Mediterranean tropical-like cyclone#Celeno (14–17 Jan 1995)

Historically, the term tropical-like cyclone was coined in the 1980s to unofficially distinguish tropical cyclones developing outside the tropics (like in the Mediterranean Basin) from those developing inside the tropics. The term tropical-like was in no way meant to indicate a hybrid cyclone exhibiting characteristics not usually seen in "true" tropical cyclones. In their matured stages, Mediterranean tropical cyclones show no difference from other tropical storms. Mediterranean hurricanes or medicanes are therefore not different from hurricanes elsewhere.{{Cite web |title=Medicanes: Rare, 'Supercharging' Mediterranean Storms that Will Intensify, Suggest Experts |url=https://english.aawsat.com/node/4551541 |access-date=2023-10-19 |website=english.aawsat.com |language=en}}

Mediterranean tropical-like cyclones are not considered to be formally classified tropical cyclones and their region of formation is not officially monitored by any agency with meteorological tasks. However, the NOAA subsidiary Satellite Analysis Branch released information related to a medicane in November 2011 while it was active, which they dubbed as "Tropical Storm 01M", though they ceased services in the Mediterranean on 16 December 2011 for undisclosed reasons. However, in 2015, the NOAA resumed services in the Mediterranean region; by 2016, the NOAA was issuing advisories on a new tropical system, Tropical Storm 90M. Since 2005, ESTOFEX has been issuing bulletins that can include tropical-like cyclones, among others. No agency with meteorological tasks, however, is officially responsible for monitoring the formation and development of medicanes, as well as for their naming.

Despite all this, the whole Mediterranean Sea lies within the Greek area of responsibility with the Hellenic National Meteorological Service (HNMS) as the governing agency, while France's Météo-France serves as a "preparation service" for the western part of the Mediterranean as well. As the only official agency covering the whole Mediterranean Sea, HNMS publications are of particular interest for the classification of medicanes. HNMS calls the meteorological phenomenon Mediterranean tropical-like Hurricane in its annual bulletin and – by also using the respective portmanteau word medicane– makes the term medicane quasi-official. In a joint article with the Laboratory of Climatology and Atmospheric Environment of the University of Athens, the Hellenic National Meteorological Service outlines conditions to consider a cyclone over the Mediterranean Sea a Medicane:

{{blockquote

|text=The criteria applied in order to identify medicanes concern the detailed structure, the size and the lifetime of the systems using Meteosat satellite images in the infrared channel. They must have a continuous cloud cover and symmetric shape around a clearly visible cyclone eye.

|author=Hellenic National Meteorological Service

}}

In the same article, a survey of 37 medicanes revealed that medicanes could have a well-defined cyclone eye at estimated maximum sustained winds between {{convert|47|and|180|km/h|mph kn|abbr=on}}, with the lower end being exceptionally low for warm core cyclones. Medicanes can indeed develop well-defined eyes at such low maximum sustained winds of around {{convert|30|mph|km/h mph kn|order=out|abbr=on}} as could be seen for a 22 October 2015 medicane near the Albanian coast. This is much lower than the lower threshold for eye development in tropical systems in the Atlantic Ocean which seems to be close to {{convert|50|mph|km/h mph kn|order=out|abbr=on}}, well below hurricane-force winds.

Several notable and damaging medicanes are known to have occurred. In September 1969, a North African Mediterranean tropical cyclone produced flooding that killed nearly 600 individuals, left 250,000 homeless, and crippled local economies. A medicane in September 1996 that developed in the Balearic Islands region spawned six tornadoes, and inundated parts of the islands. Several medicanes have also been subject to extensive study, such as those of January 1982, January 1995, September 2006, November 2011, and November 2014. The January 1995 storm is one of the best-studied Mediterranean tropical cyclones, with its close resemblance to tropical cyclones elsewhere and availability of observations. The medicane of September 2006, meanwhile, is well-studied, due to the availability of existing observations and data.{{fact|date=February 2024}}

Given the low profile of HNMS in forecasting and classifying tropical-like systems in the Mediterranean, a proper classification system for Mediterranean tropical-like cyclones does not exist. The HNMS criterion of a cyclonic eye for considering a system a medicane is usually valid for a system at peak strength, often only hours before landfall, which is not suitable at least for forecasts and warnings.{{fact|date=February 2024}}

Unofficially, Deutscher Wetterdienst (DWD, the German meteorological service) proposed a system to forecast and classify tropical-like cyclones based on the NHC classification for the northern Atlantic Ocean. To account for the broader wind field and the larger radius of maximum winds of tropical-like systems in the Mediterranean (see the section Development and characteristics below), DWD is suggesting a lower threshold of {{convert|112|km/h|mph kn|abbr=on}} for the use of the term medicane in the Mediterranean instead of {{convert|119|km/h|mph kn|abbr=on}} as suggested by the Saffir–Simpson scale for Atlantic hurricanes. The DWD proposal and also US-based forecasts (NHC, NOAA, NRL etc.) use one-minute sustained winds while European-based forecasts use ten-minute sustained winds which makes a difference of roughly 14% in measurements. The distinction is also of direct practical use (for example for a comparison of NOAA bulletins with EUMETSAT, ESTOFEX and HNMS bulletins). To account for the difference, the DWD proposal is shown below for both one-minute and deduced ten-minute sustained winds (see tropical cyclone scales for conversions):

class="wikitable" align="center" style="margin:auto;"
bgcolor="#eeeeee" ! maximum sustained winds ! Mediterranean Tropical Depression ! Mediterranean Tropical Storm ! Medicane
1-minute average	≤ 62 km/h (≤ 17 m/s; ≤ 38 mph; ≤ 33 knots)	63–111 km/h (18–30 m/s; 39–69 mph; 34–60 knots)	≥ 112 km/h (≥ 31 m/s; ≥ 70 mph; ≥ 61 knots)
10-minute average	≤ 54 km/h (≤ 14 m/s; ≤ 33 mph; ≤ 29 knots)	56–98 km/h (15–27 m/s; 35–61 mph; 30–53 knots)	≥ 99 km/h (≥ 28 m/s; ≥ 62 mph; ≥ 54 knots)

Another proposal uses roughly the same scale but suggests to use the term medicane for tropical storm force cyclones and major medicane for hurricane force cyclones. Both proposals would fit the observation, that half of the 37 cyclones surveyed by HNMS with a clearly observable hurricane-like eye, as the major criterion for assigning the medicane status, showed maximum sustained winds between {{convert|76–110|km/h|mph kn|abbr=on}}, while another quarter of the medicanes peaked at lower wind speeds.

File:Mediterranean Cyclone 07 oct 1996 1202Z.jpg

A majority of Mediterranean tropical cyclones (tropical cyclogenesis) form over two separate regions. The first, more conducive for development than the other, encompasses an area of the western Mediterranean bordered by the Balearic Islands, southern France, and the shorelines of the islands of Corsica and Sardinia. The second identified region of development, in the Ionian Sea between Sicily and Greece and stretching south to Libya, is less favorable for tropical cyclogenesis. An additional two regions, in the Aegean and Adriatic seas, produce fewer medicanes, while activity is minimal in the Levantine region. The geographical distribution of Mediterranean tropical-like cyclones is markedly different from that of other cyclones, with the formation of regular cyclones centering on the Pyrenees and Atlas mountain ranges, the Gulf of Genoa, and in the Ionian Sea. Although meteorological factors are most advantageous in the Adriatic and Aegean seas, the closed nature of the region's geography, bordered by land, allows little time for further evolution.

The geography of mountain ranges bordering the Mediterranean are conducive for severe weather and thunderstorms, with the sloped nature of mountainous regions permitting the development of convective activity. Although the geography of the Mediterranean region, as well as its dry air, typically prevent the formation of tropical cyclones, when certain meteorological circumstances arise, difficulties influenced by the region's geography are overcome. The occurrence of tropical cyclones in the Mediterranean Sea is generally extremely rare, with an average of 1.57 forming annually and merely 99 recorded occurrences of tropical-like storms discovered between 1948 and 2011 in a modern study, with no definitive trend in activity in that period. Few medicanes form during the summer season, though activity typically rises in autumn, peaks in January, and gradually decreases from February to May. In the western Mediterranean region of development, approximately 0.75 such systems form each year, compared with 0.32 in the Ionian Sea region. However, on very rare occasions, similar tropical-like storms may also develop in the Black Sea.

Studies have evaluated that global warming can result in higher observed intensities of tropical cyclones as a result of deviations in the surface energy flux and atmospheric composition, which both heavily influence the development of medicanes as well. In tropical and subtropical areas, sea surface temperatures (SSTs) rose {{convert|0.2|C-change}} within a 50-year period, and in the North Atlantic and Northwestern Pacific tropical cyclone basins, the potential destructiveness and energy of storms nearly doubled within the same duration, evidencing a clear correlation between global warming and tropical cyclone intensities. Within a similarly recent 20-year period, SSTs in the Mediterranean Sea increased by {{convert|0.6|to|1|C-change}}, though no observable increase in medicane activity has been noted, {{as of|2013|lc=on}}. In 2006, a computer-driven atmospheric model evaluated the future frequency of Mediterranean cyclones between 2071 and 2100, projecting a decrease in autumn, winter, and spring cyclonic activity coinciding with a dramatic increase in formation near Cyprus, with both scenarios attributed to elevated temperatures as a result of global warming. In another study, researchers found that more tropical-like storms in the Mediterranean could reach Category 1 strength by the end of the 21st century, with most of the stronger storms appearing in the autumn, though the models indicated that some storms could potentially reach Category 2 intensity.{{cite news|url=https://phys.org/news/2019-02-mediterranean-hurricanes-strength-century.html|title=Mediterranean hurricanes expected to increase in strength by end of century|author=Liza Lestor|work=Phys.org|date=13 February 2019|access-date=22 April 2019|archive-date=23 April 2019|archive-url=https://web.archive.org/web/20190423000651/https://phys.org/news/2019-02-mediterranean-hurricanes-strength-century.html|url-status=live}} Other studies, however, have been inconclusive, forecasting both increases and decreases in duration, number, and intensity. Three independent studies, using different methodologies and data, evaluated that while medicane activity would likely decline with a rate depending on the climate scenario considered, a higher percentage of those that formed would be of greater strength.

File:Mediterranean tropical cyclone October 27 2005.jpg

The development of tropical or subtropical cyclones in the Mediterranean Sea can usually only occur under somewhat unusual circumstances. Low wind shear and atmospheric instability induced by incursions of cold air are often required. A majority of medicanes are also accompanied by upper-level troughs, providing energy required for intensifying atmospheric convection—thunderstorms—and heavy precipitation. The baroclinic properties of the Mediterranean region, with high temperature gradients, also provides necessary instability for the formation of tropical cyclones. Another factor, rising cool air, provides necessary moisture as well. Warm sea surface temperatures (SSTs) are mostly unnecessary, however, as most medicanes' energy are derived from warmer air temperatures. When these favorable circumstances coincide, the genesis of warm-core Mediterranean tropical cyclones, often from within existing cut-off cold-core lows, is possible in a conducive environment for formation.

