Avalanche Forecast
Issued: Apr 2nd, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
ldreier,
Avalanche Canada
Strong southwest wind will continue to build fresh wind slabs in the alpine and at treeline. These slabs will be especially reactive where they overlie a crust. Wet loose avalanches are possible on lower elevation slopes that are exposed to the sun.
Summary
Confidence
Weather Forecast
Saturday night: Mix of clear sky and cloudy periods, trace of new snow, strong southwest wind, alpine low -4 °C, freezing level at 1300 m.
Sunday: Mix of sun and clouds, up to 5 cm snow, moderate to strong southwest wind, alpine high -2 °C, freezing level around 1500 m.
Monday: Mainly cloudy, 10-15 cm snow, moderate to strong southerly wind, alpine high -3 °C, freezing level around 1400 m.
Tuesday: Cloudy, 5-10 cm snow, strong westerly wind, alpine high -5 °C, freezing level at 1300 m.
Avalanche Summary
On Saturday, a few natural dry loose avalanches were reported.
On Friday, a small wind slab avalanche was observed in steep rocky terrain.
No new avalanches were reported on Thursday.
On Wednesday, several natural wind slab avalanches and machine-triggered slabs up to size 1 were reported in the Renshaw area.
Snowpack Summary
Above 1900 m, 15-25 cm of new snow overlies 20 cm of denser snow that tapers rapidly with elevation. About 50-60 cm snow sit over the mid-March interface at upper elevations.
Below 1900 m a melt-freeze crust exists on all aspects and to mountain top on solar aspects. Below the crust, the top 10-30 cm of the snowpack are moist.
Terrain and Travel
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
- Wind slabs may be poorly bonded to the underlying crust.
- Pay attention to cornices and give them a wide berth when traveling on or below ridges.
- As surface loses cohesion due to melting, loose wet avalanches become common in steeper terrain.
Problems
Wind Slabs
Strong southwest wind will continue to build fresh and reactive wind slabs. Wind slabs can be expected in leeward terrain features in the alpine and treeline. These wind slabs will be most reactive where they overlie a slick crust.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 3rd, 2022 4:00PM
