Teton Area
Jackson Ranger District, POB 1689, Jackson WY 83001
Issued: Wed February 22, 2012 5:49 AM
G E N E R A L - A V A L A N C H E - H A Z A R D |
| High Elevations (9,000´-10,500´) |
Morning
4-HIGH |
Afternoon
4-HIGH |
| Mid Elevations (7,500´-9,000´) |
Morning
4-HIGH |
Afternoon
4-HIGH |
| Low Elevations (6,000´-7,500´) |
Morning
3-CONSIDERABLE |
Afternoon
3-CONSIDERABLE |
| Danger Level | Travel Advice | Likelihood of Avalanches | Avalanche Size & Distribution |
| 5 Extreme |
 |
Avoid all avalanche terrain |
Natural and human-triggered avalanches certain. | Large to very large avalanches in many areas. |
| 4 High |
|
Very dangerous avalanche conditions. Travel in avalanche terrain not recommended. |
Natural avalanches likely; human-triggered avalanches very likely. |
Large avalanches in many areas; or very large avalanches in specific areas. |
| 3 Considerable |
 |
Dangerous avalanche conditions. Careful snowpack evaluation, cautious routefinding and conservative decision-making essential. |
Natural avalanches possible; human-triggered avalanches likely. |
Small avalanches in many areas; or large avalanches in specific areas; or very large avalanches in isolated areas. |
| 2 Moderate |
 |
Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern. |
Natural avalanches unlikely; human-triggered avalanches possible. |
Small avalanches in specific areas; or large avalanches in isolated areas. |
| 1 Low |
 |
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features. |
Natural and human-triggered avalanches unlikely. |
Small avalanches in isolated areas or extreme terrain. |
M O U N T A I N - W E A T H E R - P A S T - 2 4 - H O U R S |
| At 10,400' Elevation: |
5 AM Temp: 21º F |
Max Temp: 22º F |
Avg Wind Direction: Westerly |
Avg. Wind Speed: 30 |
Max Wind Gust: 75 |
| |
| Location |
Snowfall/Prec. |
Total Snow Depth |
Total Snowfall |
| At 9,300' Elevation (Raymer Plot) |
14"/
1.26" |
89" |
258" |
| At 9,580' Elevation (Rendezvous Bowl Plot) |
8"/
1.02" |
90" |
249" |
| At 8,800' Elevation (Chief Joseph Plot) |
15"/
1.57" |
100" |
273" |
|
M O U N T A I N - W E A T H E R - F O R E C A S T - F O R - T O D A Y
|
Heavy snowfall with strong winds. Rain at low elevations.
|
| Temperature Forecast for 8,000´-9,000´: |
Warming to the low 30s. |
| Ridge Top Wind Forecast for 10,000´: |
Westerly at 40 - 50 M.P.H. with very strong gusts. |
| Snowfall Expected Next 24 Hours: |
12 - 14" |
|
G E N E R A L - A V A L A N C H E - A D V I S O R Y
|
|
Rapid, heavy snowfall over two feet in the past 48 hours and very strong westerly winds have created easily triggered or naturally running slabs to five feet in depth at the mid and high elevations. The new snow rests on weak, light density snow and temperatures continue to warm. This combination of factors has made an ideal situation for dangerous avalanche activity. THERE IS NO SAFE WAY TO TRAVEL IN OR BELOW AVALANCHE TERRAIN TODAY. At low elevations the hazard is increasing with warm temperatures and rainfall. Road cuts have already begun to slide and more should be expected as the weak snowpack looses strength. Ravines and rooftops will also be shedding snow.
|
|
For further information call 307-733-2664  To report an avalanche observation call 307-739-2607 |
|
|
SPONSORS: Jackson Hole Mountain Resort, Bruce Hayse M.D., Storm Show Studios, Skinny Skis, Chippy's Kitchen and Catering, Apex Real Estate and Property Management, Teton Gravity Research, Burgess Custom Outerwear & Apparel, Snow King Resort, Idaho National Laboratory , Wells Fargo, Ski Bum Music Festival, Grand Targhee Resort, DeFazio Law, Eric Balog, Twenty Two Designs, Jack Stout of Jackson Hole Properties, Jackson Hole Snow Devils, Jackson Hole Ski Atlas, Stewart Johnson, CPA, TicketPrinting.com, Ticket River, Street Account, The North Face, Salomon, Backcountry Access and Recco
|
|