Factors required for the formation of medicanes are somewhat different from that normally expected of tropical cyclones; known to emerge over regions with sea surface temperatures (SSTs) below {{convert|26|C|F}}, Mediterranean tropical cyclones often require incursions of colder air to induce atmospheric instability. A majority of medicanes develop above regions of the Mediterranean with SSTs of {{convert|15|to|26|C|F}}, with the upper bound only found in the southernmost reaches of the sea. Despite the low sea surface temperatures, the instability incited by cold atmospheric air within a baroclinic zone—regions with high differences in temperature and pressure—permits the formation of medicanes, in contrast with tropical areas lacking high baroclinity, where raised SSTs are needed. While significant deviations in air temperature have been noted around the time of Mediterranean tropical cyclones' formation, few anomalies in sea surface temperature coincide with their development, indicating that the formation of medicanes is primarily controlled by higher air temperatures, not by anomalous SSTs. Similar to tropical cyclones, minimal wind shear—difference in wind speed and direction over a region—as well as abundant moisture and vorticity encourages the genesis of tropical cyclone-like systems in the Mediterranean Sea.

File:Mediterranean Hurricane TLC dic 2005.jpg on 15 December 2005]]

Due to the confined character of the Mediterranean and the limited capability of heat fluxes — in the case of medicanes, air-sea heat transfer — tropical cyclones with a diameter larger than {{convert|300|km|mi|abbr=on}} cannot exist within the Mediterranean. Despite being a relatively baroclinic area with high temperature gradients, the primary energy source utilized by Mediterranean tropical cyclones is derived from underlying heat sources generated by the presence of convection—thunderstorm activity—in a humid environment, similar to tropical cyclones elsewhere outside the Mediterranean Sea. In comparison with other tropical cyclone basins, the Mediterranean Sea generally presents a difficult environment for development; although the potential energy necessary for development is not abnormally large, its atmosphere is characterized by its lack of moisture, impeding potential formation. The full development of a medicane often necessitates the formation of a large-scale baroclinic disturbance, transitioning late in its life cycle into a tropical cyclone-like system, nearly always under the influence of a deep, cut-off, cold-core low within the middle-to-upper troposphere, frequently resulting from abnormalities in a wide-spreading Rossby wave—massive meanders of upper-atmospheric winds.

File:Mediterranean tropical cyclone January 28 2009.jpg

The development of medicanes often results from the vertical shift of air in the troposphere as well, resulting in a decrease in its temperature coinciding with an increase in relative humidity, creating an environment more conducive for tropical cyclone formation. This, in turn, leads to in an increase in potential energy, producing heat-induced air-sea instability. Moist air prevents the occurrence of convective downdrafts—the vertically downward movement of air—which often hinder the inception of tropical cyclones, and in such a scenario, wind shear remains minimal; overall, cold-core cut-off lows serve well for the later formation of compact surface flux-influenced warm-core lows such as medicanes. The regular genesis of cold-core upper-level lows and the infrequency of Mediterranean tropical cyclones, however, indicate that additional unusual circumstances are involved the emergence of the latter. Elevated sea surface temperatures, contrasting with cold atmospheric air, encourage atmospheric instability, especially within the troposphere.

In general, most medicanes maintain a radius of {{convert|70|to|200|km|mi|-1|abbr=on}}, last between 12 hours and 5 days, travel between {{convert|700|and|3000|km|mi|abbr=on}}, develop an eye for less than 72 hours, and feature wind speeds of up to {{convert|144|km/h|mph kn|abbr=on}}; in addition, a majority are characterized on satellite imagery as asymmetric systems with a distinct round eye encircled by atmospheric convection. Weak rotation, similar to that in most tropical cyclones, is usually noted in a medicane's early stages, increasing with intensity; medicanes, however, often have less time to intensify, remaining weaker than most North Atlantic hurricanes and only persisting for the duration of a few days. While the entire lifetime of a cyclone may encompass several days, most will only retain tropical characteristics for less than 24 hours. Circumstances sometimes permit the formation of smaller-scale medicanes, although the required conditions differ even from those needed by other medicanes. The development of abnormally small tropical cyclones in the Mediterranean usually requires upper-level atmospheric cyclones inducing cyclogenesis in the lower atmosphere, leading to the formation of warm-core lows, encouraged by favorable moisture, heat, and other environmental circumstances.

Mediterranean cyclones have been compared with polar lows—cyclonic storms which typically develop in the far regions of the Northern and Southern Hemispheres—for their similarly small size and heat-related instability; however, while medicanes nearly always feature warm-core lows, polar lows are primarily cold-core. The prolonged life of medicanes and similarity to polar lows is caused primarily by origins as synoptic-scale surface lows and heat-related instability. Heavy precipitation and convection within a developing Mediterranean tropical cyclone are usually incited by the approach of an upper-level trough—an elongated area of low air pressures—bringing downstream cold air, encircling an existing low-pressure system. After this occurs, however, a considerable reduction in rainfall rates occurs despite further organization, coinciding with a decrease in previously high lightning activity as well. Although troughs will often accompany medicanes along their track, separation eventually occurs, usually in the later part of a Mediterranean tropical cyclone's life cycle. At the same time, moist air, saturated and cooled while rising into the atmosphere, then encounters the medicane, permitting further development and evolution into a tropical cyclone. Many of these characteristics are also evident in polar lows, except for the warm core characteristic.

File:Mediterranean tropical cyclone 1969-09-25 0935Z.jpg

An unusually severe Mediterranean tropical cyclone developed on 23 September 1969 southeast of Malta, producing severe flooding. Steep pressure and temperature gradients above the Atlas mountain range were evident on 19 September, a result of cool sea air attempting to penetrate inland; south of the mountains, a lee depression—a low-pressure area in a mountainous region—developed. Under the influence of mountainous terrain, the low initially meandered northeastward. Following the entry of cool sea air, however, it recurved to the southeast before transitioning into a Saharan depression associated with a distinct cold front by 22 September. Along the front's path, desert air moved northward while cold air drifted in the opposite direction, and in northern Libya, warm arid air clashed with the cooler levant of the Mediterranean. The organization of the disturbance improved slightly further before emerging into the Mediterranean Sea on 23 September, upon which the system experienced immediate cyclogenesis,{{cite journal |last1=Winstanley |first1=D. |title=The North African Flood Disaster, September 1969 |journal=Weather |date=September 1970 |volume=25 |issue=9 |pages=390–403 |doi=10.1002/j.1477-8696.1970.tb04128.x|bibcode=1970Wthr...25..390W }} rapidly intensifying while southeast of Malta as a cold-core cut-off low, and acquiring tropical characteristics. In western Africa, meanwhile, several disturbances converged toward Mauritania and Algeria, while the medicane recurved southwestward back toward the coast, losing its closed circulation and later dissipating.

The cyclone produced severe flooding throughout regions of northern Africa. Malta received upward of {{convert|123|mm|in|abbr=on}} of rainfall on 23 September, Sfax measured {{convert|45|mm|in|abbr=on}} on 24 September, Tizi Ouzou collected {{convert|55|mm|in|abbr=on}} on 25 September, Gafsa received {{convert|79|mm|in|abbr=on}} and Constantine measured {{convert|46|mm|in|abbr=on}} on 26 September, Cap Bengut collected {{convert|43|mm|in|abbr=on}} on 27 September, and Biskra received {{convert|122|mm|in|abbr=on}} on 28 September. In Malta, a 20000-ton tanker struck a reef and split in two, while in Gafsa, Tunisia, the cyclone flooded phosphate mines, leaving over 25,000 miners unemployed and costing the government over £2 million per week. Thousands of camels and snakes, drowned by flood waters, were swept out to sea, and massive Roman bridges, which withstood all floods since the fall of the Roman Empire, collapsed. In all, the floods in Tunisia and Algeria killed almost 600 individuals, left 250,000 homeless, and severely damaged regional economies. Due to communication problems, however, flood relief funds and television appeals were not set up until nearly a month later.

File:1-26-1982-NOAA-07-1232PM.jpg

The unusual Mediterranean tropical storm of January 1982, dubbed Leucosia, was first detected in waters north of Libya. The storm likely reached the Atlas mountain range as a low-pressure area by 23 January 1982, reinforced by an elongated, slowly-drifting trough above the Iberian Peninsula. Eventually, a closed circulation center developed by 1310 UTC, over parts of the Mediterranean with sea surface temperatures (SSTs) of approximately {{convert|16|C|F}} and air temperature of {{convert|12|C|F}}. A hook-shaped cloud developed within the system shortly thereafter, rotating as it elongated into a {{convert|150|km|mi|abbr=on}}-long comma-shaped apparatus. After looping around Sicily, it drifted eastward between the island and Peloponnese, recurving on its track again, exhibiting clearly curved spiral banding before shrinking slightly. The cyclone reached its peak intensity at 1800 UTC on the following day, maintaining an atmospheric pressure of {{convert|992|mbar|inHg|lk=on|abbr=on}}, and was succeeded by a period of gradual weakening, with the system's pressure eventually rising to {{convert|1009|mbar|inHg|abbr=on}}. The system slightly reintensified, however, for a six-hour period on 26 January. Ship reports indicated winds of {{convert|93|km/h|mph kn|abbr=on}} were present in the cyclone at the time, tropical storm-force winds on the Saffir–Simpson hurricane wind scale, likely near the eyewall of the cyclone, which features the highest winds in a tropical cyclone.

The Global Weather Center's Cyclone Weather Center of the United States Air Force (USAF) initiated "Mediterranean Cyclone Advisories" on the cyclone at six-hour intervals starting at 1800 UTC on 27 January, until 0600 UTC on the following day. Convection was most intense in the eastern sector of the cyclone as it drifted east-northeastward. On infrared satellite imagery, the eye itself was {{convert|58.5|km|mi|abbr=on}} in diameter, contracting to just {{convert|28|km|mi}} one day prior to making landfall. The cyclone passed by Malta, Italy, and Greece before dissipating several days later, in the extreme eastern Mediterranean. Observations related to the cyclone, however, were inadequate, and although the system maintained numerous tropical characteristics, it is possible it was merely a compact but powerful extratropical cyclone exhibiting a clear eye, spiral banding, towering cumulonimbi, and high surface winds along the eyewall.

