Allison Pass
{{Short description|Mountain pass in British Columbia, Canada}}
{{Infobox mountain pass
| name = Allison Pass
| photo = Allison pass summit.jpg
| photo_caption = At the summit of Allison Pass
| elevation_m = 1342
| elevation_ref =
| traversed = {{jct|state=BC|BC|3|name1=Crowsnest Highway}}
| location = British Columbia, Canada
| range = Canadian Cascades
| coordinates = {{coord|49|7|N|120|52|W|type:pass_region:CA|display=inline,title}}
| topo = NTS {{Canada NTS Map Sheet}}
| map = British Columbia
| map_caption = Location in British Columbia
}}
Allison Pass (el. {{convert|1342|m|ft|disp=or|abbr=on}}) is a highway summit along the Crowsnest Highway in British Columbia, Canada.{{cite bcgnis|1058|Allison Pass}} It is the highest point on the section of highway between the cities of Hope and Princeton. It is located in the middle of Manning Park, at the divide between the Skagit & Similkameen River drainages (and thus the watersheds of the Salish Sea and the Columbia River), as well as on the boundary between the Fraser Valley and Okanagan-Similkameen Regional Districts, approximately {{convert|12|km|mi|0|abbr=on}} west of the Manning Resort and {{convert|54|km|mi|0|abbr=on}} from Hope. The Skagit River originates at the pass while the Similkameen River originates just north of it.
Cyclists and motorists alike find this stretch of road difficult because of the steep grades and high altitudes. On the way from Hope to Allison Pass, one must ascend the 7% (1 in 14) grades up to the Hope Slide before one can start up to Allison Pass, leaving many trucks waiting at the side of the road for their engines to cool down.
History
The pass was named after John Fall Allison, a rancher living in Princeton.ABC Books. [http://www.abcbookworld.com/?state=view_author&author_id=3373 ALLISON, Susan]
Climate
{{Weather box|width=auto
|metric first=y
|single line=y
|collapsed=y
|location = Allison Pass
|Jan record high C = 7.8
|Feb record high C = 12.2
|Mar record high C = 16.7
|Apr record high C = 17.2
|May record high C = 24.4
|Jun record high C = 31.1
|Jul record high C = 31.7
|Aug record high C = 31.7
|Sep record high C = 27.2
|Oct record high C = 23.3
|Nov record high C = 12.2
|Dec record high C = 8.3
|Jan record low C = -34.4
|Feb record low C = -25.6
|Mar record low C = -26.7
|Apr record low C = -16.1
|May record low C = -11.7
|Jun record low C = -5.0
|Jul record low C = -2.2
|Aug record low C = -2.2
|Sep record low C = -6.7
|Oct record low C = -17.8
|Nov record low C = -30.0
|Dec record low C = -42.8
|Jan high C = -4.1
|Feb high C = -0.9
|Mar high C = 1.9
|Apr high C = 6.4
|May high C = 10.5
|Jun high C = 14.8
|Jul high C = 19.8
|Aug high C = 19.2
|Sep high C = 15.0
|Oct high C = 8.2
|Nov high C = 0.3
|Dec high C = -2.9
| year high C =
|Jan mean C = -7.9
|Feb mean C = -5.4
|Mar mean C = -3.5
|Apr mean C = 0.8
|May mean C = 4.5
|Jun mean C = 8.3
|Jul mean C = 12.1
|Aug mean C = 11.7
|Sep mean C = 8.3
|Oct mean C = 3.0
|Nov mean C = -3.4
|Dec mean C = -6.5
| year mean C =
|Jan low C = -11.7
|Feb low C = -9.8
|Mar low C = -8.8
|Apr low C = -4.7
|May low C = -1.5
|Jun low C = 1.6
|Jul low C = 4.3
|Aug low C = 4.2
|Sep low C = 1.5
|Oct low C = -2.2
|Nov low C = -7.0
|Dec low C = -10.0
| year low C =
|precipitation colour = green
|Jan precipitation mm = 262.9
|Feb precipitation mm = 174.7
|Mar precipitation mm = 143.6
|Apr precipitation mm = 85.5
|May precipitation mm = 73.7
|Jun precipitation mm = 74.1
|Jul precipitation mm = 30.2
|Aug precipitation mm = 45.9
|Sep precipitation mm = 64.3
|Oct precipitation mm = 103.1
|Nov precipitation mm = 188.7
|Dec precipitation mm = 277.8
|year precipitation mm =
| unit precipitation days =
| Jan precipitation days = 20
| Feb precipitation days = 17
| Mar precipitation days = 17
| Apr precipitation days = 12
| May precipitation days = 13
| Jun precipitation days = 12
| Jul precipitation days = 7
| Aug precipitation days = 9
| Sep precipitation days = 12
| Oct precipitation days = 14
| Nov precipitation days = 19
| Dec precipitation days =22
| year precipitation days =
|Jan snow cm = 240.2
|Feb snow cm = 163.7
|Mar snow cm = 125.0
|Apr snow cm = 75.1
|May snow cm = 24.3
|Jun snow cm = 0.3
|Jul snow cm = 0.2
|Aug snow cm = 0.0
|Sep snow cm = 3.3
|Oct snow cm = 35.3
|Nov snow cm = 146.2
|Dec snow cm = 207.9
|year snow cm =
|source = Environment and Climate Change Canada{{cite web |url= https://climate.weather.gc.ca/doc/En56-60-2-1982.pdf
|title= CANADIAN CLIMATE NORMALS VOLUME 2 TEMPERATURE 1951–1981
|publisher=Environment and Climate Change Canada
{{cite web|url= https://climate.weather.gc.ca/doc/En56-60-3-1982.pdf
|title= CANADIAN CLIMATE NORMALS VOLUME 3 PRECIPITATION 1951–1981
|publisher=Environment and Climate Change Canada
|access-date=3 June 2024}}
}}
References
{{reflist}}
External links
- {{cite cgndb|id=JACBP|name=Allison Pass}}
- [https://www.yr.no/place/Canada/British_Columbia/Allison_Pass/hour_by_hour.html Current weather at Allison Pass]