Jackson Hole Avalanche/Backcountry

This report is updated daily at 8:00 a.m. In rapidly changing conditions, go to JHAvalanche.org to get the latest, most up-to-date avalanche and backcountry forcast. The following is the Teton Area report. JHAvalanche also includes reports on Continental Divide Trails/Togwotee Pass and Southwest Trails/Grey's River Area.

Bridger Teton Avalanche/Backcountry Report

Date : Sun March 21, 2010 6:11 AM

General Avalanche Hazard :

Morning Afternoon

High Elevations (9,000' - 10,500') LOW MODERATE

Mid Elevations (7,500' - 9,000') LOW MODERATE

Low Elevations (6,000' - 7,500') LOW MODERATE

Past 24 Hours :
5:00 AM Temperature at 10,400' : 18° F
Maximum Temperature at 10,400' Past 24 Hours : 22° F
Average Wind Direction at 10,400' Past 24 Hours : Westerly
Average Wind Speed at 10,400' Past 24 Hours : 19 MPH
Maximum Wind Gust at 10,400' Past 24 Hours : 30 MPH
Snowfall/Prec. Past 24 Hours Rendezvous Bowl Plot : 0"/ 0"
Total Snow Depth 9,580´ Elevation Rendezvous Bowl Plot : 66"
Total Snowfall Starting October 1 Rendezvous Bowl Study Plot : 332"
Snowfall/Prec. Past 24 Hours Raymer Study Plot : 0"/ 0"
Total Snow Depth 9,300´ Elevation Raymer Study Plot : 55"
Total Snowfall Starting October 1 Raymer Study Plot : 301"
At 10,400' Elevation : 5 AM Temp: 18° F
Max Temp: 22° F
Avg Wind Direction: Westerly
Avg. Wind Speed: 19
Max Wind Gust: 30

Location
Snowfall/Prec.
Total Snow Depth
Total Snowfall
At 9,300' Elevation (Raymer Plot)
0"/ 0"
55"
301"
At 9,580' Elevation (Rendezvous Bowl Plot)
0"/ 0"
66"
332"
At 8,800' Elevation (Chief Joseph Plot)
0"/ 0"
77"
344"

Mountain Forecast :
Expect increasing cloud cover later in the day ahead of an approaching Pacific low pressure system.
Temperature Forecast for 8,000´-9,000´ : Rising into the mid to upper 30s.
Ridge Top Wind Forecast for 10,000´ : Southwesterly at 15 to 25 miles per hour.
Snowfall Expected Next 24 Hours : Trace to 2"

Mountain Three Day Forecast :

General Avalanche Advisory : The snowpack is mostly stable this morning and avalanches are unlikely. If skies remain clear throughout the day, warm temperatures and sunshine will soften the snowpack in the afternoon in steep, sun affected avalanche terrain bringing the possibility of wet loose sluffs along with some chance of full depth wet slabs. Backcountry users should get an early start and plan to be off of sunlit aspects in the afternoon.

For further information call the Bridger-Teton National Forest Avalanche Line at : 307-733-2664
Call 307-739-2759 to report any observed avalanche activity.

Condition Key

Extreme: Wide spread areas of unstable snow exist and avalanches are certain on some slopes. Backcountry travel should be avoided.

High: Mostly unstable snow exists on a variety of aspects and slope angles. Natural avalanches are likely. Travel in avalanche terrain is not recommended.

Considerable: Dangerous unstable slabs exist on steep terrain on certain aspects. Human triggered avalanches probable. Natural avalanches possible.

Moderate: Areas of unstable snow exist. Human triggered avalanches are possible. Larger triggers may be necessary as the snowpack becomes more stable. Use caution.

Low: Mostly stable snow exists. Avalanches are unlikely except in isolated pockets.