GNFAC Avalanche Forecast

On Thursday, the mountains received 1-5” of snow, favoring Hyalite Canyon and the areas near West Yellowstone and Cooke City. On Friday morning, temperatures are in the teens to 20s F, and winds are 10-20 mph from the west to northwest. On Friday, mountain temperatures will push into the 40s F under sunny skies. Sun will persist, and temperatures will be in the 50s and 60s F through the weekend. Nighttime temperatures will largely stay above freezing except for the West Yellowstone and Cooke City areas. Winds will be 5-15 mph from the northwest to southwest. There will be no precipitation until early next week when the chance of rain and high-elevation snow showers arrives Monday night.

The recent storm ended late Friday with a total of 36-44” in the Bridger Range, 16-24” in the Madison and Gallatin ranges, and 9-12” near Cooke City and West Yellowstone. Over the weekend wind was west-southwest at 5-20 mph with gusts of 25-35 mph. Temperatures reached high 20s to low 30s F with partly cloudy skies becoming sunny yesterday. Today, wind will be west-southwest at 5-15 mph, temperatures will reach high 30s to low 40s F, and clouds will increase bringing rain in the valleys and snow in the mountains. By tomorrow morning the Bridger Range could have 4-8” of new snow with 2-4” elsewhere. The middle of the week will be sunny with temperatures reaching mid-40s F during the day and dropping to high 20s and low 30s F overnight. Another chance of snow arrives Thursday with westerly wind increasing to 15-25 mph.

Since Tuesday evening the Bridger Range received 32-40” of snow, near Big Sky and Hyalite got 10-12”, and since Monday the mountains near West Yellowstone and Cooke City got 6-9”. Wind has been westerly at 5-20 mph with gusts of 15-30 mph. This morning temperatures are single digits to teens F. The next few days forecast is cold and generally snowy with temperatures reaching high 20s to low 30s F through Saturday, then mid-40s on Sunday. Wind will be 15-25 mph out of the west. The mountains near Bozeman and Big Sky are favored for snowfall with 3-5” possible today and 3-7” tomorrow through Saturday. Near Cooke City could receive 3-7” through Saturday and near West Yellowstone might see 2-4”.

This weekend, daytime temperatures climbed above freezing during the day with 5-20 mph winds from the southwest to the northwest. There was no new snow. Last night was the lightest freeze of the weekend, with temperatures in the upper 20s to low 30s F. Monday will be the warmest day of the week, with temperatures in the 40s F under partly cloudy skies. Cloud cover will increase as the day progresses, and light snow begins Monday night. Snow and cooler temperatures will continue from Tuesday through Friday. The first pulse of snowfall will bring 5-6” to the Big Sky area, 4-5” to the mountains around Bozeman, and 2-4” near West Yellowstone and Cooke City by Wednesday morning.

Yesterday snowfall dropped 13” in the Bridger Range, 10-12” in Cooke City and Hyalite, and 5-7” near Big Sky and West Yellowstone. This morning temperatures are single digits to teens F, and today temperatures will reach mid-20s to low 30s F. Yesterday wind was southwest at 15 mph with gusts of 25-45 mph, and this morning wind is northerly at 5-15 mph.  A couple inches of snow are possible today before skies clear for the weekend. Wind will remain calm to light out of the north through tomorrow, and on Sunday will shift westerly and increase to 15-25 mph. Temperatures will reach high 30s on Saturday and high 40s on Sunday. Overnight lows will be in the teens tonight and mid-20s to low 30s F the next couple nights.

This morning, temperatures are high 20s to mid-30s F, and wind is out of the southwest at 10-20 mph with gusts of 30-40 mph. Today will have increasing clouds and temperatures reaching low to mid-40s F. Wind will continue out of the southwest at 15-30 mph before colder air and snow arrive this evening. Tomorrow and Friday temperatures will be mid-20s to low 30s F, and tonight the mountains could get 1-3” of snow. Tomorrow heavy snow is expected to deliver 10-12” to most of the mountains in southwest Montana with more possible in the Bridger Range, Hyalite and Big Sky.  

Mountain temperatures remained above freezing for the second night in a row, with lows in the 30s and 40s F. Winds ramped up to 10-30 mph from the south to the west and will increase through the day, averaging 20-45 mph. High temperatures will range from the upper 40s F to near 60 degrees F. Temperatures will likely drop below freezing tonight, and a potent spring snowstorm will move into the area Wednesday night.

