Bulletin d’avalanche

Provo

Émis le Mar 23, 2021valide jusqu’au Mar 24, 2021Utah Avalanche Center

Danger d’avalanche

Alpin
Limite forestière
Sous la limite forestière

Périmé — ce bulletin a expiré 5 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

The avalanche danger is LOW this morning on all aspects and elevations as we generally have safe avalanche conditions. Watch for small isolated soft slabs and sluffing (dry loose avalanches) within the new snow. Terrain selection is essential when dealing with small avalanches. If we see an increase in northeast winds, then the avalanche danger will quickly rise to MODERATE at the upper elevations for fresh slabs of wind drifted snow, and human-triggered avalanches will be possible.

It's spring, and the weather can change rapidly. Be ready to alter your plans based on changing conditions that you observe in your travels.

Problèmes avalancheux

Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Possible
Taille
2
Wind: There are a few things to keep in mind today... First will be the increase in northeast winds. Some stations have already switched wind direction to the northeast as of 6:00 am. If these winds come earlier in the day than expected and, for some reason, blow stronger than expected, then the avalanche danger could quickly rise to moderate. I don't trust northeast winds. For now, winds are calm, and it should be easy to identify if the wind picks up and starts transporting snow. Be willing to change your plan if you see active wind transport.

New Snow: Soft slabs of new snow 6-8 inches deep and up to 100' wide have been reported, and I would be thinking about this in very exposed terrain. In terrain with clean run-outs, these avalanches are not large enough to bury a person, and the consequences are low. However, one of these avalanches could easily sweep you off your feet and take you off a cliff or into rocks, and the consequences will be severe. Slope cuts and small cornice drops effectively test these soft slabs (make sure no one is below).

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Recent Activity

No new avalanche activity was reported yesterday in the Provo Mountains. Yesterday in the Wasatch, one new snow avalanche was reported from Nat Grainger in upper White Pine (picture below). This avalanche was a small soft slab 6-8 inches deep and roughly 100' wide that easily released with a slope cut at their feet.

Snow and Weather

This morning under clear skies, the mountain temperatures are in the mid-teens °F. The winds are currently blowing from the north at speeds of 5-10 mph, with the occasional gust into the 20's at some upper elevations. Many wind sites are reading speeds that average less than 5 mph.

Clouds once again should fill in over northern Utah this morning as a trough crosses into Nevada. As this trough enters Nevada, it becomes weaker and then re-strengthens over Flagstaff, Arizona, later today, shifting the flow to the northeast with some wrap-around moisture. Unfortunately, the northeast winds are forecast to increase later today and could ruin the powder party. Some wind stations as of 6:00 am are already showing the shift in wind direction to the northeast.

It will be spring weather today with convective showers due to daytime heating, meaning that we could see some periods of heavy snowfall in certain places depending on your location. Some areas could end up with a trace of new snow while others get 2-4" of new snow throughout the day. The good news - the temperatures remain cold, and the clouds should hide the strong March sun keeping the snow cold as well. Gotta love the spring in Utah.

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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.

Observations and Avalanches

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