On 27 September 1983, a medicane was observed at sea between Tunisia and Sicily, looping around Sardinia and Corsica, coming ashore twice on the islands, before making landfall at Tunis early on 2 October and dissipating. The development of the system was not encouraged by baroclinic instability; rather, convection was incited by abnormally high sea surface temperatures (SSTs) at the time of its formation. It also featured a definitive eye, tall cumulonimbus clouds, intense sustained winds, and a warm core. For most of its duration, it maintained a diameter of {{convert|200|to|300|km|mi|abbr=on}}, though it shrank just before landfall on Ajaccio to a diameter of {{convert|100|km|mi|abbr=on}}.

File:Celeno 1995-01-16 1400Z.png

Among numerous documented medicanes, the cyclone of January 1995, which was dubbed Celeno, is generally considered to be the best-documented instance in the 20th century. The storm emerged from the Libyan coast and moved toward the Ionian shoreline of Greece on 13 January as a compact low-pressure area. The medicane maintained winds reaching up to {{convert|108|km/h|mph kn|abbr=on}} as it traversed the Ionian Sea, while the German research ship Meteor recorded winds of {{convert|135|km/h|mph kn|abbr=on}}. Upon the low's approach near Greece, it began to envelop an area of atmospheric convection; meanwhile, in the middle troposphere, a trough extended from Russia to the Mediterranean, bringing with it extremely cold temperatures. Two low-pressure areas were present along the path of the trough, with one situated above Ukraine and the other above the central Mediterranean, likely associated with a low-level cyclone over western Greece. Upon weakening and dissipation on 14 January, a second low, the system which would evolve into the Mediterranean tropical cyclone, developed in its place on 15 January.

At the time of formation, high clouds indicated the presence of intense convection, and the cyclone featured an axisymmetric cloud structure, with a distinct, cloud-free eye and rainbands spiraling around the disturbance as a whole. Soon thereafter, the parent low separated from the medicane entirely and continued eastward, meandering toward the Aegean Sea and Turkey. Initially remaining stationary between Greece and Sicily with a minimum atmospheric pressure of {{convert|1002|mbar|inHg|lk=on|abbr=on}}, the newly formed system began to drift southwest-to-south in the following days, influenced by northeasterly flow incited by the initial low, now far to the east, and a high-pressure area above central and eastern Europe. The system's atmospheric pressure increased throughout 15 January due to the fact it was embedded within a large-scale environment, with its rising pressure due to the general prevalence of higher air pressures throughout the region, and was not a sign of weakening.

Initial wind speeds within the young medicane were generally low, with sustained winds of merely {{convert|28|to|46|km/h|mph kn|abbr=on}}, with the highest recorded value associated with the disturbance being {{convert|63|km/h|mph|abbr=on}} at 0000 UTC on 16 January, slightly below the threshold for tropical storm on the Saffir–Simpson hurricane wind scale. Its structure now consisted of a distinct eye encircled by counterclockwise-rotating cumulonimbi with cloud top temperatures colder than {{convert|-50|C|F}}, evidencing deep convection and a regular feature observed in most tropical cyclones. At 1200 UTC on 16 January, a ship recorded winds blowing east-southeast of about {{convert|50|kn|km/h}} south-southwest about {{convert|50|km|mi|abbr=on}} north-northeast of the cyclone's center. Intense convection continued to follow the entire path of the system as it traversed the Mediterranean, and the cyclone made landfall in northern Libya at approximately 1800 UTC on 17 January, rapidly weakening after coming ashore. As it moved inland, a minimum atmospheric pressure of {{convert|1012|mbar|inHg|abbr=on}} was recorded, accompanied by wind speeds of {{convert|93|km/h|mph kn|abbr=on}} as it slowed down after passing through the Gulf of Sidra. Although the system retained its strong convection for several more hours, the cyclone's cloud tops began to warm, evidencing lower clouds, before losing tropical characteristics entirely on 17 January. Offshore ship reports recorded that the medicane produced intense winds, copious rainfall, and abnormally warm temperatures.

Three notable medicanes developed in 1996. The first, in mid-September 1996, was a typical Mediterranean tropical cyclone that developed in the Balearic Islands region. At the time of the cyclone's formation, a powerful Atlantic cold front and a warm front associated with a large-scale low, producing northeasterly winds over the Iberian peninsula, extended eastward into the Mediterranean, while abundant moisture gathered in the lower troposphere over the Balearic channel. On the morning of 12 September, a disturbance developed off of Valencia, Spain, dropping heavy rainfall on the coast even without coming ashore. An eye developed shortly thereafter as the system rapidly traversed across Majorca and Sardinia in its eastward trek. It made landfall upon the coast of southern Italy on the evening of 13 September with a minimum atmospheric pressure of {{convert|990|mbar|inHg|abbr=on}}, dissipating shortly after coming ashore, with a diameter of about {{convert|150|km|mi|abbr=on}}.

At Valencia and other regions of eastern Spain, the storm generated heavy precipitation, while six tornadoes touched down over the Balearic Islands. While approaching the coast of the Balearic Islands, the warm-core low induced a pressure drop of {{convert|11|mbar|inHg|abbr=on}} at Palma, Majorca in advance of the tropical cyclone's landfall. Medicanes as small as the one that formed in September 1996 are atypical, and often require circumstances different even from those required for regular Mediterranean tropical cyclone formation. Warm low-level advection–transfer of heat through air or sea–caused by a large-scale low over the western Mediterranean was a primary factor in the rise of strong convection. The presence of a mid- to upper-level cut-off cold-core low, a method of formation typical to medicanes, was also key to the development of intense thunderstorms within the cyclone. In addition, interaction between a northeastward-drifting trough, the medicane, and the large-scale also permitted the formation of tornadoes within thunderstorms generated by the cyclone after making landfall.

File:Mediterranean Cyclone 07 oct 1996 0603Z.jpg

The second of the three recorded Mediterranean tropical cyclones in 1996 formed between Sicily and Tunisia on 4 October, making landfall on both Sicily and southern Italy. The medicane generated major flooding in Sicily. In Calabria, wind gusts of up to {{convert|108|km/h|mph kn|abbr=on}} were reported in addition to severe inundation.

File:Mediterranean hurricane 1996.jpg

The third major Mediterranean tropical cyclone of that year formed north of Algeria, and strengthened while sweeping between the Balearic Islands and Sardinia, with an eye-like feature prominent on satellite. The storm was unofficially named Cornelia. The eye of the storm was distorted and disappeared after transiting over southern Sardinia throughout the evening of 8 October, with the system weakening as a whole. On the morning of October 9, a smaller eye emerged as the system passed over the Tyrrhenian Sea, gradually strengthening, with reports {{convert|100|km|mi|abbr=on}} from the storm's center reporting winds of {{convert|90|km/h|mph kn|abbr=on}}. Extreme damage was reported in the Aeolian Islands after the tropical cyclone passed north of Sicily, though the system dissipated while turning southward over Calabria. Overall, the lowest estimated atmospheric pressure in the third medicane was {{convert|998|mbar|inHg|abbr=on}}. Both October systems featured distinctive spiral bands, intense convection, high sustained winds, and abundant precipitation.

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File:Mediterranean tropical cyclone September 26 2006.jpg

A short-lived medicane, named Querida by the Free University of Berlin, developed near the end of September 2006, along the coast of Italy. The origins of the medicane can be traced to the alpine Atlas mountain range on the evening of 25 September, likely forming as a normal lee cyclone. At 0600 UTC on 26 September, European Centre for Medium-Range Weather Forecasts (ECMWF) model analyses indicated the existence of two low-pressure areas along the shoreline of Italy, one on the west coast, sweeping eastward across the Tyrrhenian Sea, while the other, slightly more intense, low was located over the Ionian Sea. As the latter low approached the Strait of Sicily, it met an eastward-moving convection-producing cold front, resulting in significant intensification, while the system simultaneously reduced in size. It then achieved a minimum atmospheric pressure of approximately {{convert|986|mbar|inHg|lk=on|abbr=on}} after transiting north-northeastward across the {{convert|40|km|mi|abbr=on}}-wide Salentine peninsula in the course of roughly 30 minutes at 0915 UTC the same day.

Wind gusts surpassing {{convert|144|km/h|mph kn|abbr=on}} were recorded as it passed over Salento due to a steep pressure gradient associated with it, confirmed by regional radar observations denoting the presence of a clear eye. The high winds inflicted moderate damages throughout the peninsula, though specific damage is unknown. Around 1000 UTC, both radar and satellite recorded the system's entry into the Adriatic Sea and its gradual northwestward curve back toward the Italian coast. By 1700 UTC, the cyclone made landfall in northern Apulia while maintaining its intensity, with a minimum atmospheric pressure at {{convert|988|mbar|inHg|abbr=on}}. The cyclone weakened while drifting further inland over the Italian mainland, eventually dissipating as it curved west-southwestward. A later study in 2008 evaluated that the cyclone possessed numerous characteristics seen in tropical cyclones elsewhere, with a spiral appearance, eye-like apparatus, rapid atmospheric pressure decreases in advance of landfall, and intense sustained winds, concentrated near the storm's eyewall; the apparent eye-like structure in the cyclone, however, was ill-defined. Since then, the medicane has been the subject of significant study as a result of the availability of scientific observations and reports related to the cyclone. In particular, the sensitivity of this cyclone to sea-surface temperatures, initial conditions, the model, and the parameterization schemes used in the simulations were analyzed. The relevance of different instability indices for the diagnosis and the prediction of these events were also studied.

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{{Main|Tropical Storm Rolf}}

File:Rolf 2011-11-08 1030Z.jpg

In November 2011, the first officially designated Mediterranean tropical cyclone by the National Oceanic and Atmospheric Administration (NOAA) formed, christened as Tropical Storm 01M by the Satellite Analysis Branch, and given the name Rolf by the Free University of Berlin (FU Berlin), despite the fact that no agency is officially responsible for monitoring tropical cyclone activity in the Mediterranean. On 4 November 2011, a frontal system associated with another low-pressure area monitored by FU Berlin, designated Quinn, spawned a second low-pressure system inland near Marseille, which was subsequently named Rolf by the university. An upper-level trough on the European mainland stalled as it approached the Pyrenees, before approaching and interacting with the low known as Rolf. Heavy rainfall consequently fell over regions of southern France and northwestern Italy, resulting in widespread landslides and flooding. On 5 November, Rolf slowed while stationed above the Massif Central, maintaining a pressure of {{convert|1000|mbar|inHg|lk=on|abbr=on}}. A stationary front, stationed between Madrid and Lisbon, approached Rolf the same day, with the cold front later encountering and becoming associated with Rolf, which would continue for a couple of days.

