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Archived

Avalanche Forecast

Nov 14th, 2021–Nov 15th, 2021
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Jasper.

Up to 50mm by Monday night expected on the Parkway.With limited early season observations and uncertainty in the amount of incoming precipitation, please approach avalanche terrain cautiously.For highway closures on 93N check 511AB.

Weather Forecast

Monday: Snow, heavy at times. Accumulation: 37 cm. Alp temperature: High -1 C; Wind southwest: 20 km/h gusting to 50 km/h; Freezing level: 2000 metres.Tuesday: Precipitation: Nil; Alp temperature: Low -16 C, High -12 C; Wind west: 15 km/h up to 50 km/h.Wednesday: Precipitation: Nil; Alp temperature: Low -18 C, High -11 C; Wind west: 10 km/h.

Snowpack Summary

Around 40 cm of new snow at Parkers ridge in the past 48 hours with moderate to strong south west winds. Alpine and tree-line areas are now gaining enough snow for avalanches, particularly in leeward alpine bowls, gullies, and around ridge lines.

Avalanche Summary

Road patrol observed one small loose dry avalanche running in a steep narrow gully, no alpine or tree line observations due to poor visibility all day. There have been reports of smaller isolated wind slabs in alpine features over the past week, but not a lot of people are out in the mountains so take that into account in your decision making.

Confidence

Forecast snowfall amounts are uncertain on Monday

Avalanche Problems

Storm Slabs

Although still likely small, these avalanches could have severe consequences in extreme terrain or shallow areas. This avalanche problem is expected to increase with 40mm of precipitation in the forecast by Monday night.

  • Use caution in lee areas. Recent wind loading have created wind slabs.
  • Be careful with wind loaded pockets while approaching and climbing ice routes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2

Loose Dry

Ice climbers should use caution for overhead hazard during periods of heavy loading.

  • Be careful of loose dry power sluffing in steep, confined or exposed terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2