Intermountain Zone Forecast

December 8 update

Issued: Sat, Dec 08, 2018 at 8AM

Expires: Sun, Dec 09, 2018

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

Above 2,500ft High

1,800 to 2,500ft High

Below 1,800ft None

Degrees of Avalanche Danger ?

1. Low
2. Moderate
3. Considerable
4. High
5. Extreme

Avalanche Danger Rose ?

Avalanche Problems ?

Problem Details

This storm has accumulated nearly 3 inches of water equivalent since Dec.5 (last four days). This has delivered a heavy load to start zones above 2500'. Storm slab is sliding on old surfaces.

Recent 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.

Recent Weather

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.

Additional Info & Media

Posted in Continental Forecasts, Intermountain Forecasts, Maritime Forecasts, VAC Forecasts.