General Avalanche Hazard : Saturday the 25th

  • Current Temps Base NA° Summit NA°
  • SnowFall Last 24 : 2"

  • SnowFall Next 24 : Trace to 2

Snow Fall Past 24 Hours

  • Past 24 Snow/Prec. Depth Total
  • Jackson: 2" 478 " 150 "
  • Targhee: 4" 111" 370"
  • Raymer: 2"/ 0.15 119" 428"
  • Rendez: 2"/ 0.15" 150" 478"
  • Joseph: 4"/ 0.30" 111" 357"

Weather Past 24 Hours

  • Past 24 At 10,400
  • 5 AM Temp : -6 º F

  • Max Temp : 17

  • AVG Wind Dir : West-Southwesterly

  • AVG Wind Speed : 12

  • Max Gust : 34

Todays Forecast

Southwesterly to westerly at 15 to 25 miles per hour.

Rising into the low teens.

Expect partly to mostly cloudy skies along with the chance for light, convective snow showers.


General Advisory

GENERAL AVALANCHE ADVISORY Temperatures at 5 AM were around five degrees cooler than yesterday morning. At the mid and upper elevations, skiers and riders venturing onto steep, avalanche-prone slopes could trigger small to large wind slabs. West-southwesterly ridgetop winds picked up late in the day on Friday and continued overnight. These winds were strong enough to transport snow near upper elevation ridgelines, and terrain with obvious signs of recent wind loading should be avoided. When evaluating the upper portion of the snowpack, look for failures in density breaks and examine the degree to which the recent snowfall is bonding to sun and rain crusts. The snowpack is mostly stable at the lower elevations and avalanches are unlikely.

Situation

SITUATION On Saturday, the Tetons were enshrouded in clouds most of the day. In the Togwotee Pass and Southwest Trails areas, skies were mostly cloudy. Mountain temperatures only rose a few degrees into the low single digits as the valleys climbed to near 20. Southwesterly to westerly winds ranged from 15 to 25 miles per hour at most ridgetop weather stations. The exception was Mount Coffin, which recorded hourly averages up to 30 to 40 miles per hour. Moderate to strong ridgetop winds continued to redistribute both the few inches of new snow and existing snow available for transport. Today’s snow fall continues to set records at the Jackson Hole Mountain Resort, which has been keeping snowfall and snow depth data since 1975. At the Rendezvous Bowl study plot, the current snow depth of 148 inches is unsurpassed for this day. At the same weather station, the total snowfall for the month of February is already record breaking with three days left to go in the month. Across the region, snow water equivalents from SNOTELs are producing similar information. In the Tetons, the Targhee and Phillips Bench sites are at 122% and 158% of normal, respectively. The Togwotee Pass weather station is reading 157%, and Blind Bull in the Southwest Trails area sits at 206%.

FORECAST FOR Sunday, February 26, 2017 Flow aloft will abruptly shift to the north overnight before backing to the west during the day on Sunday. This weather pattern will bring a cool, moist weather system out of western Canada that will bring overcast skies and light to moderate snowfall through the day. Overnight lows in the mountains will be near zero before rising into the low teens in the afternoon. Westerly ridetop winds will back to the southwest at 20 to 30 miles per hour. The general avalanche hazard is expected to be MODERATE on Sunday. New snow and moderate to strong winds will increase the depth and volume of recently formed wind slabs which rest upon sun crusts and areas of mildly faceted snow. Skiers and riders entering steep, avalanche-prone terrain could trigger these slabs to depths of six to eighteen inches. A slight chance remains for failures down to the early February rain crust, which could increase slab depths an additional foot or two.

TREND FOR Monday, February 27, 2017 AND Tuesday, February 28, 2017 Precipitation intensity will increase Sunday night and continue into Tuesday. The general avalanche hazard will slowly increase as new soft slabs form and additional weight is added to existing wind slabs.

Weather Station Data

Snow Report Phone Numbers

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Data Provided by :http://www.jhavalanche.org | http://www.jacksonhole.com

Last Update : February 25 2017 9:58:48 PM

Page Cache: February 25 2017 10:45:07 PM

We do not guarantee the accuracy of any of this information. This site is just a tool to help you make better decisions in the mountains. If you have a suggestion about how to make this site better email me.

Teton Pass ( Click to Zoom )

Top of Gondi

Base Area

Tram Line

Grand Targhee

Weather Station Data

Snow Report Phone Numbers

Emergency Phone Numbers

Page Cache: February 25 2017 10:45:07 PM

We do not guarantee the accuracy of any of this information. This site is just a tool to help you make better decisions in the mountains. If you have a suggestion about how to make this site better email me.

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Forecast Data from http://www.noaa.gov/

Weather Station Data

Snow Report Phone Numbers

Emergency Phone Numbers

We do not guarantee the accuracy of any of this information. This site is just a tool to help you make better decisions in the mountains. If you have a suggestion about how to make this site better email me.