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Good Morning. This is Bruce Tremper with the
Well, it’s about time. We’re finally getting some significant snow in the mountains. Places favored by a south to southwest flow, such as Timpanogos, Ben Lomond Peak and Snowbasin, have picked up 15 inches of new snow and the Cottonwood Canyons and Uinta Mountains are around 6 inches of new since yesterday afternoon. Winds have turned westerly and have decreased to around 20 mph with ridge top temperatures around 15 degrees. Remember that all the ski areas will be close to uphill traffic this morning while they are doing avalanche control.
Yesterday the winds were nuking 30-40 mph with gusts to 60, which created localized areas of very sensitive wind slabs. As the snow piles up, I expect the weight of new snow and wind blown snow will easily over load the extremely weak, pre-existing, faceted snow and avalanche activity will become more widespread. I have issued a “special avalanche bulletin” this morning and I expect this will become a full-blown avalanche warning by later today or Wednesday.
Before this latest new snow, the
sun melted most of the south facing slopes down to bare ground, where the new
snow will be anchored fairly well by the rocks and bushes. It’s a whole different story, however, on the
shaded slopes, such as northwest, north, northeast and east facing slopes where
the pre-existing snow has rotted out to become extremely weak depth hoar, which
won’t support much additional weight.
Remember that these kinds of conditions tend to force people onto the
shady slopes because they are the only ones that have a base, and those are
exactly the slopes that are most dangerous.
Today you need to wa
Bottom Line (SLC,
The avalanche danger is CONSIDERABLE today on all slopes above 8,500’ which face northwest, north, northeast and east approaching 35 degrees and steeper. With continued snow, I expect the danger to rise to HIGH later today or on Wednesday. On all southwest, south and southeast facing slopes the danger is MODERATE.
Bottom Line (
The avalanche danger is HIGH today on all slopes above 8,500’ which face northwest, north, northeast and east approaching 35 degrees and steeper. On all southwest, south and southeast facing slopes and low elevation slopes without pre-existing snow the danger is MODERATE.
A beautiful-looking, wide,
trough over the western
Snow on an unstable westerly
flow should continue through Wednesday with ridge top winds swi
The Friends of the
To report backcountry snow and avalanche conditions, especially if you observe or trigger an avalanche, call (801) 524-5304 or 1-800-662-4140, or email to [email protected] or fax to 801-524-6301. The information in this advisory is from the U.S. Forest Service, which is solely responsible for its content. This advisory describes general avalanche conditions and local variations always occur.
Evelyn Lees will update this advisory by on Wednesday morning.
Thanks for calling!
For an explanation of avalanche danger ratings: