Avalanche Forecast
Issued: Dec 1st, 2022 4:00PM
The alpine rating is Storm Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeBe aware of changing avalanche conditions throughout the day. Hazard will rise as storm snow accumulates.
Enjoy the low-elevation snow, but remember what hazards lurk below it!
Summary
Confidence
Low
Avalanche Summary
Observations are limited at this time of year. No new avalanches have been reported or observed. If you do head into the backcountry please submit a MIN report!
Snowpack Summary
10 - 20 cm of snow will accumulate through the day Friday and add to the previous storm snow to create a 30-60 cm storm slab.
In open alpine and treeline areas, moderate winds are expected to create deep pockets of wind slab in lee areas.
By end of day Friday an average of 70-100 cm of snow can be found in the alpine, with wind-loaded areas up to 150 cm.
Every storm helps to creep the snowpack toward threshold for avalanches however some areas at treeline and most areas below treeline have yet to overcome ground roughness and remain below the threshold.
Weather Summary
Thursday night
Cloudy with light flurries starting after midnight, accumulating to a few cm by morning. Light south to southeast ridge winds. Alpine temperature of -5 and freezing levels at the valley bottoms.
Friday
Cloudy with flurries that increase in intensity throughout the day. Snow amounts total 10-15 cm by the evening. Moderate east ridge winds. Alpine temperatures hover around -5 and freezing levels rise to 300 m.
Snow continues through Friday night adding another 10 - 15 cm by Saturday morning.
SaturdayScattered clouds clearing in the afternoon. Light southeast to east winds. Alpine temperature high of -1. Freezing levels rise to 600 m on the southern half of the island.
SundayClear skies and light east winds. Alpine temperatures rise to +1 degree. Freezing levels 900 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Adjust your travel plans accordingly to the changing conditions of elevation and time of day.
- Watch for changing conditions today, storm slabs may become increasingly reactive.
- Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
Problems
Storm Slabs
Storm slabs will build throughout the day on Friday as snow accumulates. Watch for changes in slab sensitivity on steep slopes where snow totals +20 cm.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 2nd, 2022 4:00PM