Danger Scale

GNFAC Instagram

This morning temperatures are low 30s F and the mountains have 2-4" of new snow. Today scattered rain/snow will continue, east wind will increase to 10-20 mph and temperatures will reach high 30 to low 40s F.
Cooler temperatures should put recent wet snow instabilities to rest.  If the snowpack is not frozen below the new snow stay alert for the possibility to trigger a large wet slide. Otherwise, be cautious of fresh drifts and loose slides of new snow. More travel advice on our forecast page: https://www.mtavalanche.com/forecast

Yesterday large wet slabs were observed near Cooke City and Emigrant, and also likely occurred elsewhere (📸 B. Fredlund). The last few days temperatures reached 50s F and did not freeze overnight, followed by rain yesterday. See our weather and avalanche log for a partial list of recent avalanche activity: https://www.mtavalanche.com/weather/wx-avalanche-log
This morning temperatures are low 30s F and the mountains have 2-4" of new snow. Today scattered rain/snow will continue, east wind will increase to 10-20 mph and temperatures will reach high 30 to low 40s F. Cooler temperatures should put recent wet snow instabilities to rest. If the snowpack is not frozen below the new snow stay alert for the possibility to trigger a large wet slide. Otherwise, be cautious of fresh drifts and loose slides of new snow. More travel advice on our forecast page: https://www.mtavalanche.com/forecast Yesterday large wet slabs were observed near Cooke City and Emigrant, and also likely occurred elsewhere (📸 B. Fredlund). The last few days temperatures reached 50s F and did not freeze overnight, followed by rain yesterday. See our weather and avalanche log for a partial list of recent avalanche activity: https://www.mtavalanche.com/weather/wx-avalanche-log
By 10am this morning (Fri 4/19) temperatures reached 50F under clear skies ☀️ up to 9,000’, and the snowpack did not freeze last night. Widespread natural wet avalanches occurred throughout the day, which involved recent new snow and many were large enough to bury a person. 
Above freezing temperatures tonight will keep the snowpack unfrozen and weak. Clouds and cooler temps tomorrow should minimize natural avalanche activity, but large wet slides will remain easy to trigger if the snowpack does not freeze. Be cautious of travel on and underneath steep slopes. More info at https://www.mtavalanche.com/forecast #gnfacobs #wetsnow #springobs
By 10am this morning (Fri 4/19) temperatures reached 50F under clear skies ☀️ up to 9,000’, and the snowpack did not freeze last night. Widespread natural wet avalanches occurred throughout the day, which involved recent new snow and many were large enough to bury a person. Above freezing temperatures tonight will keep the snowpack unfrozen and weak. Clouds and cooler temps tomorrow should minimize natural avalanche activity, but large wet slides will remain easy to trigger if the snowpack does not freeze. Be cautious of travel on and underneath steep slopes. More info at https://www.mtavalanche.com/forecast #gnfacobs #wetsnow #springobs

GNFAC News

Fund-Raiser for the Friends of GNFAC. Support avalanche awareness, education and information throughout southwest Montana. Tickets and info.

May 3-4th, Give Big online fundraising campaign! This is our one-and-only financial appeal to our users.

Sledders, mark your calendar for May 19, the 2nd Annual Sled Fest in Cooke City. It’s a fundraiser for the Friends of the Avalanche Center and there will be a DJ, raffle prizes and BBQ on the mountain.

Alex Marienthal and Doug Chabot provide a few thoughts about why you should read the daily advisory. As the season wears on, don't get "Advisory Fatigue." There is a lot of winter still to come!

Resources

Weather Stations

Weather Stations provide the GNFAC forecasters with information on snowfall, wind and temps from around the region. The Weather Log summarizes this daily.

Avalanche Education

GNFAC partners with groups around the region to provide evening avalanche classes, plus full day and multi-day courses, including some weekend field days. All our class offerings, along with courses from other providers, are on our Education Calendar.

Placenames

Use this map to find the locations of unfamiliar places mentioned in the advisory. Also take a look at our glossary of avalanche terms.

Support

Donate to the Friends of GNFAC; or order DVDs or 'Snow Sense' avalanche safety handbook.