Wednesday January 16, 2019

Wednesday January 16, 2019
Thursday January 17, 2019
Friday January 18, 2019
Confidence: Moderate - Some disagreement in forecast amounts and timing.

Main Concerns

Wind Slab - view Avalanche Problems for detailed information.

Travel & Terrain Advice

Minimize travel above and below cornices. A solid melt freeze crust on all aspects and elevations could be a slipping and sliding hazard. Avoid large wind loaded features in the alpine during the incoming precipitation.

Avalanche Summary

No avalanches observed or reported over the previous forecast period.

Avalanche Problems

Wind Slab

Expect reactive wind loaded pockets in the alpine and treeline on NW through NE aspects with incoming snow Thursday and Friday. These avalanches have the potential to be large in size (size1-2).

Snowpack Summary

Skyrocketing temperatures and clear skies during the recent inversion period caused all surfaces to become moist and then subsequently re-freeze. This has created a solid, supportive crust on all aspects and elevations. Layers below this dominant crust are being bridged and would require a very large trigger to affect.

Snowpack Details

SurfaceStrong supportive melt freeze crust
UpperWell settled
MidWell settled
LowerWell settled

Past Weather

Strong inversion recently with high temperatures in the alpine and treeline. Light winds and no precipitation.

Weather Forecast

WEDNESDAY - No precipitation and freezing levels around 1100 m. Winds moderate gusting to extreme from the east.

THURSDAY - 10 - 30 cm accumulation, higher totals in the southern parts of the region. Freezing levels around 900 m. Winds strong from the east.

FRIDAY - 35 - 60 cm accumulation above 1000 m. Higher totals in the south. Freezing levels around 1300 m. Winds strong and variable, predominantly SE.

Posted on Wednesday January 16, 2019 by Dan Goodwin

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