Avalanche Forecast
Issued: Nov 28th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs, Storm Slabs and Loose Dry.
Garth Lemke,
Let the 20-30cm of new snow stabilize and make conservative decisions the next few days. There will be high consequence if you tickle a slope in the wrong spot.
Summary
Weather Forecast
Sunday will be cloudy, flurries, -11 C, and light SW winds. Monday will be flurries, 6cm of snow, -13C, and light SW winds gusting to 50km/hr. Tuesday will be sun, no snow, -15C and light West winds.
Snowpack Summary
Friday night there was 20cm of new snow and strong Westerly winds. A lot of snow got whisked away in exposed locations and powder settled into sheltered locations. The snowpack remains highly variable with either soft or wind effected surface snow. Parkers weather plot has 101cm. A crust from Nov 4 is 70cm deep and found up to 2600m.
Avalanche Summary
Saturday's explosive control at Parkers slabs resulted in two size 2.5 avalanches from the wind loaded storm snow. A few other thin slabs were noted in steep alpine terrain. The visibility was good.
Confidence
Due to the number and quality of field observations
Problems
Wind Slabs
20cm of new snow Friday night with strong winds created wind slabs on many ridgetop features. Be cautious of local wind influences where reverse or cross loading may have occurred.
- Use caution in lee areas. Recent wind loading has created wind slabs.
- If triggered the wind slabs may step down to deeper layers resulting in larger avalanches.
Aspects: North, North East, East, South East, North West.
Elevations: All elevations.
Likelihood
Expected Size
Storm Slabs
20-30cm of new snow will require a day to bond and settle. Be patient.
- If triggered the storm slabs may step down to deeper layers resulting in large avalanches.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Dry
The new snow has enough mass to warrent this problem. Give it a few days to settle particularly in steep gullies.
- 874
- If triggered dry loose point releases can form deeper deposits in terrain traps.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 29th, 2020 4:00PM