On 6 November, the cyclone drifted toward the Mediterranean from the southern shoreline of France, with the storm's frontal structure shrinking to {{convert|150|km|mi|abbr=on}} in length. Slightly weakening, Rolf neared the Balearic Islands on 7 November, associating with two fronts producing heavy rain throughout Europe, before separating entirely and transitioning into a cut-off low. On the same day, the NOAA began monitoring the system, designating it as 01M, marking the first time that the agency officially monitored a Medicane. A distinct eye-like feature developed while spiral banding and intense convection became evident. At its highest, the Dvorak technique classified the system as T3.0. Convection then gradually decreased, and a misalignment of the mid- and upper-level centers was noted. The cyclone made landfall on 9 November near Hyères in France. The system continued to rapidly weaken on 9 November, before advisories on the system were discontinued later that day, and FU Berlin followed suit by 10 November, removing the name Rolf from its weather maps and declaring the storm's dissipation. The deep warm core of this cyclone persisted for a longer time compared to most of the other documented tropical-like cyclones in the Mediterranean.

At peak intensity, the storm's maximum sustained wind speed reached {{convert|45|kn|km/h mph kn|abbr=on|order=out}}, with a minimum pressure of {{convert|991|mbar|inHg|abbr=on}}. During a nine-day period, from 1–9 November, Storm Quinn and Rolf dropped prolific amounts of rainfall across southwestern Europe, the vast majority of which came from Rolf, with a maximum total of {{convert|605|mm|in|abbr=on}} of rain recorded in southern France.{{cite web|url=https://meteo06.fr/tempete-rolf-novembre-2011/|title=Tempête Rolf novembre 2011|trans-title=Storm Rolf November 2011|language=fr|website=Meteo06.fr|author=Anthony Brunain|publisher=Meteo 06|date=11 November 2011|access-date=26 December 2020|archive-date=29 November 2020|archive-url=https://web.archive.org/web/20201129080423/https://meteo06.fr/tempete-rolf-novembre-2011/|url-status=live}} The storm caused at least $1.25 billion (2011 USD) in damages in Italy and France.{{cite web|title=November 2011 Monthly Cat Recap|url=http://thoughtleadership.aonbenfield.com/documents/201112_if_monthly_cat_recap_november.pdf|work=Aon Benfield|date=6 December 2011|access-date=23 September 2017|page=5|archive-date=2 December 2018|archive-url=https://web.archive.org/web/20181202193349/http://thoughtleadership.aonbenfield.com/documents/201112_if_monthly_cat_recap_november.pdf|url-status=dead}} The sum of fatalities totaled 12 people from Italy and France.

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{{Main|Cyclone Qendresa}}

File:Qendresa 2014-11-07 1215Z (cropped).jpg

On 6 November 2014, the low-level circulation centre of Qëndresa formed near Kerkennah Islands. As the system was moving north-northeastwards and combining with an upper-level low from Tunisia early on 7 November, the system occluded quickly and intensified dramatically with an eye-like feature, thanks to favourable conditions. Qëndresa directly hit Malta when it had lost its fronts with a more well-defined eye, with ten-minute sustained winds at {{convert|110.9|km/h|mph kn|abbr=on}} and the gust at {{convert|153.7|km/h|mph kn|abbr=on}}. The central pressure was presumed to be {{convert|978|hPa|inHg|lk=on|abbr=on}}. Interacting with Sicily, the cyclone turned northeastwards and started to make an anticlockwise loop. On 8 November, Qëndresa crossed Syracuse in the morning and then significantly weakened. Turning southeastwards then moving eastwards, Qëndresa moved over Crete, before dissipating over the island on 11 November.

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File:Iona 2016-10-31 0045Z.jpg

Early on 28 October 2016, {{cvt|35|mph|km/h|order=flip}} an extratropical cyclone began to develop to the south of Calabria, in the Ionian sea. The system quickly intensified, attaining wind speeds of {{cvt|50|mph|km/h|order=flip}} as it slowly moved to the west, causing high waves and minor damage to cars near the Maltese city of Valletta, weakening the following day and beginning to move eastwards. However, later that day, it began to re-intensify and underwent a tropical transition. At 12:00 UTC on 30 October, the system showed 10-minute sustained winds of {{cvt|56|kn|km/h mph kn|order=out}}. It became a tropical storm on 31 October. After passing over Crete, the storm began to quickly weaken, with the storm degenerating into an extratropical low on 1 November. Tropical Storm 90M was also nicknamed "Medicane Trixi" by some media outlets in Europe during its duration.

No fatalities or rainfall statistics have been reported for this system that was over open waters for most of the time.{{citation needed|date=September 2020}}

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{{main|Cyclone Numa}}

File:Numa 2017-11-18 0929Z.jpg

On 11 November 2017, the remnant of Tropical Storm Rina from the Atlantic contributed to the formation of a new extratropical cyclone, west of the British Isles, which later absorbed Rina on the next day. On 12 November, the new storm was named Numa by the Free University of Berlin. On 14 November 2017, Extratropical Cyclone Numa emerged into the Adriatic Sea. On the following day, while crossing Italy, Numa began to undergo a subtropical transition, though the system was still extratropical by 16 November. The storm began to impact Greece as a strong storm on 16 November. Some computer models forecast that Numa could transition into a warm-core subtropical or tropical cyclone within the next few days. On 17 November, Numa completely lost its frontal system. On the afternoon of the same day, Météo France tweeted that Numa had attained the status of a subtropical Mediterranean depression. {{citation needed span|During the next several hours, Numa continued to strengthen, before reaching its peak intensity on 18 November, as a strong subtropical storm.|date=December 2020}} According to ESTOFEX, Numa showed numerous {{convert|45|kn|km/h mph kn|adj=on|order=out}} flags of 10-minute sustained winds in satellite data. Between 18:00 UTC on 17 November and 5:00 UTC on 18 November, Numa acquired evident tropical characteristics, and began to display a hurricane-like structure. ESTOFEX again reported {{convert|45|kn|km/h mph kn|abbr=on|order=out}}. Later on the same day, Numa made landfall in Greece with a station at Kefalonia reporting peak winds of {{convert|60|kn|km/h mph kn|abbr=on|order=out}} at {{convert|998|hPa|inHg|abbr=on}}. The cyclone rapidly weakened into a low-pressure area, before emerging into the Aegean Sea on 19 November. On 20 November, Numa was absorbed into another extratropical storm approaching from the north.

Numa hit Greece at a time when the soil was already heavily soaked from other storm systems that did arrive before Numa. The area was forecast to receive up to more than {{convert|400|mm|in|abbr=on}} of additional rains in an 48 hours period starting with 16 November. No rainfall forecasts or measurements are known for the following days while Numa was still battering Greece. Numa resulted in 21 reported deaths. At least 1,500 homes were flooded, and residents had to evacuate their homes. The storm caused an estimated US$100 million in damages in Europe and was the deadliest weather event Greece had experienced since 1977.

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{{main|Cyclone Zorbas}}

File:Zorbas 2018-09-29 0912Z.jpg

A first outlook about the possible development of a shallow warm-core cyclone in the Mediterranean was issued by ESTOFEX on 25 September 2018, and a second extended outlook was issued on 26 September 2018. On 27 September 2018, an extratropical storm developed in the eastern Mediterranean Sea. Water temperatures of around {{convert|27|C|F}} supported the storm's transition into a hybrid cyclone, with a warm thermal core in the center. The storm moved northeastward toward Greece, gradually intensifying and developing characteristics of a tropical cyclone. On September 29, the storm made landfall at peak intensity in the Peloponnese, west of Kalamata, where a minimum central pressure of {{convert|989.3|mbar|inHg|abbr=on}} was reported. ESTOFEX reported on Zorbas as "Mediterranean Cyclone 2018M02", with the same pressure of {{convert|989|mbar|inHg|abbr=on}} at Kalamata, further estimating the minimum central pressure of the cyclone to be {{convert|987|mbar|inHg|abbr=on}}, with one-minute maximum sustained winds of {{convert|120|km/h|mph kn|abbr=on}} and a Dvorak number of T4.0, which all translate into marginal Category 1 hurricane characteristics for the cyclone.

It is unknown who named the system Zorbas, but the name is officially recognized for a medicane by the Deutscher Wetterdienst. Early on 1 October, Zorbas emerged into the Aegean Sea, while accelerating northeastward. On 2 October, Zorbas moved over northwestern Turkey and dissipated. A cold wake was observed in the Mediterranean Sea, with sea surface temperatures dropping {{convert|3-4|C-change|F-change|0|abbr=on}} along the track of Zorbas due to strong upwelling.

During its formative stages, the storm caused flash flooding in Tunisia and Libya, with around {{convert|200|mm|in|abbr=on}} of rainfall observed. The floods killed five people in Tunisia, while also damaging homes, roads, and fields. The Tunisian government pledged financial assistance to residents whose homes were damaged. In advance of the storm's landfall in Greece, the Hellenic National Meteorological Office issued a severe warning. Several flights were canceled, and schools were closed. The offshore islands of Strofades and Rhodes reported gale-force winds during the storm's passage. A private weather station in Voutsaras measured wind gusts of {{convert|65|mph|km/h mph kn|abbr=on|order=out}}. The storm spawned a waterspout that moved onshore. Gale-force winds in Athens knocked down trees and power lines. A fallen tree destroyed the roof of a school in western Athens. Dozens of roads were closed due to flooding. In Ioannina, the storm damaged the minaret on the top of the Aslan Pasha Mosque, which dates to 1614. From 29 to 30 September, Zorbas produced flash flooding in Greece and parts of western Turkey, with the storm dropping as much as {{convert|200|mm|in|abbr=on}} in Greece and spawning multiple waterspouts. Three people were reporting missing in Greece after the flash floods; one person was found dead, but the other two individuals remained missing, as of 3 October. Zorbas was estimated to have caused millions of dollars (2018 USD) in damages.{{cite web|url=http://thoughtleadership.aonbenfield.com/Documents/20181009-ab-analytics-if-sept-global-recap.pdf|title=Global Catastrophe Recap - September 2018|work=Aon Benfield|date=9 October 2018|access-date=28 December 2020|page=6|archive-date=9 December 2019|archive-url=https://web.archive.org/web/20191209235952/http://thoughtleadership.aonbenfield.com/Documents/20181009-ab-analytics-if-sept-global-recap.pdf|url-status=dead}}

