Avalanche Forecast
Issued: Jan 13th, 2023 4:00PM
The alpine rating is Deep Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeContinually assess the snowpack for signs of instability with dynamic weather conditions.
Summary
Confidence
Moderate
Avalanche Summary
No recent avalanches have been reported in the region.
Please continue to share any observations or photos on the Mountain Information Network.
Snowpack Summary
High freezing levels produced moist surface snow up to 2000 m on Friday. As temperatures cool a crust will form.
At alpine elevations, roughly 10 cm of low-density snow since the weekend overlies a generally well-settled upper snowpack. The mid and lower snowpack consists of loose facets, with a significant weak layer of large facets and a crust down 80 to 120 cm from the surface. The snow below the crust is generally weak and unconsolidated.
Treeline snow depths are roughly 140 to 160 cm.
Weather Summary
Friday night
Isolated wet flurries, trace accumulation. Moderate southwest ridgetop winds. Treeline low temperatures -6 C. Freezing level falling to 1700 m.
Saturday
Cloudy with flurries, up to 5 cm. Light southwest ridgetop winds. Treeline high temperatures around 0 C. Freezing level below 1700 m.
SundayCloudy with flurries, up to 5 cm. Moderate and gusty southwest ridgetop winds. Treeline high temperatures -1 C, freezing level below 1500 m.
MondayCloudy with isolated flurries. Light southwest ridgetop winds. Treeline high temperatures -3 C, freezing level below 1100 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Uncertainty is best managed through conservative terrain choices at this time.
- In areas where deep persistent slabs may exist, avoid shallow or variable depth snowpacks and unsupported terrain features.
- Don't let the desire for deep powder pull you into high consequence terrain.
Problems
Deep Persistent Slabs
Human triggering of deep persistent weak layers remains possible, especially in shallow areas with variable snow depths. Consequences could be severe if triggered.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 14th, 2023 4:00PM