Avalanche Forecast

Issued: Nov 8th, 2020 4:00PM

The alpine rating is moderate, the treeline rating is low, and the below treeline rating is below threshold. Known problems include Wind Slabs.

mark herbison,

Variable winds have created wind slabs on all aspects in the alpine.

Early season hazards like rocks, logs, open creeks, thin ice, etc. are everywhere. Slide down hill and swing those tools with caution.

Summary

Weather Forecast

A mixed bag of sun and cloud with isolated flurries for Monday. Temperatures are forecasted to be inverted, meaning it will be warmer in the Alpine (-7) than at Valley Bottom (-12). Winds will be light from the SW.

Snowpack Summary

10-20cm of snow on top of a 3cm supportive crust with moist snow to ground below. The crust dissipates at ~2400m. At tree line the snowpack ranges from 30-60cm deep. Expect 30 to 40cm of recent snow above 2500m with recent NE winds reverse loaded some ridge line slopes

Avalanche Summary

No new natural avalanche activity reported. Local ski areas reporting explosive avalanche control of wind slabs to size 1 in alpine terrain.

Confidence

Problems

Wind Slabs

An icon showing Wind Slabs

Wind slabs exist from last weeks extreme SW wind event. More recent NE winds have created a reverse loading pattern. Although small in size, anticipate wind slabs in the alpine.

  • Be careful with wind loaded pockets while approaching and climbing ice routes.
  • Be careful around wind loaded areas near ridge crests, cross loaded gullies and roll-overs.

Aspects: All aspects.

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Nov 9th, 2020 4:00PM