Avalanche Forecast
Issued: Apr 11th, 2021 8:01AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Cornices.
Mike Smallwood,
Its still winter in the mountains. Remember to keep that mindset when leaving town in flip flops with a bbq planned for the afternoon
Summary
Weather Forecast
A ridge of high pressure is on the way. Light flurries are still possible Sunday.
Sunday: Sun + cloud, trace snow, high -7, wind light, freezing level 1400m
Monday: Sun + cloud, trace snow, high -5, wind light gusting to E 35, freezing level 1500m
Tuesday: Sunny, nil precipitation, high -3, wind light gusting to E 30, freezing level 1800m
Snowpack Summary
30cm of new snow in 48hrs with strong S winds fell on top of the April 7th sun crusts, wind pressed surfaces and melt freeze crusts at low elevations. The March 18 crust is down 90cm. A very strong dense mid and lower pack sits on up to 50cm of decomposed crusts and large facetted crystals near the ground
Avalanche Summary
Several sz 1 ski cuts and natural avalanches have been reactive on small features on all aspects this week. A sz 2.5 natural was observed from MacDonald Gully 5 on Friday and a new cornice release sz 2.0 was seen this morning from Grizzly path. Glide slabs are still releasing unpredictably, a sz 3 and a sz 4 this week on the S side of Mt Tupper.
Confidence
Problems
Storm Slabs
30cm of recent snow has settled and drifted into a reactive slab on all aspects, up to 50cm deep in places. Solar input today may be enough to trigger this naturally in steep solar features where it sits over a crust
- Use caution in lee areas in the alpine and treeline. Storm snow is forming touchy slabs.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Cornices
Natural cornice failures continue. Avoid exposure to cornices while approaching ridge tops and on ascents from below
- Extra caution needed around cornices with current conditions.
Aspects: North, North East, East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 12th, 2021 8:00AM
