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 April 18, 2010 6:06 AM

General Avalanche Hazard :

Morning Afternoon

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

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

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

Past 24 Hours :
5:00 AM Temperature at 10,400' : 27° F
Maximum Temperature at 10,400' Past 24 Hours : 40° F
Average Wind Direction at 10,400' Past 24 Hours : Southwesterly
Average Wind Speed at 10,400' Past 24 Hours : 12 MPH
Maximum Wind Gust at 10,400' Past 24 Hours : 30 MPH
Snowfall/Prec. Past 24 Hours Rendezvous Bowl Plot : 0"/ 0.03"
Total Snow Depth 9,580´ Elevation Rendezvous Bowl Plot : 82"
Total Snowfall Starting October 1 Rendezvous Bowl Study Plot : 414"
Snowfall/Prec. Past 24 Hours Raymer Study Plot : 0"/ 0.04"
Total Snow Depth 9,300´ Elevation Raymer Study Plot : 76"
Total Snowfall Starting October 1 Raymer Study Plot : 379"
At 10,400' Elevation : 5 AM Temp: 27° F
Max Temp: 40° F
Avg Wind Direction: Southwesterly
Avg. Wind Speed: 12
Max Wind Gust: 30

Location
Snowfall/Prec.
Total Snow Depth
Total Snowfall
At 9,300' Elevation (Raymer Plot)
0"/ 0.04"
76"
379"
At 9,580' Elevation (Rendezvous Bowl Plot)
0"/ 0.03"
82"
414"
At 8,800' Elevation (Chief Joseph Plot)
1"/ 0.08"
108"
454"

Mountain Forecast :
Skies will be mostly clear this morning, with increasing clouds this afternoon as the chance for rain and possibly some hail and thunderstorm activity develops for later in the day.
Temperature Forecast for 8,000´-9,000´ : Rising into the upper forties.
Ridge Top Wind Forecast for 10,000´ : Southwesterly at 5-15 mph.
Snowfall Expected Next 24 Hours : 0"

Mountain Three Day Forecast :

General Avalanche Advisory : Sunlight and temperatures that are to quickly rise well above the freezing point will rapidly weaken the snowpack today. This will provide for the possibility of wet slide activity as well as increase the chance for human triggered slab avalanches to three foot depths in very steep terrain near cliff and rocky areas. Avalanches at low elevations are not expected today where the slopes generally lack snow cover.

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.