Avalanche Forecast
South Coast
Forecast rain, snow and fluctuating freezing levels are the name of the game. Heads up as the avalanche danger increases with this new load.
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- The new snow will require several days to settle and stabilize.
Avalanche Problem 2: Loose Wet
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Loose wet avalanches are possible at lower elevations.
Travel and Terrain Advice
- Use caution above cliffs and terrain traps where small avalanches may have severe consequences.
Avalanche Problem 3: Cornices
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Large cornices formed a week ago and they may remain fragile. These monsters could surprise with nasty consequences. Use extra caution around ridge crests.
Travel and Terrain Advice
- Falling cornices may trigger avalanches on slopes below.
- Give cornices a wide berth when traveling on or below ridges.
Avalanche Summary
No new avalanches were reported on Monday.
Forecast precipitation amounts vary, but new storm slabs and loose dry avalanches may occur at upper elevations. Loose wet avalanches are likely at lower elevations.
Snowpack Summary
A mix of rain and snow will fall on a variety of old snow surfaces including crusts and moist snow at lower elevations. In high alpine areas like Sky Pilot and the Chehalis Range the more recent (saturated) snow has refrozen into a solid crust which means that the forecast snow will likely have a poor bond to the crust. At lower elevations rain amounts will saturate the snow surfaces further.
The mid and lower snowpack are well consolidated with no significant layers of concern.
Weather Forecast
Wednesday: Cloudy with precipitation amounts up to 10 mm. Freezing levels up to 2200 m. Ridgetop wind light with strong gusts from the southwest.
Thursday: 5-10 mm expected. Ridgetop winds light with strong gusts from the southwest. Freezing levels near 1700 m and treeline temperatures near 2 degrees.
Friday: A mix of sun and cloud with isolated flurries. Freezing levels near 700 m and treeline temperatures falling to -2. Ridgetop winds light-moderate from the northeast.
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New storm slabs may be reactive at upper elevations. The new snow may have a poor bond to the underlying crust. Loose dry avalanches are likely from steep terrain features.