Avalanche Forecast
Issued: Mar 8th, 2021 4:22PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Tim Haggarty,
A hard freeze to start the day Tuesday with little heating expected as winds pick up. Watch for further wind slab development.
Summary
Weather Forecast
With mainly clear skies, a strong freeze is expected Monday night. As west winds pick up to the moderate range in the alpine Tuesday, minimal heating is expected despite clear skies. Clouds will develop overnight Tuesday leading to milder morning temperatures and the potential for flurries through the day Wednesday. Clearing overnight into Thursday
Snowpack Summary
Since Friday, up to 30 cm of recent snow sits over solar crusts and wind effect in open areas. New solar crusts on isolated steep slopes formed on Monday. Facets are present down 70-100 cm but we are getting minimal to no results in snowpack tests and not seeing avalanche activity on these layers like we are in the Banff and Kootenay regions.
Avalanche Summary
Two large events were observed in the past 24 hrs in the neighboring BYK region. A size 3 cornice triggered slab ran between the 4rth and 5th buttresses of Rundle Sunday, and a large powder cloud was observed off of Mt. Lefroy into the Death Trap from Lake Louise Monday. Both of these events seem to have involved the persistent layers.
Confidence
Problems
Wind Slabs
10-15 cm of recent snow Fri / Sat was redistributed by moderate to strong SW winds along treeline ridge crests and above Sunday. An additional 10cm that arrived Monday may contribute to these slabs as moderate winds arrive Tuesday.
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 9th, 2021 4:00PM
