Forecast for the Ogden Area Mountains

Evelyn Lees
Issued by Evelyn Lees on
Thursday morning, December 20, 2018
The avalanche danger is LOW, and the snowpack mostly stable. But Low danger doesn’t mean no danger - avalanches can be triggered on isolated terrain features - most likely a steep slope with a recent drift of wind blown snow. As always, avoid being on or beneath any cornices along ridgelines.
Carry and practice with your beacon, shovel and probe. Travel one at a time in steep terrain, keep your partner in sight and be in position to get to them quickly should there be an avalanche.
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Moderate
Considerable
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Weather and Snow
Yesterday’s storm - of furious winds and a trace of snow - is moving to the east, and being replaced by strong high pressure. Temperatures are in 20s this morning at most Ogden stations, and will soar into the mid 40s at the 8000’ level, and low 30s along the high ridge lines by afternoon under sunny skies. Winds have shifted back to the southwest, and are averaging 15 mph, with gusts to 20, along the highest ridge lines. Speeds should remain less than 35 mph along the high ridges today, and less than 15 mph at the mid elevations.
Recent Avalanches
No recent reports of avalanche activity in the Ogden area mountains. Yesterday's new wind slabs were isolated and not reactive to skis.
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Avalanche Problem #1
Normal Caution
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Location
Likelihood
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Description
The snowpack seems just plain worn out from weeks of alternating heat and wind, and triggering an avalanche is unlikely today. However, winter travel in the mountains always has avalanche risk so evaluate the snowpack carefully if you are getting into steep terrain.
Wind slabs: Yesterday’s strong winds eroded snow, but drifts were small, isolated and not very sensitive to skis. There is concern that some of the various winds slabs from the week's multiple wind events are sitting on weak snow, and could be triggered by a person. Identify and avoid wind slabs on steep slopes - mountain terrain channels the wind in odd ways, so look for these hard, rounded, hollow sounding wind slabs or drifts on a variety of aspects and elevations. They will be on the lee sides of ridge crests and around terrain features, like gully walls, sub ridges and down into open bowls at both the mid and upper elevations.
General Announcements
This information does not apply to developed ski areas or highways where avalanche control is normally done. This forecast is from the U.S.D.A. Forest Service, which is solely responsible for its content. This forecast describes general avalanche conditions and local variations always occur.