GNFAC Avalanche Forecast

Since Thursday there has been a mix of snow and rain up to 8000’ with mostly snow above. Near Big Sky, Hyalite, Island Park and Cooke City received 8-15” of snow (0.9-1.9” snow water equivalent), and the Bridger Range and West Yellowstone got 2-4” (0.5-0.7” SWE). Over the weekend temperatures reached mid-30s to low 40s F during the days, and dropped to low 30s F most nigh

Prior to yesterday, the mountains had not received any snow since last Thursday. This week was mostly sunny with daytime temperatures reaching 40s and 50s F the last few days, and cooler cloudy weather arrived yesterday. This morning the mountains near Big Sky, Cooke City, and Hyalite have 4-6” of new snow with 2-3” near Island Park and none elsewhere. Temperatures are high 20s

Since Friday, there has been a mix of sun and clouds with no significant precipitation. Temperatures have generally been above freezing during the day and below freezing at night. On Monday morning, temperatures are in the teens to 20s F, with 10-20 mph winds from the west to northwest. This week, peak high temperatures in the 40s to low 60s F will be on Wednesday, with the warmest

Since Monday, there’s been a mix of sun and clouds and rain and snow (depending on elevation). A storm on Tuesday and Wednesday brought over a foot of snow to the northern Gallatin and Madison Ranges, with 9-10” across much of the rest of the advisory area and around 3” near West Yellowstone and Island Park. High temperatures have been in the 20s and 30s F with lows in the si

On Monday morning, mountain temperatures are in the 20s F at upper elevations near Island Park and Cooke City and in the 30s to low-40s F across the rest of the advisory area. Winds are all over the map, blowing 5-15 mph from the south, west, and north. It is raining in Bozeman, Big Sky, West Yellowstone and Island Park, with 1-2” of snow at higher elevations in Island Park and C

This morning temperatures are low 30s to mid-40s F with high 20s to mid-30s F near Cooke City. Wind is out of the south-southwest at 5-10 mph with gusts of 15-25 mph. There is no new snow. Today, under mostly sunny skies, temperatures will reach high 40s to low 60s F, and wind will be 5-10 mph from various directions. Clouds will increase tonight, and in some places skies might clo

Skies are blue and there is no new snow. Mountain temperatures are in the 30s and 40s F this morning. Winds are out of the southwest and west at 10-20 mph with 30-50 mph gusts. High temperatures today will be a few degrees warmer than yesterday, reaching well into the 50s F in many mountain areas. Winds will be 10-15 mph out of the southwest. Today will be mostly sunny, with chance

Mountain temperatures this morning are in the mid-30s, having not dropped below freezing overnight. There is no new snow. Winds are out of the southwest and west at 10-15 mph around Bozeman, Big Sky, and Cooke City and 25-40 mph with 45 mph gusts around Island Park and West Yellowstone. High temperatures today will be in the 40s and 50s F. Moderate to strong southwest and west wind

Mountain temperatures are in the 20s to low 30s F this morning, with 5-15 mph wind from the west to southwest, and there is no new snow. Today, temperatures will be in the 40s to low 50s F under mostly sunny skies. Winds will be 5-15 mph from the west to southwest.

Since yesterday morning the Bridger Range, Hyalite and Big Sky received 3-7” of new snow, and 1-3” fell elsewhere. Wind has been out of the northwest at 10-20 mph with gusts of 25-40 mph. Temperatures are teens to 20s F. Today, temperatures will reach mid-30s F under clearing skies, and wind will be west-northwest at 10-15 mph with gusts to 25 mph. The next chance for a few inc