Bollettino valanghe

Ogden

Utah Avalanche Center
Vedi sulla mappa

Pericolo valanghe

  • Alta quota
  • Limite del bosco
  • Sotto il limite del bosco
Open full map
Non aggiornato — questo bollettino è scaduto 3 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

AVALANCHES ARE OCCURRING NOW.

The avalanche danger is HIGH on many slopes of the upper elevations. The danger is CONSIDERABLE on many slopesat the mid-elevations.

Avalanches can be triggered at a distance and trigger other avalanches in adjacent terrain.

The TRAVEL ADVICE is easy today: Travel in avalanche terrain is not recommended. This includes below avalanche terrain. Remember that traumatic injury is likely with any avalanche involvement this early season.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    2

    If traveling to the upper elevations, you will be able to trigger large avalanches at a distance today that fracture down into the old weak snow from October/November. This weak basal stack of cards exists primarily on westerly to northerly to easterly aspects These avalanches may be 2-3' deep and hundreds of feet wide. They are not to be messed with. Cracking and collapsing state the obvious, as it were, but the only prudent terrain choices are on low angle terrain today.

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    2

    You'll find an endless supply of soft slabs of wind drifted snow in a variety of encatchment areas, both along the ridgelines and well below. These large smooth pillows may be up to 3' deep or more in exposed terrain and will also be sensitive to the weight of a backcountry traveler. Be aware that the cornices are growing and becoming unstable - any cornice fall is likely to trigger an avalanche below.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    2

    Heavy dense snowfall is coming in on a warming trend and is "upside-down"; that is - higher density snow falling on lower density snow - and it's a recipe for trouble. Similarly, rain on snow at the lowest elevations will lead to unstable wet snow conditions. Shooting cracks are a clear sign of instability (Brackelsberg photo)

Special Announcement

Please be aware of uphill travel policies at the ski areas and respect their closures to keep you and their workers safe. The 5th Annual Avalanche Awareness Week is December 3-10. The week's goal is to save lives through activities that promote avalanche awareness, education, and safety. We have a variety of events around the state. Find an event near you.

Recent Activity

Ski area control work along the Ogden skyline produced many soft slab avalanches breaking into the old snow from October/November. Many of these avalanches were triggered at a distance with collapsing and cracking the rule and not the exception.

Snow and Weather

The Winter Storm Warning continues through Monday morning.

Could a decaying atmospheric river be denied?

It's been a powerhouse: strong wind, heavy dense snowfall, blowing and drifting snow, rising temperatures. And the storm rages on.

Overnight snow and water numbers are 8-12" (1.40" snow water equivalent) with storm totals of roughly 14-20" and 2.50-4.0" of snow water equivalent. Aside from all the snow, winds from the west-northwest have been moderate to strong with anemometers are spinning 25mph gusting 45mph. Mountain temperatures have climbed into the mid to upper 20s.

For today, we'll see continued, albeit diminished, snowfall rates with moderate to strong winds from the west-northwest. Temperatures will be in the mid to upper 20s. I expect an additional 8-14" of snow through tomorrow morning, where the winds, finally, start to lose steam. We start to clear by Monday afternoon with a warming trend pushing mountain temperatures into the upper 30s to upper 40s (mid-elevations) by Tuesday. A weak system follows for Thursday.

Additional Info

Forecaster's Corner:

Matsuo Bashō lived in Japan from 1644-1694 and is often viewed as the the avalanche hunter's favorite poet. His most famous haiku, below.

❄️

Come, let's go

Snow-viewing

Til we're buried.

General Announcements

CLICK HERE FOR MORE GENERAL INFO AND FAQ

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.

Regioni coperte