Avalanche Forecast
Issued: Mar 1st, 2024 4:00PM
The alpine rating is Persistent Slabs and Storm Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeWhile danger ratings are dropping and natural activity may stop, dangerous avalanche conditions still exist.
Stick to conservative terrain, avoid large slopes and overhead hazard
Summary
Confidence
Moderate
Avalanche Summary
Widespread avalanche activity was observed Thursday. Natural and human-triggered avalanches were reported within the storm snow, including several notable remotely triggered slabs to size 2.5, which indicates a very sensitive snowpack. Check out this MIN for more details.
Avalanches occurred on all aspects and on several bed surfaces - including within the storm snow and on buried weak layers up to 80 cm deep.
Snowpack Summary
40-80 cm of recent snow has been heavily wind affected in exposed terrain. Storm snow sits over wind-affected surfaces and old wind slabs in exposed areas at all elevations.
Multiple weak layers exist in the upper and mid snowpack. The most concerning layer is found down 30 to 100 cm with a layer of facets (or in isolated areas, preserved surface hoar) above a crust. The storm snow and buried weak layers have produced recent large avalanche activity. Although natural avalanche activity may taper off, human triggering remains likely.
Weather Summary
Friday Night
Clear skies with some cloud. 10-20 km/hr easterly winds. Freezing level valley bottom.
Saturday
Cloudy with possible sunny breaks and isolated flurries. 10-25 km/h southerly wind. Treeline temperature -9 °C. Freezing levels reach 500 m.
Sunday
Cloudy with sunny periods and isolated flurries. 10-20km/hr southeast winds. Treeline temperature -9 °C. Freezing levels reach 500 m.
Monday
Cloudy with sunny periods and isolated flurries. 10-20km/hr southwest winds. Treeline temperature -9 °C. Freezing levels reach 500 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Continue to make conservative terrain choices while the storm snow settles and stabilizes.
- Potential for wide propagation exists, fresh slabs may rest on surface hoar, facets and/or crust.
- Brief periods of sun could quickly initiate natural avalanche activity.
Problems
Persistent Slabs
Facets or surface hoar above a thick crust persists deep in the snowpack. Storm slab avalanches may step down to this layer resulting in very large, destructive avalanches.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Storm Slabs
Deeper and more sensitive slabs exist on north and east facing slopes near ridges. Danger may rise quickly if the sun appears.
Good travel habits are key, minimize your exposure to avalanche terrain and evaluate safe spots with caution.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 2nd, 2024 4:00PM