Avalanche Forecast
Regions: Banff Yoho Kootenay.
A storm is approaching with wind and snow load. Avoid travel in avalanche terrain, especially steep gully's and lee areas.
Weather Forecast
Between 20 and 40cm of storm snow is expected overnight tonight and into Thurs. Temperatures are expected to be warm in the valley, with the ridge line being just below zero. The wind is going to pick up to 100km/hr from the SW late Weds night and persist into Thurs.
Snowpack Summary
The system has arrived and deposited only 5-10cm of new moist snow on to the existing 30-70cm snowpack. Little wind is associated with the new snow as of this afternoon. The bond between new and old snow is reportedly good for now but more load is on the way and this will likely change for the worse. Another 20-40cm is expected on Thursday.
Avalanche Summary
No new avalanches observed or reported on Wednesday.
Confidence
Timing, track, or intensity of incoming weather system is uncertain on Thursday
Avalanche Problems
Wind Slabs
With the current system moving through the forecast region, prime windslab building properties exist. Extreme wind from the SW, relatively warm temps and 20-40cm of storm snow. Expect most of the windslab development to occur in the alpine.
Aspects: North, North East, East, South East.
Elevations: Alpine.
Likelihood: Very Likely
Expected Size: 1 - 2.5