Avalanche Forecast
Issued: Apr 20th, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
jsmith,
Avalanche Canada
10-25 cm of new snow and extreme southerly wind have formed fresh storm slabs that will likely be reactive to human triggers.
Use small low consequence slopes to test the bond of the new snow and watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
Summary
Confidence
Low
Avalanche Summary
No avalanches were reported on Wednesday. However, observations in this region are currently very limited.
Observations are very limited at this time of year, please consider sharing any information or photos you have on the Mountain Information Network to help guide our forecasts.
Snowpack Summary
10-25 cm of new snow and extreme southerly wind on Thursday have formed fresh storm slabs that will likely be reactive to human triggers. The new snow overlies a rain crust that likely extends to mountain tops in many areas.
The middle and lower snowpack are strong and well-bonded.
Weather Summary
Thursday Night
Mostly cloudy with isolated flurries; 0-10 cm / 30 km/h southwest ridgetop wind / Temperature at treeline around -1 C / Freezing level 1000 m
Friday
Mostly cloudy with isolated flurries; 0-10 cm / 20 km/h southwest ridgetop wind / Temperature at treeline around 1 C / Freezing level 1200 m
Saturday
Cloudy with isolated flurries; 0-5 cm / 40 km/h southwest ridgetop wind / Temperature at treeline around 5 C / Freezing level rapidly rising to 2200 m
Sunday
Mostly cloudy with isolated flurries; 0-5 cm / 40 km/h southwest ridgetop wind / Temperature at treeline around 1 C / Freezing level 1300 m
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
- Use small low consequence slopes to test the bond of the new snow.
- Continue to make conservative terrain choices while the storm snow settles and stabilizes.
- Expect slab conditions to change drastically as you move into wind exposed terrain.
Problems
Storm Slabs
10-25 cm of new snow and extreme southerly wind on Thursday have formed fresh storm slabs that will likely be reactive to human triggers, especially in wind affected terrain.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Apr 21st, 2023 4:00PM
