Skyline Avalanche Advisory

Forecaster: Brett Kobernik

BOTTOM LINE

Danger by aspect and elevation on slopes approaching 35° or steeper.
(click HERE for tomorrow's danger rating)


Danger Rose Tutorial

Pockets of a CONSIDERABLE avalanche danger still exist on north through east facing slopes in the 9000 foot and higher range.  This includes most of the larger bowls which will be luring us toward them this weekend.  These areas still have the potential to produce dangerous avalanches.  The danger is less pronounced on the mid elevation north through east facing slopes.  A LOW danger exists on all aspects at lower elevations out of the wind effected terrain.


CURRENT CONDITIONS

About a foot or better of fresh snow fell over the last 5 days making for real nice riding conditions.  The snow added up slowly in a few different periods through the week.  The slow loading didn't up the avalanche danger very much aside from producing some fresh drifts.  Temperatures are in the low to mid teens and the westerly winds have slowed a few mph over the last 24 hours.


RECENT ACTIVITY

No significant new avalanches have been reported nor have we seen any.  Reports are still trickling in from large avalanches from during the Christmas avalanche cycle.  A handful of large slides were reported from Rolfson Canyon and a snowmobile triggered slide was reported from upper Pleasant Creek.  I did not get to visit any of these sites but it's my speculation that they all broke into old weak snow near the ground.


THREAT #1

WHERE PROBABILITY SIZE TREND
      Over the next 24 hours.

After spending a couple of days along the Skyline this week, I came across enough evidence to make me nervous about avalanches breaking into weak old snow.  In the higher terrain there, I found weak snow near the ground combined with our all too familiar crust.  I didn't get into a lot of the bigger bowls but finding the weak snow/crust combo and hearing about more avalanche activity is enough to get me nervous.  This VIDEO demonstrates exactly what is going on.  It's not that easy to get something to fail but if it goes it has the chance for being a large and deadly slide.


THREAT #2

WHERE PROBABILITY SIZE TREND
      Over the next 24 hours.

With almost any new snow along the Skyline we need to watch for fresh wind drifts.  Pay attention as you leave lower elevations and watch for cracking on the surface.  Stop occasionally and get off your ride and feel the snow to see if it's got a hollow sound to it.  These are clues that the winds have been drifting snow.  Also, look for any recent avalanches which are the most obvious clue.


MOUNTAIN WEATHER

We'll have partly cloudy skies today with ridgetop temperatures getting into the low to mid twenties.  Northwest winds will gust into the 20s and 30s along the highest ridges.  Some moisture will move through Sunday into Monday producing the chance for flurries with not much accumulation expected.  A ridge of high pressure keeps pushing our way as the week continues with mild winter weather.


GENERAL ANNOUNCEMENTS

Your snow and avalanche observations are very helpful to us.  It helps us produce detailed information that's a benefit to everyone in the backcountry.  Click HERE to submit any backcountry observations.


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.


This advisory provided by the USDA Forest Service, in partnership with:

The Friends of the Utah Avalanche Center, Utah Division of State Parks and Recreation, Utah Division of Emergency Management, Salt Lake County, Salt Lake Unified Fire Authority and the friends of the La Sal Avalanche Center. See our Sponsors Page for a complete list.