New windslabs have/are developed in alpine terrain that skiers should pay close attention too. Choose supported features and rein yourself in a little. Watch for the affects of solar radiation on solar aspects later in the day.
Avalanche Problem 1: Wind Slabs




- Avoid lee and cross-loaded terrain near ridge crests.
- Give cornices a wide berth when travelling on or below ridges.
Avalanche Problem 2: Persistent Slabs




Lots of variability on this interface down 50cm. This is a persistent slab that is overlying a thick suncrust that was buried on solar aspects on March 15th.
- Minimize exposure to sun exposed slopes when the solar radiation is strong.
- Carefully evaluate terrain features by digging and testing on adjacent, safe slopes.
Avalanche Problem 3: Cornices




Cornices are large and looming and become weak with daytime heating. They may collapse and trigger an avalanche on the underlying slopes.
- Cornices become weak with daytime heating, so travel early on exposed slopes.
Avalanche Summary
One size two wet slab was observed on the EEOR later in the day on Friday but otherwise, only isolated pinwheeling on solar aspects.
Snowpack Summary
SW winds increased in alpine overnight and into the morning building windslabs up to 20cm thick in lee features. Recent snow is overlying a supportive MFC that is 4-6cm thick up to 2200m. All aspects were moist up to 2000m by midday and moist snow suspected up to the peaks on solar. Hard sudden planar results on the March 15th crust down 50cm at 2200m on a SE aspect at treeline. Start early when travel on the crusts is good and fast
Weather Forecast
Winds out of the SW are forecast to increase overnight further loading and building on the current windslabs. Conditions will be a mix of sun and cloud with daytime highs are -7C in the alpine. Pay attention to the sun, solar radiation is strong at this time of year and solar aspects will quikly become less stable as temperatures warm up. These decreases will be most apparent in thin, steep, rocky solar terrain.
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Windslabs up to 20cm thick in lee and crossloaded features. These slabs will build overnight on Friday and get a little bit larger and stiffer. Use Caution.