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Archived

Avalanche Forecast

Dec 7th, 2018–Dec 8th, 2018
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Glacier.

Always exercise safe back country travel techniques even when the hazard is low. Many early season hazards exist at all elevations.

Weather Forecast

Cold temperatures, light winds and a mix of sun and cloud can be expected today. The alpine may reach -10 deg today and hopefully an inversion will settle in tomorrow morning. The next storm is forecasted to reach Rogers Pass on Sunday evening, Models predict 10cm of new snow and another 10cm to fall on Tuesday.

Snowpack Summary

The Height of snow at Mt Fidelity is just below average for this time of year, see the graphs that are hyper linked here for more info. The main layer of concern is the November 21st surface hoar, which is buried beneath 25 to 40cm of storm snow. This layer is is most likely to be triggered on steep solar aspects, where sun crusts exist.

Avalanche Summary

No new natural avalanches have been observed in the Highway Corridor or reported from the Backcountry in the last four days. Guests have been testing steep unsupported features on many aspects without any reactivity from the snowpack, except some sluffing.

Confidence

Due to the number of field observations

Avalanche Problems

Persistent Slabs

This layer can be found at all elevations, but is spotty in its distribution. It will be most reactive in wind loaded areas and on steep solar aspects where the surface hoar sits on a crust.
Watch for shooting cracks or stiffer feeling snow. Avoid areas that appear wind loaded.Avoid thin, rocky or unsupported slopes.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2