TETON AREA FORECAST
Issued at 02/23/2021 06:07 Valid until: 02/23/2021 23:59
CURRENT CONDITIONS (Mountain Weather Past 24 Hours)
At 10,400' Elevation
5 AM Temp
Avg Wind Dir
Avg. Wind Speed
Max Wind Gust
16 º F
Total Snow Depth
Chief Joseph Plot
Mountain Weather Forecast for Today
Expect a quick round of moderate to heavy snowfall as a cold front moves through the area today.
Temperature forecast for 8,000 - 9,000: Decreasing through the day down to the low teens.
Ridge Top Wind Forecast for 10,000´: Southwesterly to westerly at 25 to 40 miles per hour.
Snowfall Expected Next 24 Hours : 6 to 12
GENERAL AVALANCHE HAZARD
High Elevations (9,000´-10,500´)
Mid Elevations (7,500´-9,000´)
Low Elevations (6,000´-7,500´
General Avalanche Advisory
Very dangerous avalanche conditions are developing at the upper elevations, and travel in avalanche terrain is not recommended. Dangerous avalanche conditions exist at the mid elevations. Yesterday in Grand Teton National Park, a snowboarder triggered a 2 foot deep wind slab on a north facing aspect around 8,900 feet. He was caught, carried through extreme terrain and did not survive. Similar slides are very likely to be triggered today, and natural activity will be possible. Persistent deep slab avalanches could be human triggered, occur naturally or step down from the release of a wind slab. Involvement in one of these destructive, large to very large avalanches will almost certainly result in another fatality. It is critical for skiers and riders to choose the appropriate terrain for the current avalanche conditions. Play it safe today and come home to your friends and family; stay off of and out from underneath terrain steeper than 30 degrees.
TODAY'S AVALANCHE PROBLEMS
TYPE OF PROBLEM
Overnight, westerly ridgetop winds backed to the southwest and ramped up to 30 to 40 miles per hour with gusts to 68. Available snow was easily transported onto leeward slopes and wind slabs stiffened and gained mass. Very strong winds will continue today along with moderate to heavy snowfall, and wind slabs will continue to build. Above 7,500 feet, skiers and riders are very likely to trigger these slabs with depths ranging from 2 to 5 feet. Natural activity will also be possible. Below 7,500 feet, wind slabs up to 18 inches deep could be human triggered.
TYPE OF PROBLEM
Persistent Deep Slab
Persistent deep slab avalanches remain a serious concern. These slabs could be triggered by backcountry travelers or occur naturally. They could also step down from the release of a wind slab. Slab depths will likely be between 4 and 8 feet above 7,500 feet. If you are caught in one of these destructive slides, you will most likely not survive. Below 7,500 feet, these slabs are likely to range in depth from 2 to 4 feet.
For further information call 307-733-2664 To report an avalanche observation call 307-739-2607