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{{main|Cyclone Ianos}}

File:Ianos 2020-09-17 1140Z.jpg

On 14 September 2020, a low-pressure area began to develop over the Gulf of Sidra, quickly developing in the coming hours while slowly moving northwest with a wind speed of around {{convert|50|km/h|mph kn|abbr=on}}. By 15 September, it had intensified to {{convert|65|km/h|mph kn|abbr=on}} with a minimum pressure of 1010 hPa, with further development predicted over the coming days. The cyclone had strong potential to become tropical over the next several days due to warm sea temperatures of {{convert|27|to|28|C|F}} in the region. Weather models predicted that it would likely hit the west coast of Greece on 17 or 18 September. Ianos gradually intensified over the Mediterranean Sea, acquiring an eye-like feature. Ianos made landfall on Greece at peak intensity on 03:00 UTC on 18 September, with winds peaking near {{convert|160|km/h|mph kn|abbr=on}} and a minimum central pressure estimated at {{convert|984.3|hPa|inHg|abbr=on}}, equivalent to a minimal Category 2 hurricane.{{cite journal |author1=Lagouvardos, K.|author2=Karagiannidis, A.|author3=Dafis, S.|author4=Kalimeris, A.|author5=Kotroni, V.|title=Ianos - A hurricane in the Mediterranean |journal=Bulletin of the American Meteorological Society |volume=102|issue=9|pages=E1621–E1636|publisher=American Meteorological Society|date=28 September 2021|doi=10.1175/BAMS-D-20-0274.1|s2cid=244187015|doi-access=free}}{{cite report |title=Weekly Weather and Crop Bulletin |url=https://downloads.usda.library.cornell.edu/usda-esmis/files/cj82k728n/r781x571v/7h14bc86h/wwcb3820.pdf#page=28 |volume=107 |issue=34 |website=usda.library.cornell.edu |publisher=United States Department of Agriculture |page=28 |date=22 September 2020 |access-date=24 September 2020 |archive-date=25 September 2020 |archive-url=https://web.archive.org/web/20200925201855/https://downloads.usda.library.cornell.edu/usda-esmis/files/cj82k728n/r781x571v/7h14bc86h/wwcb3820.pdf#page=28 |url-status=live }}

Greece assigned the system the name "Ianos" ({{lang|el|Ιανός}}),{{cite web|last1=Καραγιαννίδης|first1=Α.|last2=Λαγουβάρδος|first2=Κ.|date=16 September 2020|title=Οι πρώτες δορυφορικές εκτιμήσεις της ολικής βροχόπτωσης του ΙΑΝΟΥ|trans-title=The first satellite estimates of the total rainfall of IANOS|url=http://www.meteo.gr/?entryID=1481|access-date=24 September 2020|website=Meteo.gr|language=el|archive-date=3 March 2021|archive-url=https://web.archive.org/web/20210303233137/https://www.meteo.gr/?entryID=1481|url-status=live}} sometimes anglicized to "Janus",{{cite news |last1=Kelly |first1=Maura |title=Storm Janus develops into medicane, will wallop Greece with flooding rain, strong winds |url=https://www.accuweather.com/en/severe-weather/storm-janus-develops-into-medicane-will-wallop-greece-with-flooding-rain-strong-winds/813740 |work=AccuWeather |date=16 September 2020 |access-date=16 September 2020 |archive-date=9 November 2020 |archive-url=https://web.archive.org/web/20201109063600/https://www.accuweather.com/en/severe-weather/storm-janus-develops-into-medicane-will-wallop-western-greece-with-flooding-rain-strong-winds/813740 |url-status=live }} while the German weather service used the name "Udine";{{cite news |title=Medicane UDINE über dem Ionischen Meer |trans-title=Medicane UDINE over the Ionian Sea |url=https://www.dwd.de/DE/wetter/thema_des_tages/2020/9/16.html |access-date=16 September 2020 |work=www.dwd.de |date=16 September 2020 |language=de |archive-date=9 November 2020 |archive-url=https://web.archive.org/web/20201109060111/https://www.dwd.de/DE/wetter/thema_des_tages/2020/9/16.html |url-status=live }} the Turkish used "Tulpar", and the Italians "Cassilda".{{cite tweet|author=Helga van Leur|user=helgavanleur|title=Hellup! Nut van eenduidige namen voor stormen is bij deze wel bewezen: een ontwikkelende storm in de Middellandse Zee wordt door de Grieken #Ianos genoemd, door de Italianen #Cassilda en Turken houden het op #Tulpar Handig! Not. NB Bij wind >93 km/h, dan is het een #medicane 🌀|url=https://www.twitter.com/helgavanleur/status/1306235595979710464|number=1306235595979710464|date=16 September 2020|access-date=16 October 2021|language=nl}} As Ianos passed to the south of Italy on 16 September, it produced heavy rain across the southern part of the country and in Sicily. As much as {{convert|35|mm|in|abbr=on}} of rain was reported in Reggio Calabria, more than the city's normal monthly rainfall.

Ianos left four dead people and one missing, in addition to strong tides in Ionian islands such as Kefalonia, Zakynthos, Ithaca and Lefkada, and {{convert|120|km/h|mph kn|abbr=on}} winds at Karditsa which brought down trees and power lines, and caused landslides.{{cite web |url=https://www.bbc.com/news/world-europe-54219180 |title=Cyclone Ianos: Two dead as 'medicane' sweeps across Greece |website=BBC |date=19 September 2020 |access-date=19 September 2020 |archive-date=9 November 2020 |archive-url=https://web.archive.org/web/20201109055747/https://www.bbc.com/news/world-europe-54219180 |url-status=live }}{{cite web |url=https://www.euronews.com/2020/09/17/cyclone-ianos-greek-authorities-issue-warning-for-rare-extreme-weather-phenomenon |title=Cyclone Ianos: Two dead and one missing after 'rare extreme weather phenomenon' hits Greece |website=euronews.com |date=19 September 2020 |access-date=19 September 2020 |archive-date=9 November 2020 |archive-url=https://web.archive.org/web/20201109055842/https://www.euronews.com/2020/09/17/cyclone-ianos-greek-authorities-issue-warning-for-rare-extreme-weather-phenomenon |url-status=live }}

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{{main|Cyclone Apollo}}

File:Apollo 2021-10-29 1309Z.jpg

Around 22 October 2021, an area of organized thunderstorms formed near the Balearic Islands, with the disturbance becoming more organized and developing an area of low pressure around 24 October.{{cite web|url=https://www.wetterzentrale.de/maps/archive/2021/dwd/DWD_1_2021102400_45.png|title=Europe Weather Map on 2021-10-24|publisher=Free University of Berlin|date=24 October 2021|access-date=28 October 2021|archive-date=28 October 2021|archive-url=https://web.archive.org/web/20211028174038/https://www.wetterzentrale.de/maps/archive/2021/dwd/DWD_1_2021102400_45.png|url-status=live}} The low started to form a low level center the next day and moved around the Tyrrhenian Sea, and around 28 October, the low became better organized, prompting forecast offices in Europe to name it.

The most commonly used name for the cyclone is Apollo, which was used by the Free University of Berlin.{{cite web|url=http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211028.gif|title=Europe Weather Analysis on 2021-10-28|publisher=Free University of Berlin|date=28 October 2021|access-date=28 October 2021|archive-date=28 October 2021|archive-url=https://web.archive.org/web/20211028174036/http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211028.gif|url-status=dead}} On the same day, the agency Meteo of the National Observatory of Athens in Greece named it Nearchus, after the voyager of the same name.{{cite news|url=https://www.meteo.gr/article_view.cfm?entryID=1982|title=Ο Μεσογειακός Κυκλώνας "Νέαρχος" απειλεί τη Νότια Ιταλία και τη Μάλτα|trans-title=The Mediterranean Cyclone "Nearchus" threatens Southern Italy and Malta|language=Greek|author1=S. Dafis|author2=K. Lagouvardos|work=Meteo.gr|date=28 October 2021|access-date=28 October 2021|archive-url=https://web.archive.org/web/20211028183132/https://www.meteo.gr/article_view.cfm?entryID=1982|archive-date=28 October 2021|url-status=live}}

Heavy rain from the cyclone and its precursor caused heavy rainfall and flooding in Tunisia, Algeria, Southern Italy, and Malta, killing seven people in total.{{cite report|url=http://thoughtleadership.aon.com/Documents/20211011-analytics-if-october-global-recap.pdf|title=Global Catastrophe Recap October 2021|pages=7–8|publisher=Aon|date=11 November 2021|access-date=22 November 2021|archive-date=11 November 2021|archive-url=https://web.archive.org/web/20211111171608/http://thoughtleadership.aon.com/Documents/20211011-analytics-if-october-global-recap.pdf|url-status=live}}{{cite news|url=https://floodlist.com/africa/algeria-tunisia-italy-medicane-floods-october-2021|title=Algeria, Tunisia and Italy – Floods Leave 5 Dead, 2 Missing|author=|work=FloodList|date=27 October 2021|access-date=28 October 2021|archive-url=https://web.archive.org/web/20211027033227/https://floodlist.com/africa/algeria-tunisia-italy-medicane-floods-october-2021|archive-date=27 October 2021|url-status=live}}{{cite news|url=https://www.accuweather.com/en/hurricane/deadly-medicane-walloping-southern-italy-with-flooding-rain-strong-winds/1038330|title=Deadly medicane walloping southern Italy with flooding rain, strong winds|author=Mary Gilbert|work=AccuWeather|date=26 October 2021|access-date=26 October 2021|archive-date=26 October 2021|archive-url=https://web.archive.org/web/20211026232214/https://www.accuweather.com/en/hurricane/deadly-medicane-walloping-southern-italy-with-flooding-rain-strong-winds/1038330|url-status=live}}{{cite web|url=https://www.bbc.com/news/world-europe-59048809|title=Catania: Two dead as rare storm floods streets of Sicilian city|author=|publisher=BBC News|date=26 October 2021|access-date=26 October 2021|archive-date=26 October 2021|archive-url=https://web.archive.org/web/20211026160138/https://www.bbc.com/news/world-europe-59048809|url-status=live}} The storm caused over US$245 million (€219 million) in damages.

