Avalanche Forecast
Issued: Feb 13th, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
CG,
Avalanche Canada
Wind-affected slopes will demand caution, as storm slabs lurk at ridgeline and across open, exposed slopes.
The sun is packing a bit more punch these days. Solar aspects may see increased avalanche activity the next few days with its appearance.
Summary
Confidence
Avalanche Summary
A natural avalanche cycle Sunday night/Monday morning saw numerous slab avalanches from sz 2-3.5. Ross Peak, Gunners, and Cougar Creek West paths had notable avalanches, with debris out on their fans at valley bottom.
Snowpack Summary
Strong SW winds and 30cm of overnight snow have formed a storm slab in lee and crossloaded features at Alpine/Treeline elevations. Sheltered areas hold deep, unconsolidated powder.
A thin sun crust was observed on steep S'ly aspects Monday from the short sunny period in the am.
The Nov 17 deep persistent weak layer has been dormant in GNP for several weeks now.
Weather Summary
Convective flurries will give way to a cool, clearing trend over the next few days.
Tonight: Clear periods, Alp low -11*C, light N winds
Tues: mix of sun/cloud, Alp high -10*C, light NW winds
Wed: sun and cloud, Alp high -11*C, light W winds
Terrain and Travel Advice
- Continue to make conservative terrain choices while the storm snow settles and stabilizes.
- Use small low consequence slopes to test the bond of the new snow.
- Avoid exposure to slopes that have cornices overhead.
Problems
Storm Slabs
Storm snow and strong SW winds created storm slabs in Alpine and Treeline. Cooler temps the next few days will help try to lock this layer in place, but caution is mandatory when transitioning into wind-affected areas.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Feb 14th, 2023 4:00PM
