11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
Tuesday, February 6, 2018

Although unlikely, persistent slab avalanches remain possible on isolated steep slopes in the backcountry. Outlying shady slopes with shallow and weak snow are the most suspect, or very steep slopes, especially in gullies and canyons that remain shady all day.

  • Widespread buried faceted layers appear dormant now, and persistent slab avalanches are unlikely, but if you trigger one it could be dangerous.
  • Pay attention to possible signs of instability like cracking and whumpfing or collapsing, but remember these signs aren't always present when avalanches are triggered, so you have to dig down into the snow to find poor snow structure.
  • Continue to avoid very steep rocky slopes at upper elevations with shallow, weak snow cover.
  • It is still a good idea to avoid steep, northwest through easterly facing slopes, especially where wind drifted, so that you can avoid tirggering one of these slides.
Persistent Weak Layer
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Current Conditions: 

Under clear skies, it actually feels like winter this morning – with temperatures in the low 20s at most Ogden mountain stations this morning.  Combined with brisk winds, the wind chill is close to zero this morning along the highest ridge lines.  The westerly wind speeds are variable, occasionally reaching 15 to 20 mph averages, with gusts in the 30s, at the mid elevations.  Mount Ogden has had 30 mph averages at times in the past 12 hours.

Ogden area mountains received up to an inch of snow in the past 48 hours.

Recent Activity: 

No recent avalanche activity has been reported from the Ogden area mountains.

Mountain Weather: 

A mild northwest flow will continue over the area through Friday.   Mostly clear skies this morning, with increasing clouds this afternoon.  Temperatures will warm into the low 40s at 9,000’.  The westerly winds will average 5 to 15 mph at the mid elevations, with the high peaks reaching averages of 25 to 35 mph at times, with gusts in the 40s.   The next chance for a few inches of snow is Saturday. 

Bottom Line: 

The snow is stable in most areas and avalanches are generally unlikely. But LOW danger does not mean no danger.  

 You might trigger cornice falls and/or shallow wind slab avalanches on drifted slopes at upper elevations.   And avalanches stepping into old snow remain possible on isolated steep slopes with poor snow structure.  Avoiding steep northwest through easterly facing slopes is still reccommonded.  



    Normal Caution

    Wind Slabs:  There may be a few new and old wind slabs on upper elevation slopes, expecially those facing easterly and northerly. With minimal snow available for transport, these wind slabs should be isolated and pretty small.  

    Cornices: Avoid travel on and below any new and old cornices.

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    This information does not apply to developed ski areas or highways where avalanche control is normally done. This advisory is from the U.S.D.A. Forest Service, which is solely responsible for its content. This advisory describes general avalanche conditions and local variations always occur.


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