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{{Main|Storm Blas}}

File:Blas 2021-11-14 1201Z.jpg

On 5 November, the Spanish Meteorological Agency (AEMET) started tracking a low near the Balearic Islands and named it Blas.{{Cite tweet | author = AEMET | author-link = State Meteorological Agency | user = AEMET_Esp | number = 1456618907666636805 | date = 5 November 2021 | title = La Borrasca Blas | language = es | access- date = 7 November 2021 }} An orange alert was issued for these islands, for coastal impacts and rain. The north of Catalonia was declared an Orange Zone, as strong winds blew inland from the Spanish Navarre and Aragon. Météo-France also issued a yellow alert for Aude and Pyrénées-Orientales for wind, as well as Corsica for rain. As the system stalled between Sardinia and the Balearic Islands on 8 November, AEMET predicted a strengthening trend for the next two days and maintained its alerts.{{Cite tweet | author = Agusti Jansa Clar | user = AJANSACLAR | number = 1457646145782550528 | date = 8 November 2021 | title = Tomorrow, Sunday, at migdia, es preveu el center de la baixa Blas knocking the Balears, altra vegada. | language = es | access-date = 8 November 2021 }} At 00:00 UTC on 11 November, the system came very close to the Balearic Islands again.{{cite web | language = de | url = http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211111.gif | title = Europe Weather Map on 2021-11-11 | publisher = Free University of Berlin | date = 11 November 2021 | access-date = 11 November 2021 | archive-date = 11 November 2021 | archive-url = https://web.archive.org/web/20211111111324/http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211111.gif | url-status = dead }}{{cite web |last1=Blašković |first1=Teo |title=Medistorm "Helios" (Blas) forms over the island of Palma, Spain |url=https://watchers.news/2021/11/11/medistorm-helios-blas-palma-spain-november-2021/ |website=The Watchers |access-date=13 November 2021 |date=11 November 2021 |archive-date=12 November 2021 |archive-url=https://web.archive.org/web/20211112133238/https://watchers.news/2021/11/11/medistorm-helios-blas-palma-spain-november-2021/ |url-status=live }} On 13 November, the storm developed a spiral structure similar to those of tropical cyclones,{{cite web|url=https://www.cazatormentas.net/algunas-lluvias-en-canarias-y-el-pseudo-medicane-blas/|title=Algunas lluvias en Canarias y el pseudo medicane Blas|trans-title=Some rains in the Canary Islands and the pseudo medicane Blas|language=es|author=|publisher=Caztormentas|date=13 November 2021|accessdate=24 November 2021|archive-date=24 November 2021|archive-url=https://web.archive.org/web/20211124040258/https://www.cazatormentas.net/algunas-lluvias-en-canarias-y-el-pseudo-medicane-blas/|url-status=live}} while shedding its frontal structure. After striking the islands again, the storm then slowly weakened while drifting back southeastward.{{cite web|language=de|url=http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211113.gif|title=Europe Weather Map on 2021-11-13|publisher=Free University of Berlin|date=13 November 2021|access-date=14 November 2021|archive-date=13 November 2021|archive-url=https://web.archive.org/web/20211113131617/http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211113.gif|url-status=dead}} On 14 November, the cyclone turned northward, moving over Sardinia and Corsica, before curving back southwestward on 15 November and moving over Sardinia again, while restrengthening in the process.{{cite web|language=de|url=http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211114.gif|title=Europe Weather Map on 2021-11-14|publisher=Free University of Berlin|date=14 November 2021|access-date=15 November 2021|archive-date=14 November 2021|archive-url=https://web.archive.org/web/20211114125928/http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211114.gif|url-status=dead}}{{cite web |language=de |url=http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211115.gif |title=Europe Weather Map on 2021-11-15 |publisher=Free University of Berlin |date=15 November 2021 |access-date=16 November 2021 |archive-date=16 November 2021 |archive-url=https://web.archive.org/web/20211116175445/http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211115.gif |url-status=dead }} On 16 November, Blas turned eastward once again, passing just south of Sardinia and moving towards Italy, before dissipating over the Tyrrhenian Sea on 18 November.{{cite web |language=de |url=http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211116.gif |title=Europe Weather Map on 2021-11-16 |publisher=Free University of Berlin |date=16 November 2021 |access-date=16 November 2021 |archive-date=24 November 2021 |archive-url=https://web.archive.org/web/20211124221312/http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211116.gif |url-status=dead }}{{cite web |language=de |url=http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211117.gif |title=Europe Weather Map on 2021-11-17 |publisher=Free University of Berlin |date=17 November 2021 |access-date=24 November 2021 |archive-date=24 November 2021 |archive-url=https://web.archive.org/web/20211124221310/http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211117.gif |url-status=dead }}{{cite web |language=de |url=http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211118.gif |title=Europe Weather Map on 2021-11-18 |publisher=Free University of Berlin |date=18 November 2021 |access-date=24 November 2021 |archive-date=24 November 2021 |archive-url=https://web.archive.org/web/20211124221313/http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211118.gif |url-status=live }}{{cite web |language=de |url=http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211119.gif |title=Europe Weather Map on 2021-11-19 |publisher=Free University of Berlin |date=19 November 2021 |access-date=24 November 2021 |archive-date=24 November 2021 |archive-url=https://web.archive.org/web/20211124221311/http://www.met.fu-berlin.de/de/wetter/maps/Analyse_20211119.gif |url-status=dead }}

On 6 November, gusts of {{convert|75|km/h|mph kn|0|abbr=on}} were recorded at Es Mercadal and {{convert|95|km/h|mph kn|0|abbr=on}} at the lighthouse of Capdepera in the Balearic Islands where waves of {{convert|8|m|ft|0|abbr=on}} hit the coast.{{cite news|title=Storm 'Blas' battered Puerto Andratx|url=https://www.majorcadailybulletin.com/weather/weather/2021/11/08/92629/mallorca-weather-storm-blas-damage.html|language=en|author=Majorca daily bulettin|date=8 November 2021|access-date=9 November 2021|archive-date=8 November 2021|archive-url=https://web.archive.org/web/20211108170819/https://www.majorcadailybulletin.com/weather/weather/2021/11/08/92629/mallorca-weather-storm-blas-damage.html|url-status=live}}{{cite news | language= fr | author1= | title= La tempête tropicale Blas quitte Minorque isolée par la mer | trans-title= Tropical storm Blas leaves Menorca isolated by the sea | work= Marseille News | date= 6 November 2021 | url= https://www.marseillenews.net/la-tempete-tropicale-blas-quitte-minorque-isolee-par-la-mer.html | access-date= 7 November 2021 | archive-date= 8 November 2021 | archive-url= https://web.archive.org/web/20211108010739/https://www.marseillenews.net/la-tempete-tropicale-blas-quitte-minorque-isolee-par-la-mer.html | url-status= live }}{{cite news | language = fr | author = Florent Zéphir | title = Un trombe d'eau déchire le ciel au large de Melilla, dans le sillage de la tempête Blas - vidéo | trans-title = A waterspout tears the sky at sea de Melilla, in the wake of storm Blas - video | website = Alvinet | publisher = Sputnik | date = 7 November 2021 | url = https://www.alvinet.com/similaires/un-trombe-d-eau-dechire-le-ciel-au-large-de-melilla-dans-le-sillage-de-la-tempete-blas-video/60527336 | access-date = 7 November 2021 | archive-date = 11 November 2021 | archive-url = https://web.archive.org/web/20211111202412/https://www.alvinet.com/similaires/un-trombe-d-eau-dechire-le-ciel-au-large-de-melilla-dans-le-sillage-de-la-tempete-blas-video/60527336 | url-status = live }}{{Cite tweet | author = AEMET Baleares | author-link=State Meteorological Agency | user=AEMET_Baleares | number=1456886843715342336 | date= 6 November 2021| title = Rachas máximas de Viento | language = es | access-date = 7 November 2021}} Menorca was cut off from the world after the closure of the ports of Mahón and Ciutadella.{{cite news|url=https://spainsnews.com/menorca-is-cut-off-by-sea-due-to-the-tropical-storm-blas/|title=Menorca is cut off by sea due to the tropical storm Blas|author=|work=Spain's News|date=13 November 2021|accessdate=24 November 2021|archive-date=24 November 2021|archive-url=https://web.archive.org/web/20211124040312/https://spainsnews.com/menorca-is-cut-off-by-sea-due-to-the-tropical-storm-blas/|url-status=dead}} On 9 and 10 November, Blas brought high winds and heavy rain again to the Balearic Islands, causing at least 36 incidents, mostly flooding, landslides and blackouts. A crew member had to be rescued after his sailboat's mast broke, leaving the boat adrift {{convert|80|km|mi|abbr=on|0}} west of Sóller.{{cite news | language = en | title = Storm 'Blas' causing havoc in Mallorca | work = Mallorca Daily Bulletin | date = 10 November 2021 | url = https://www.majorcadailybulletin.com/weather/weather/2021/11/10/92741/mallorca-weather-storm-blas-2.html | access-date = 10 November 2021 | archive-date = 11 November 2021 | archive-url = https://web.archive.org/web/20211111041656/https://www.majorcadailybulletin.com/weather/weather/2021/11/10/92741/mallorca-weather-storm-blas-2.html | url-status = live }} On 6 November, a waterspout was reported in Melilla, a Spanish enclave on the coast of Morocco. In France, gusts of {{convert|140|km/h|mph kn|0|abbr=on}} were recorded on 7 November at Cap Béar, as well as {{convert|111|km/h|mph kn|0|abbr=on}} in Leucate and {{convert|100|km/h|mph kn|0|abbr=on}} in Lézignan-Corbières.{{cite web | language = fr | author = Marc Hay | title = Dépression Blas en Méditerranée: une menace pour la France ? | trans-title = Depression Blas in the Mediterranean: a threat for France? | website = www.tameteo.com | series = Actualités | date = 8 November 2021 | url = https://www.tameteo.com/actualites/previsions/depression-blas-en-mediterranee-une-menace-pour-la-france-tendance-meteo-france.html | access-date = 8 November 2021 | archive-date = 8 November 2021 | archive-url = https://web.archive.org/web/20211108072031/https://www.tameteo.com/actualites/previsions/depression-blas-en-mediterranee-une-menace-pour-la-france-tendance-meteo-france.html | url-status = live }} The storm caused severe weather on the Algerian coast, with exceptional rainfall. On 9 November, a building collapsed in Algiers, following torrential rains on the city, causing the deaths of three people.{{cite news | language = fr | title = Collapse of a building in Bologhine: one injured and three missing | work = Algeria Presse Service | date = 9 November 2021 | url = https://www.aps.dz/societe/130300-intemperies-un-blesse-et-trois-disparus-suite-al-effondrement-d-un-immeuble-a-bologhine | access-date = 10 November 2021 | archive-date = 11 November 2021 | archive-url = https://web.archive.org/web/20211111210934/https://www.aps.dz/societe/130300-intemperies-un-blesse-et-trois-disparus-suite-al-effondrement-d-un-immeuble-a-bologhine | url-status = live }} On 11 November, the heavy rain falling on Algiers caused another landslide to strike houses in the Raïs Hamidou neighborhood, causing the deaths of three other people.{{cite web | language = fr | title = Bad weather: 3 dead after a landslide in Algiers | url = https://www.tsa-algerie.com/intemperies-3-morts-apres-un-glissement-de-terrain-a-alger/ | website = TSA | date = 11 November 2021 | access-date = 11 November 2021 | archive-date = 11 November 2021 | archive-url = https://web.archive.org/web/20211111095504/https://www.tsa-algerie.com/intemperies-3-morts-apres-un-glissement-de-terrain-a-alger/ | url-status = live }} From 8 to 11 November, convective bands associated with the storm caused 3 deaths in Sicily,{{cite news |language=fr |url=https://www.lindependant.fr/2021/11/11/apres-la-catalogne-la-tempete-blas-va-t-elle-se-transformer-en-ouragan-mediterraneen-et-balayer-les-iles-baleares-9921636.php |title=Après la Catalogne, la tempête Blas va-t-elle se transformer en ouragan méditerranéen et balayer les îles Baléares? |trans-title=After Catalonia, will storm Blas turn into a Mediterranean hurricane and sweep across the Balearic Islands? |journal=L'Indépendant |date=11 November 2021 |access-date=11 November 2021 |archive-date=12 November 2021 |archive-url=https://web.archive.org/web/20211112000311/https://www.lindependant.fr/2021/11/11/apres-la-catalogne-la-tempete-blas-va-t-elle-se-transformer-en-ouragan-mediterraneen-et-balayer-les-iles-baleares-9921636.php |url-status=live }} bringing the total death toll to nine people. Damage from the storm has not yet been assessed.

