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Archived

Avalanche Forecast

Apr 11th, 2022–Apr 12th, 2022
Alpine
1: Low
The avalanche danger rating in the alpine will be low
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
1: Low
The avalanche danger rating in the alpine will be low
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
1: Low
The avalanche danger rating in the alpine will be low
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

Regions: Jasper.

We are experiencing all freeze, no melt weather pattern. Ridgetop windslabs are spotty and on a variety of hard surfaces yet are bonding well. Avalanches could still occur in extreme terrain thus investigate and evaluate features of concern.

Weather Forecast

Select a specific area at Spot Wx for localized weather forecast conditions. Monday night will be clear with flurries, -20C, and light East winds. Tuesday will bring clouds and some sun, no new snow, -15C, and light Easterly winds. Wednesday will be similar and expect a repeat with Thursday but with more clouds.

Snowpack Summary

Up to 5cm of spotty flurries Sunday landing on a previous settled 10-15cm of soft snow over a melt freeze crust up to 2200m on all aspects. Previous light, gusting moderate, W-SW winds creating Wind slab 30cm deep in ALP have switched to a light-Moderate N-NW wind. The mid pack is supportive.

Avalanche Summary

Monday's field patrol through the Boundary Lake/Hilda glacier loop noted nothing new. Visibility was good. No patrol occurred on Saturday or Sunday and nothing new was reported. On Friday, a few dry loose avalanches up to size 1.5 occurred in steep rocky terrain from 2300-3000m plus explosives work produced a few size 1.5 loose dry avalanches.

Confidence

Avalanche Problems

Wind Slabs

5-15cm of snow arrived on Thursday and Friday being redistributed by SW then N winds with 5cm additional Sunday night. The cooling trend promotes bonding yet be cautious of wind slabs over a variety of smooth sun or temperature crusts.

  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2.5