Avalanche Forecast
Lizard Range and Flathead
A significant storm is expected to raise avalanche danger to high for Wednesday.
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.
Avalanche Summary
On Monday, a natural and explosive triggered avalanche cycle was reported in the Lizard Range up to size 2.5 or 3. On Tuesday, smaller (size 1.5) avalanches were readily triggered by ski cutting and explosive avalanche control.
Snowpack Summary
50-60 cm new snow now rests on a variety of old surfaces. These old surfaces include crusts on south through west facing slopes, wind-scoured slopes and, in sheltered terrain at and below treeline, large feathery surface hoar crystals. Lower in the snowpack, you should be able to find a hard crust that was buried near the end of November. This crust is approximately 30cm thick and extends from 1600m to mountain top on all aspects. Average snowpack depths at treeline in the region range from 90 to 130cm.
Weather Forecast
Tonight: 10-20 cm new snow expected. Moderate easterly winds.
Wednesday: a further 10-20 cm new snow expected. Moderate northeasterly winds. Treeline temperatures around -8C.
Thursday: Mostly dry during the day. Moderate northwesterly winds. Treeline temperatures around -10C.
Friday: Light snow, 2-5 cm. Light easterly winds. Treeline temperatures around -12C.
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Storm snow totals of 100 cm are likely by Wednesday. Avalanches could be large and run further than expected. It's a good time to throttle back more than you think is required and minimize exposure to overhead hazard as well as the terrain you're on.