Temperatures are generally in the mid-30s this morning, with only the highest elevations experiencing below-freezing temperatures last night. Winds are 10-15 mph from the west to southwest. Today, highs in the mountains will range from 50 to 60 degrees F with 10-20 mph winds from the south to the southwest.

This morning there is 1” of new snow near Cooke City and none elsewhere. Temperatures are mid-20s to low 30s F. Wind has been west-southwest at 15-20 mph with gusts of 30-40 mph. Today will be mostly sunny with temperatures reaching mid-40s F, and wind will be westerly at 10-20 mph. Very warm temperatures are expected the next couple days, then the next chance for snow is Tuesday night.

This morning, there is no new snow, temperatures are high teens to low 30s F, and wind is south-southwest at 15 mph with gusts of 30-55 mph. Today will be partly sunny with temperatures reaching mid-30s to low 40s F. Wind will be out of the west-southwest at 15-30 mph. No significant snow is expected for the next couple days.

There is no new snow. Winds are 10-15 mph out of the southwest and west with gusts of 25-30 mph. Temperatures are in the teens and low 20s F. Temperatures will rise into the 30s and 40s F this afternoon under mostly sunny skies. Moderate southwest winds will continue. Sunny skies and warm temperatures will continue through the weekend.

Last night 2” fell at Big Sky, and an inch in Taylor Fork and Cooke City. Wind is blowing west to southwest averaging 10-20 mph with gusts of 35 mph. Wind speed and direction will remain unchanged today. Under mostly clear skies mountain temperatures will rise from the single digits to the upper 20's to mid 30's F. No new snow is expected, but today is the first day of a potential 4 day solar storm of sunny skies, warm weather, and the emergence of alabaster white feet in flip-flops.

A surprise storm hit the Bridger Range yesterday morning and dropped 6” of low density snow (3%) with another 2” last night. 2” also fell in the northern Gallatin Range with only a trace elsewhere. Wind is 10-20 mph out of W-NW and skies are partly cloudy with temperatures in the single digits F. Today will warm into the 20s F with light westerly wind. Later this afternoon and tonight 1-2” may fall, mostly in the southern regions.

This morning, temperatures are in the single digits to teens F with 5-15 mph wind from the northeast to northwest. Winds are blowing 30-40 mph from the east to the north in the Bridger Range. The mountains received a trace to 1” of snow overnight. Today, temperatures will be in the teens to 20s F with 10-20 mph winds from the north. A trace to 2” of snow will fall by tomorrow morning.

The mountains around Big Sky, West Yellowstone and Cooke City received 1-3” of snow yesterday. Temperatures are in the single digits F, and winds calmed and shifted to the southwest to southeast at 5-10 mph. Today, temperatures will be in the 20s F with east to northeast winds blowing 5-15 mph. West Yellowstone will see up to 5” of snow by tomorrow morning, with a trace to 2” elsewhere.

Since yesterday morning, near West Yellowstone and Cooke City received 10-11” of heavy new snow, and 3-4” fell near Bozeman and Big Sky. Wind has been out of the southwest-west at 15-30 mph with gusts of 40-85 mph. Temperatures are singles to teens F and will reach 20s F today. Wind will continue at 15-30 mph out of the west with gusts to 40 mph. Snow showers will deliver 3-5” near Cooke City and Taylor Fork with 1-3” near Big Sky and West Yellowstone, and maybe 1” near Bozeman by tomorrow morning.

A trace to 3” of new snow fell yesterday morning. Winds are 10-20 mph out of the SW-W with gusts of 15-25 mph. Temperatures are in the teens F this morning and will rise into the 20s and 30s F this afternoon. Moderate SW-W winds will continue. Snow showers today and tonight will bring 1-2” of new snow tomorrow morning.

The mountains received 2-3” of snow in the last 24 hours with temperatures in the low 20s F and light SE-SW wind blowing 10-15 mph with gusts of 23 mph. Snow is starting to fall and will blanket the area with 4-7” by tomorrow morning. Temperatures will remain in the 20s and wind will be light to moderate from the SE-SW. Tomorrow looks to be sunny with more snow forecasted over the weekend.

