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Archived

Avalanche Forecast

Mar 12th, 2021–Mar 13th, 2021
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

The surface snow may still become moist today. Use caution where there is potential for entrainment of moist snow

Weather Forecast

A ridge of high pressure building from the SW will keep the park dry for the next few days but the freezing level will rise each day peaking on Sunday

Friday: light SW wind, high of -3, freezing level 1700m

Saturday: light S wind, high of +1, freezing level 2200m

Saturday: light S wind gusting 45, high -1, freezing level 2400m

Snowpack Summary

Another dusting overnight Thursday brings the total to 25cm in the last few days and 50cm since Saturday. A breakable suncrust can be found down 15cm in open areas and a second crust down 25cm on all aspects to treeline, higher on solar aspects.

Avalanche Summary

Several skier triggered sz 1 windslabs have been reported from N to E lee slopes Wednesday and Thursday. In the western Selkirks a skier was fully buried in a sz 2 windslab they triggered on Thursday but were rescued with no injuries. In the Purcells a natural size 2 failed on a NE aspect at treeline.

Confidence

Due to the number and quality of field observations

Avalanche Problems

Wind Slabs

Isolated wind slabs can be found in lee areas in the alpine. The heat of the sun may make slabs more reactive and increase the size of an avalanche where moist snow can be entrained

  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
  • Use extra caution on solar slopes, or if the snow is moist or wet.

Aspects: North, North East, East, West, North West.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2