{{Main|Storm Daniel}}

File:Daniel 2023-09-09 1200Z.jpg

Storm Daniel was named by the Hellenic National Meteorological Service on 4 September and was expected to bring heavy rainfall and heavy winds in Greece, especially in Greece's Thessaly region. On 5 September, the city of Volos was flooded extensively. The village of Zagora recorded 754 mm of rain in 24 hours, a record for Greece.{{cite web |last1=Dafis |first1=S. |author2=G. Kyros |author3=K. Lagouvardos |title=meteo.gr: Κακοκαιρία Daniel: Καταρρίφθηκε το ρεκόρ ημερήσιου ύψους βροχής στη χώρα μας |url=https://meteo.gr/article_view.cfm?entryID=2913 |website=meteo.gr |access-date=5 September 2023 |language=EL |archive-date=5 September 2023 |archive-url=https://web.archive.org/web/20230905191009/https://meteo.gr/article_view.cfm?entryID=2913 |url-status=live }} The total rainfall reached 1,096 mm.{{cite web |last1=Vougioukas |first1=Pg. |author2=I. Koletsis |author3=G. Kyros |author4=K. Lagouvardos |title=meteo.gr: Αποτίμηση της κακοκαιρίας DANIEL, μέρος 2ο: Πολύ μεγαλύτερα ύψη βροχόπτωσης στη Θεσσαλία σε σχέση με το Μεσογειακό Κυκλώνα Ιανό του 2020 |url=https://meteo.gr/article_view.cfm?entryID=2924 |website=meteo.gr - Προγνώσεις καιρού για όλη την Ελλάδα |access-date=11 September 2023 |language=EL |archive-date=26 September 2023 |archive-url=https://web.archive.org/web/20230926112429/https://meteo.gr/article_view.cfm?entryID=2924 |url-status=live }} As of 10 September, sixteen people are confirmed to have died in Greece, seven people are confirmed dead in Turkey, and four people are confirmed to have lost their lives in Bulgaria.{{cite web |last1=Miller |first1=Brandon |author2=Robert Shackelford |author3=Chris Liakos |author4=Louise McLoughlin |author5=Hande Atay Alam |title=At least 14 killed as fierce storms and severe flooding lash southern Europe |url=https://edition.cnn.com/2023/09/06/europe/greece-europe-extreme-weather-climate-intl/index.html |website=CNN |access-date=11 September 2023 |language=en |date=6 September 2023 |archive-date=8 September 2023 |archive-url=https://web.archive.org/web/20230908125508/https://edition.cnn.com/2023/09/06/europe/greece-europe-extreme-weather-climate-intl/index.html |url-status=live }}{{cite news |title=Streets turn to rivers in Bulgaria |work=BBC News |url=https://www.bbc.co.uk/news/av/world-europe-66728709 |access-date=11 September 2023 |archive-date=8 September 2023 |archive-url=https://web.archive.org/web/20230908001216/https://www.bbc.co.uk/news/av/world-europe-66728709 |url-status=live }}{{cite web |title=Bulgaria: Two People Died in the floods in Tsarevo, Two more are Missing - Novinite.com - Sofia News Agency |url=https://www.novinite.com/articles/221393/Bulgaria%3A+Two+People+Died+in+the+floods+in+Tsarevo%2C+Two+more+are+Missing |website=www.novinite.com |access-date=11 September 2023 |archive-date=6 September 2023 |archive-url=https://web.archive.org/web/20230906124822/https://www.novinite.com/articles/221393/Bulgaria%3A+Two+People+Died+in+the+floods+in+Tsarevo%2C+Two+more+are+Missing |url-status=live }} Extensive flooding occurred in the plain of Thessaly, in Palamas, Karditsa and the city of Larisa and hundreds civilians were rescued.{{cite web |last1=Presse |first1=Agence-France |title=Hundreds of people rescued from flooded villages in Greece |url=https://www.theguardian.com/world/2023/sep/09/hundreds-of-people-rescued-from-flooded-villages-in-greece |website=The Guardian |access-date=11 September 2023 |date=9 September 2023}} The flood water covered a region of about 720 square kilometers.{{cite web |last1=Petrou |first1=John |first2=Alec |last2=Moustris |title=meteo.gr: Πρωτοφανείς πλημμύρες στον κάμπο της Θεσσαλίας - Δορυφορική απεικόνιση |url=https://meteo.gr/article_view.cfm?entryID=2922 |website=meteo.gr - Προγνώσεις καιρού για όλη την Ελλάδα |access-date=11 September 2023 |language=EL |archive-date=12 September 2023 |archive-url=https://web.archive.org/web/20230912201604/https://www.meteo.gr/article_view.cfm?entryID=2922 |url-status=live }} In the Halkidiki region, several seaside villages such as Ierissos experienced damage due to the heavy wind. In the seaside village of Toroni in Halkidiki a canoeing woman got swept away by the wind but was later found. The torrential rainfall was a result of a cut-off low. Early on 9 September, the system showed signs of subtropical transition. Later on that same day, it developed a warm core while an ASCAT pass recorded sustained winds of 45 knots before making landfall near Benghazi, Libya. In Libya, the storm caused flooding in Marj, and the failure of two dams{{cite web | url=https://www.cbsnews.com/news/libya-flooding-deaths-bodies-found-derna-25-percent-city-disappeared/ | title=Libya flooding death toll tops 5,300, thousands still missing as bodies are found in Derna - CBS News | website=CBS News | date=12 September 2023 }} in Derna, and the Jabal al Akhdar district, as well as Benghazi, Susa, and Misrata. The resultant flooding and heavy rain caused the deaths of at least 5,900 people in the country, making it, by a very wide margin, the deadliest Mediterranean tropical-like cyclone on record, prompting a state of emergency to be declared by Libyan authorities.{{cite news |url=https://news.sky.com/story/libya-floods-number-of-deaths-in-derna-could-reach-20-000-mayor-says-12960801 |access-date=14 September 2023 |date=14 September 2023 |work=Sky News |title=Libya floods: Number of deaths in Derna could reach 20,000, mayor says |archive-date=14 September 2023 |archive-url=https://web.archive.org/web/20230914105531/https://news.sky.com/story/libya-floods-number-of-deaths-in-derna-could-reach-20-000-mayor-says-12960801 |url-status=live }}

File:Hannelore 2023-01-21 1800Z.jpg

Numerous other Mediterranean tropical-like cyclones have occurred, but few have been as well-documented as the cyclones in 1969, 1982, 1983, 1995, 1996, 2006, 2011, 2014, 2017, 2018, 2020, 2021, and 2023. These less-known system and their dates are given below.

A study in 2000 revealed five notable and well-developed medicanes. A follow-up study in 2013 revealed several additional storms with their formation days and also additional information on medicanes. A third study, conducted in 2007, revealed additional storms with their formation days. A fourth study from 2013 presented several other cyclones and their days of development. A survey made by EUMETSAT resulted in many more cyclones.