At 5 a.m., the mountains received 1-2” of snow with wind averaging 10-15 mph and gusting to 25-30 mph from the SE-SW. Temperatures are in the high teens under cloudy skies. Today will remain cloudy with similar wind and temperatures. Light snowfall will start late this afternoon and drop 1-2” by tomorrow morning, with the rest of Thursday forecasted to be snowy.

This morning, temperatures are in the single digits to teens F with 10-15 mph winds from the west to the south. Excepting Cooke City, the mountains received 1-2” of snow yesterday morning before this weekend's storm exited the area. Today, temperatures will climb into the 20s to around 30 F with 10-15 mph wind from the southwest. A trace to 1” of snow is possible tonight.

There is no new snow to report. Winds are 10-20 mph out of the southwest to west, gusting to 40 mph. Temperatures rose slightly overnight and are in the 20s and 30s F this morning. Temperatures will continue to rise into the 30s and maybe even hit 40 F. Skies will be mostly sunny with south and southwest winds at 10-20 mph. A light dusting of snow is possible tonight.

In the last 24 hours the mountains around Big Sky to West Yellowstone and Cooke City received 1-2” of snow. Skies are clearing, wind is blowing W-SW at 10-20 mph and gusting to 35 mph, and temperatures are in the teens (F). Today will warm into the mid-20's with ridgetop wind blowing 10-20 mph from the W-SW. No new snow is expected in the coming days, just sunny skies.

At 5 a.m. it is currently snowing around West Yellowstone (4” of new) and Taylor Fork (1”). Wind is blowing east across our forecast area which is an unusual direction. Wind speed is 5-15 mph with the Bridger Range getting gusts of 25 mph. Today the mountains around West Yellowstone will get 3” with 1-2” falling everywhere else. Temperatures will remain in the high teens F. Wind will shift to the southwest in the southern ranges today and remain easterly elsewhere at speeds of 10-15 mph.

This morning, temperatures are in the upper teens to low 20s F with 10 to 20 mph wind from the west to southwest. The mountains around Cooke City, West Yellowstone, and Big Sky received 3-4” of new snow, with 1-2” near Bozeman. Today, high temperatures will be around 30 degrees F with light winds blowing 5-10 mph from the west to southwest. We may see another inch of snow this morning. The mountains around West Yellowstone will get another 2-4” of snow tonight.

The mountains near Cooke City, West Yellowstone and the southern Madison Range have 4-5” of new snow, and elsewhere there is no new snow. This morning temperatures are teens to mid-20s F and wind is southwest-west at 15-25 mph with gusts of 35-50 mph. Today temperatures will reach high 20s to low 30s F with southwest wind at 15-35 mph. Snow is expected this afternoon and tonight. By tomorrow morning there is a chance for 3-5” of new snow near Bozeman, Big Sky and Cooke City with 6-10” possible near West Yellowstone.

This morning there is no new snow, temperatures are teens to mid-20s F and wind is south-southwest at 5-15 mph with gusts to 25 mph. At the top of Big Sky and in Hyalite southwest wind is 25 mph with gusts to 55 mph. Today will start mostly clear with clouds increasing in the southern areas this afternoon. Temperatures will reach high 20s to low 30s F with southwest wind at 15-25 mph. This evening and tomorrow there is a chance for snow near West Yellowstone and Cooke City with 1-2” possible by morning.

There is no new snow. Winds are 10-15 mph out of the southwest and west with gusts of 15-30 mph. Temperatures are in the teens and 20s F. High temperatures will be in the 20s and low 30s F. Light to moderate southwest and west winds will continue. Skies will be generally sunny, except around West Yellowstone where it will be mostly cloudy. No new snow is expected.

This morning, there are 6” of new snow in the Bridger Range and 2-4” across the rest of the advisory area. Winds are 10-15 mph out of the southwest and west with gusts of 15-30 mph. Temperatures are in the 20s F. High temperatures will be in the high 20s and low 30s F. Light to moderate west winds will continue. Snow showers today will not amount to significant accumulations.

This morning temperatures are in the teens F with SW-W wind blowing 10-20 mph. Yesterday, an inch of snow fell in West Yellowstone. Today will be mostly cloudy with SW wind blowing 20 mph. This afternoon snowfall is expected to start in the southern ranges and by morning the mountains around West Yellowstone and Cooke City will have 2” and a trace to 1” falling everywhere else.

