Bridger Teton Avalanche Center
WESTERN WYOMING AVALANCHE ADIVSORY
Issued on Tue March 11, 2014 5:26 PM
Cloudy skies gave way to clear skies by noon today and temperatures at higher elevations rose from the low teens to upper twenties. Even though temperatures at these elevations stayed below freezing, most snow surfaces became sun affected due prolonged direct mid March sunlight. In high steep and shaded terrain the approximately one foot of snow that fell overnight remains as cold powder while other aspects and lower elevations a new sun crust and melt-freeze crust will be prevalent in the morning. Temperatures reached the forties on lower elevation slopes. Strong northwest winds with thirty five mile per hour averages veered to the east today and decreased to less than ten mile per hour averages this afternoon.
Small point releases in the new snow from warming were reported on Taylor and a skier triggered a small ten inch pocket on Mount Glory today. A larger slide with a two foot crown was reported on Mount Albright in Grand Teton National Park today. There is a newly posted picture on the event page of a large hard slab remotely triggered on Sunday snowmobilers near McDougal Gap in the Wyoming range.
FORECAST FOR Wednesday, March 12, 2014
High pressure will move in and dominate the region for the next several days. Clear skies and light northwest winds are expected on Wednesday. Mountain temperatures are to rise from morning lows near ten degrees to highs near thirty. Similar lows with highs in the forties are expected in the valleys.
In the Tetons, the general avalanche hazard will be Moderate in the morning and could rise to Considerable as warming and sunlight cause recently formed slabs and older slabs to weaken and become more susceptible to human triggers. Some potential remains for slabs to reach as much as eight feet in depth.
In the Togwotee pass area and Southwest Trails areas the hazard will be Considerable where the chance to trigger deep persistent layers is greater. The hazard will increase in the afternoon in these areas as well.
TREND FOR Thursday, March 13, 2014 AND Friday, March 14, 2014
The avalanche hazard will decrease slightly as a period of high pressure and melt freeze cycles causes the upper portion of the snowpack to strengthen. Little change will occur to deep weak layers during this time.
For further information call 307-733-2664
To report an avalanche observation call 307-739-2607
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