Forecast as of 2018-12-08 at 08:00 am and expires on 2018-12-09

Above 4,000ftHigh

2,000 to 4,000ftHigh

Below 2,000ftNone

The Avy Rose shows the forecasted danger by elevation and aspect.

It adds more detail about where you are likely to find the dangers mentioned in the forecast. The inner circle shows upper elevations (mountain top), the second circle is middle elevations, and the outer circle represents lower elevations.

Think of the Rose as a birds-eye view of a mountain, looking down from above. The rose allows our forecasters to visually show you which parts of the mountain they are most concerned about.


Degrees of Avalanche Danger


Avalanche Problems

Problem 1

Storm Snow:


  • Almost Certain
  • Very Likely
  • Likely
  • Possible
  • Unlikely


  • Historic
  • Very Large
  • Large
  • Small


  • Increasing
  • Steady
  • Decreasing

Avalanche Activity

Avalanche activity to size 2.5 reported in the last 24 hours. DOT is conducting avalanche mitigation on the Richardson Hwy through Thompson Pass this morning.


Continued heavy precipitation combined with strong wind. The wind shifted from southerly to northerly around 5am Saturday Dec.8. Warm temperatures; freezing level fluctuating between 1500-2500.


High Avalanche Danger in Thompson Pass. Avoid avalanche terrain. Regular weekend forecasts (Friday, Saturday, Sunday) will begin December 14.