Bridger Teton Backcountry Avalanche Forecast Center Bridger Teton Avalanche Center

WESTERN WYOMING AVALANCHE ADIVSORY
Issued on Wed November 26, 2014 5:11 PM    

SITUATION

In the last four days the mountains have received over forty inches of snow and nearly five inches of moisture. Temperatures rose during this period particularly yesterday when temperatures increased fifteen degrees while 15-20 inches of snow fell containing three inches of water. At the lower elevations the storm ended with significant rain. In the mountains today, temperatures held in the upper twenties while summit winds were from the west with twenty to twenty five mile per hour averages. Skies were mostly cloudy with a few snow flurries falling in localized areas. The snowpack gained strength during these conditions today.

Visibility limited the reporting of storm cycle activity however significant slides with three and foot foot crowns were reported on Green River Traverse Slide just to the south of the Jackson Hole Mountain Resort and on Olive Oil in Grand Teton National Park. The first day of avalanche reduction efforts at the Jackson Hole Mountain Resort did not produce widespread avalanches but did result in several large avalanches. All of this activity can be viewed on the avalanche events area of our website. These slabs were all wind slabs that ran on recently formed and older snow layers. At lower elevations the snowpack remained supportive even though rain and warm temperatures both saturated and settled it.

FORECAST FOR Thursday, November 27, 2014

Thanksgiving day looks to be partly to mostly cloudy, dry and warm. Temperatures could reach above freezing temperatures at 10,000 feet while valleys warm into the forties.

The general avalanche forecast is expected to be Considerable above 9000 feet and Moderate below that elevation. At the higher elevations, wind slabs to three feet depth could be triggered in steep avalanche terrain. Although these slabs have gained strength quickly, the potential remains for human triggered large and dangerous hard slabs. At lower elevations, the potential for wet slides will increase in the afternoon as the snowpack is weakened by warm temperatures.

TREND FOR Friday, November 28, 2014 AND Saturday, November 29, 2014

The avalanche hazard will decrease during this time as the recent snowfall continues to settle and stabilize.
For further information call 307-733-2664 To report an avalanche observation call 307-739-2607
SPONSORS: Togwotee Mountain Lodge, Box Y Ranch, Jackson Hole Mountain Resort, Brooks Lake Lodge, Wyoming State Trails Program, Bruce Hayse M.D., Wyoming Public Television KCWC, Storm Show Studios, Skinny Skis, Chippy's Kitchen and Catering, Apex Real Estate and Property Management, Teton Gravity Research, Snow King Resort, Idaho National Laboratory , Jackson Hole Mountain Guides, Grand Targhee Resort, DeFazio Law, Eric Balog, Twenty Two Designs, Stewart Johnson, CPA, Jackson Hole Ski Atlas, Jackson Hole Snow Devils, Exum Mountain Guides, Four Pines Physical Therapy, Backcountry Access, Grand Teton Floor & Window Coverings, Clif Bar & Company, Outdoor Research, Steve Romeo Memorial Fund, International Snowmobile Manufacturers Association, Voile and Danny Williams Architect
 
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