• September 1947
• September 1973
• 18–20 August 1976
• 26 March 1983
• 7 April 1984,
• 29–30 December 1984
• 14–18 December 1985
• January 1991, 5 December 1991
• 21–25 October 1994
• 10–13 December 1996
• 22–27 September 1997, 30–31 October 1997, 5–8 December 1997
• 25–27 January 1998
• 19–21 March 1999, 13 September 1999
• 10 September 2000, 9 October 2000
• 27–28 May 2003, 16–19 September 2003, 27–28 September 2003, 8 October 2003
• 19–21 September 2004, 3–5 November 2004
• August 2005, 15–16 September 2005, 22–23 October 2005, 26–28 October 2005, 14–16 December 2005
• 9 August 2006
• 19–23 March 2007 16–18 October 2007, 26 October 2007
• June 2008, August 2008, September 2008, 4 December 2008
• January 2009, May 2009, twice in September 2009, October 2009
• 12–14 October 2010, 2–4 November 2010
• Twice in February 2012, 13–15 April 2012.
• "Scott", October 2019{{cite news |url=https://edition.cnn.com/2019/10/25/weather/medicane-mediterranean-storm-egypt-israel-wxc/index.html |title=A rare hurricane-like storm in the Mediterranean threatens Egypt and Israel |first1=Sara |last1=Tonks |first2=Brandon |last2=Miller |date=25 October 2019 |access-date=1 November 2019 |publisher=CNN |website=edition.cnn.com |archive-date=27 October 2019 |archive-url=https://web.archive.org/web/20191027121014/https://edition.cnn.com/2019/10/25/weather/medicane-mediterranean-storm-egypt-israel-wxc/index.html |url-status=live }}{{cite news |title=MODIS Web: Image of theDay |url=https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2019-10-26 |access-date=16 October 2020 |work=modis.gsfc.nasa.gov |agency=NASA |date=26 October 2019 |archive-date=4 December 2021 |archive-url=https://web.archive.org/web/20211204033821/https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2019-10-26 |url-status=live }}
• "Trudy" ("Detlef"), November 2019{{cite web |last1=Korosec |first1=Marco |title=An impressive medicane #DETLEF in the western Mediterranean, making landfall in northern Algeria, Nov 11th |url=https://www.severe-weather.eu/recent-events/medicane-western-mediterranean-algeria-landfall-mk/ |website=Severe Weather Europe |access-date=19 December 2020 |date=11 November 2019 |archive-date=26 November 2020 |archive-url=https://web.archive.org/web/20201126203550/https://www.severe-weather.eu/recent-events/medicane-western-mediterranean-algeria-landfall-mk/ |url-status=live }}
• "Masinissa", November 2020{{cite web|url=https://cimss.ssec.wisc.edu/satellite-blog/archives/date/2020/11/22|title=Medicane makes landfall in Tunisia|author=Scott Bachmeier|publisher=CIMSS Satellite Blog|date=22 November 2020|access-date=18 November 2021|archive-url=https://web.archive.org/web/20210118141821/https://cimss.ssec.wisc.edu/satellite-blog/archives/date/2020/11/22|archive-date=18 January 2021|url-status=live}}https://zivipotty.hu/2020_masinissa.pdf {{Webarchive|url=https://web.archive.org/web/20240409121412/https://zivipotty.hu/2020_masinissa.pdf |date=9 April 2024 }} {{Bare URL PDF|date=August 2024}}
• 03M/"Elaina" ("Andira"), December 2020{{cite web|url=https://www.meteoweb.eu/2020/12/mediterraneo-orientale-medicane-elaina-libano/1522702/|title=Meteo, nel Mediterraneo orientale si è formato un Medicane: "Elaina" minaccia il Libano con piogge torrenziali e forti venti [MAPPE]|trans-title=Weather, a Medicane has formed in the eastern Mediterranean: "Elaina" threatens Lebanon with torrential rains and strong winds [MAPS]|language=it|author=Beatrice Raso|publisher=MeteoWeb|date=16 December 2020|access-date=18 November 2021|archive-url=https://web.archive.org/web/20210117040852/https://www.meteoweb.eu/2020/12/mediterraneo-orientale-medicane-elaina-libano/1522702/|archive-date=17 January 2021|url-status=live}}{{cite news|url=https://www.arabiaweather.com/ar/content/العاصفة-المتوسطية-إلينا-تتشكل-قبالة-سواحل-سوريا-وتتحرك-جنوباً-نحو-لبنان|title=العاصفة المتوسطية إلاينا تتشكل قبالة سواحل سوريا وتتحرك جنوباً نحو لبنان|trans-title=Mediterranean Storm Elaina forms off the coast of Syria and moves south towards Lebanon|language=ar|author=Wael Hakim|work=ArabiaWeather|date=16 December 2020|access-date=18 November 2021|archive-url=https://web.archive.org/web/20211118090313/https://www.arabiaweather.com/ar/content/%D8%A7%D9%84%D8%B9%D8%A7%D8%B5%D9%81%D8%A9-%D8%A7%D9%84%D9%85%D8%AA%D9%88%D8%B3%D8%B7%D9%8A%D8%A9-%D8%A5%D9%84%D9%8A%D9%86%D8%A7-%D8%AA%D8%AA%D8%B4%D9%83%D9%84-%D9%82%D8%A8%D8%A7%D9%84%D8%A9-%D8%B3%D9%88%D8%A7%D8%AD%D9%84-%D8%B3%D9%88%D8%B1%D9%8A%D8%A7-%D9%88%D8%AA%D8%AA%D8%AD%D8%B1%D9%83-%D8%AC%D9%86%D9%88%D8%A8%D8%A7%D9%8B-%D9%86%D8%AD%D9%88-%D9%84%D8%A8%D9%86%D8%A7%D9%86|archive-date=18 November 2021|url-status=live}}{{Cite web|title=Severe Medistorm "Elaina" forms near Cyprus, landfall expected in Lebanon on December 17|url=https://watchers.news/2020/12/16/severe-medistorm-elaina-landfall-forecast-lebanon-december-2020/|author=Teo Blašković|publisher=The Watchers|date=16 December 2020|access-date=18 November 2021|archive-url=https://web.archive.org/web/20210126044252/https://watchers.news/2020/12/16/severe-medistorm-elaina-landfall-forecast-lebanon-december-2020/|archive-date=26 January 2021|url-status=live}}
• "Hannelore", January 2023{{cite web|url=https://www.eumetsat.int/medicane-northern-adriatic|title=Medicane in Northern Adriatic|publisher=EUMETSAT|date=30 January 2023|access-date=10 February 2023|archive-date=10 February 2023|archive-url=https://web.archive.org/web/20230210073532/https://www.eumetsat.int/medicane-northern-adriatic|url-status=dead}}

There have been 100 recognized tropical-like cyclones in the Mediterranean Sea between 1947 and 2021 from the databases of the Laboratory of Climatology and Atmospheric Environment, University of Athens, and METEOSAT. By steady accrual of reported and recognized occurrences of tropical-like cyclones (medicanes), the number count reached at least 89 by 15 November 2021. Unlike most northern hemisphere cyclone seasons, Mediterranean tropical-like cyclone activity peaks between the months of September and January.

{{center|List of storms, by month}}

{{col-begin}}

{{col-2}}

class="wikitable" align="center" style="margin:auto;"
bgcolor="#CCCCCC" ! Month ! Number of recorded storms in the Mediterranean Sea
January	10
February	5
March	5
April	2
May	2
June	1
July	1
August	5
September	19
October	18
November	10
December	13
Total	89

{{col-2}}

DateFormat=yyyy

ImageSize= width:350 height:auto barincrement:35

Period = from:0 till:21

TimeAxis = orientation:horizontal

PlotArea = right:10 left:5 bottom:50 top:5

Colors=

id:blue value:rgb(0.38,0.73,1)

id:minorline value:rgb(0.9,0.9,0.9)

id:line value:rgb(0.5,0.5,0.5)

PlotData=

width:15 textcolor:black shift:(5,-5) anchor:from fontsize:M

bar:Jan from:0 till:10 color:blue text:"January"

bar:Feb from:0 till:5 color:blue text:"February"

bar:Mar from:0 till:5 color:blue text:"March"

bar:Apr from:0 till:2 color:blue text:"April"

bar:May from:0 till:2 color:blue text:"May"

bar:Jun from:0 till:1 color:blue text:"June"

bar:Jul from:0 till:1 color:blue text:"July"

bar:Aug from:0 till:5 color:blue text:"August"

bar:Sep from:0 till:19 color:blue text:"September"

bar:Oct from:0 till:18 color:blue text:"October"

bar:Nov from:0 till:10 color:blue text:"November"

bar:Dec from:0 till:13 color:blue text:"December"

ScaleMajor = gridcolor:line unit:year increment:3 start:0

ScaleMinor = gridcolor:minorline unit:year increment:1 start:0

TextData =

fontsize:M

textcolor:black

pos:(50,25) # tabs:(100-left)

text:"Number of storms in the Mediterranean Sea"

{{col-end}}

The numbers do not necessarily mean that all occurrences of medicanes have been fetched in particular before the end of the 1980s. With the development (and constant improvement) of satellite-based observations, the number count of clearly identified medicanes increased from the 1980s onward. There might be an additional impact from climate change in the frequency of the observed medicanes, but this is not deducible from the data.{{Citation needed|date=September 2020}}

{{center|List of storms, by decade}}

{{col-begin}}

{{col-2}}

class="wikitable" align="center" style="margin:auto;"
bgcolor="#CCCCCC" ! Decade ! Number of recorded storms in the Mediterranean Sea
1940s	2
1950s	0
1960s	1
1970s	2
1980s	7
1990s	15
2000s	27
2010s	20
2020s	8

{{col-2}}

DateFormat=yyyy

ImageSize= width:350 height:auto barincrement:35

Period = from:0 till:30

TimeAxis = orientation:horizontal

PlotArea = right:10 left:5 bottom:50 top:5

Colors=

id:blue value:rgb(0.38,0.73,1)

id:minorline value:rgb(0.9,0.9,0.9)

id:line value:rgb(0.5,0.5,0.5)

PlotData=

width:15 textcolor:black shift:(5,-5) anchor:from fontsize:M

bar:1940s from:0 till:2 color:blue text:"1940s"

bar:1950s from:0 till:0 color:blue text:"1950s"

bar:1960s from:0 till:1 color:blue text:"1960s"

bar:1970s from:0 till:2 color:blue text:"1970s"

bar:1980s from:0 till:7 color:blue text:"1980s"

bar:1990s from:0 till:15 color:blue text:"1990s"

bar:2000s from:0 till:27 color:blue text:"2000s"

bar:2010s from:0 till:20 color:blue text:"2010s"

bar:2020s from:0 till:8 color:blue text:"2020s"

ScaleMajor = gridcolor:line unit:year increment:3 start:0

ScaleMinor = gridcolor:minorline unit:year increment:1 start:0

TextData =

fontsize:M

textcolor:black

pos:(50,25) # tabs:(100-left)

text:"Number of storms in the Mediterranean Sea"

{{col-end}}

The following is a list of all medicanes that caused deaths.

class="wikitable" align="center" style="margin-left: auto; margin-right: auto; border: none;"
bgcolor="#CCCCCC" ! Name ! Year ! Number of deaths
Daniel	2023	≥ 5,951
Unnamed	1969	≥ 600
Numa	2017	22
Rolf	2011	12
Blas	2021	9
Apollo	2021	7
Zorbas	2018	≥ 6 (2 missing)
Ianos	2020	4 (1 missing)
Qendresa	2014	3

{{See also|Tropical cyclogenesis#Unusual areas of formation}}

File:Black Sea cyclone 2005-09-27.png

On a number of occasions, tropical-like storms similar to the tropical-like cyclones observed in the Mediterranean have formed in the Black Sea, including storms on 21 March 2002, 7–11 August 2002, and 25–29 September 2005. The 25–29 September 2005 cyclone is particularly well-documented and investigated.

{{Portal|Tropical cyclones|Europe}}

• 1996 Lake Huron cyclone
• 2006 Central Pacific cyclone
• European windstorm (fully extratropical)
• South Atlantic tropical cyclone
• Subtropical Cyclone Katie
• Subtropical Cyclone Lexi
• Subtropical Storm 96C
• Tropical cyclogenesis
• Tropical cyclone basins
• Tropical cyclone effects in Europe
• Unusual areas of tropical cyclone formation

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{{refend}}

{{Commons category|Tropical cyclones in the Mediterranean Sea}}

• [http://www.ssd.noaa.gov/PS/TROP/Basin_Med.html Mediterranean Tropical Products Page – Satellite Services Division – Office of Satellite Data Processing and Distribution]
• [http://www.ssd.noaa.gov/imagery/neatl.html Northeast Atlantic and Mediterranean Imagery] – NOAA
• {{cite journal |last = Miglietta |first = Mario Marcello |author2 = R. Rotunno |title = Development mechanisms for Mediterranean tropical-like cyclones (medicanes) |journal = Q. J. R. Meteorol. Soc. |volume = 145|issue = 721|pages = 1444–1460 |date = 2019 |doi = 10.1002/qj.3503 |bibcode = 2019QJRMS.145.1444M |s2cid = 128138854 |url = https://zenodo.org/record/3407432 }}

{{Mediterranean tropical-like cyclones}}

{{Cyclones}}

{{DEFAULTSORT:Mediterranean tropical cyclone}}

Category:Climate change and hurricanes

Category:Natural disasters

Category:Tropical cyclone meteorology

Category:Types of cyclone