This morning, temperatures are in the single digits to low teens F with 10-20 mph winds from the west to southwest. Cooke City received 2” of new snow with 1” in West Yellowstone. Today, temperatures will be in the upper teens to low 20s F with 10-15 mph winds from the southwest and West Yellowstone may get an inch of snow by tomorrow morning.

This morning, mountain temperatures are in the single digits to low teens F with 5-15 mph winds from the southwest. There is no new snow. Today, temperatures will reach the upper teens to mid-20s F with 5-15 mph wind from the southwest. The southern portions of the advisory area will get a trace to 1” of new snow by tomorrow morning.

This morning there is no new snow, temperatures are single digits to teens F, and wind is out of the east to northeast at 0-10 mph. In the Bridger Range wind is east at 20 mph with gusts to 35 mph. Today will be mostly sunny with temperatures in the teens to low 20s F and light to moderate easterly wind.

Yesterday morning, 1-3” of snow fell across the advisory area, ending by noon. Winds this morning are 5-15 mph out of the north and west. Temperatures are in the high single digits and teens F. Winds will remain light and shift northeast through the day. High temperatures will be in the teens and 20s F. Skies will be mostly cloudy with chances for a few snowflakes to fall, but no significant accumulations.

This morning, there are 4-6” of new snow around West Yellowstone, Big Sky, and Cooke City, with a trace-2” near Bozeman. Winds are 10-15 mph out of the southwest and west with gusts of 30-40 mph. Temperatures are in the high teens and low 20s F. Temperatures today will rise into the mid-high 20s F. Moderate west and southwest winds will continue. A couple inches of snow are possible before snowfall tapers off later this morning.

There are 8” of new snow in the Lionhead area, 2” in the Taylor Fork, and no new snow across the rest of the advisory area. Winds are southwest and west at 15-20 mph with gusts of 25-40 mph. Temperatures are in the teens F. Temperatures will rise into the 20s and low 30s F. Winds will continue out of the southwest and west at 15-25 mph with gusts into the 30s mph. Snowfall today and tonight will bring up to 2” of new snow near Big Sky, 3-6” around West Yellowstone and Cooke City, and just a trace around Bozeman. 

Yesterday, 3” of snow fell around Big Sky and 1-2” everywhere else. With temperatures in the single digits to low teens F, wind is blowing W-SW at 10-20 mph with gusts of 35 mph. Today will be sunny in the northern ranges and partly cloudy in the south. Mountain temperatures will rise into the high teens and W-SW wind will remain 10-20 mph. By morning the mountains around West Yellowstone and Cooke City could have a trace to 1” of snow.

We had crazy weather in the last 24 hours: rain and snow in the northern mountains, snow in the south and winds hitting 105 mph on Lone Peak. 2-3” of dense snow fell around Bozeman and Big Sky and 6-9” fell near West Yellowstone and Cooke City. Wind was W-SW and blew 40-80 mph in most areas yesterday and lessened to 20-40 mph this morning. Mountain temperatures are in the 20s. Today the mountains will get 1-2” of snow, below freezing temperatures and W-SW wind at 15-30 mph.

Winds from the south to southwest are blowing 20-35 mph with temperatures in the 20s F near West Yellowstone and Cooke City and in the 30s F in the mountains near Bozeman and Big Sky. Cooke City got 4” of new snow with an inch near West Yellowstone. Today, temperatures will be in the 30s F in the northern ranges and in the 20s F in the southern ranges. Winds will blow 25-40 mph from the south to southwest. Precipitation will increase this morning with 10-12” of snow around West Yellowstone, 8-10” near Cooke City, 2-4” in Big Sky and south of Bozeman, and 1-2” in the Bridger Range by tomorrow morning. Precipitation will begin as rain at lower elevations and in the northern portions of the advisory area.

Nice won out, and the mountains received 2-4” of new snow across the advisory area yesterday. This morning, mountain temperatures are in the 20s F with 10-20 mph wind from the west to the southwest. Today, temperatures will be in the 30s F with 10-20 mph winds from the south to the southwest. Cooke City and West Yellowstone may get an inch of snow tonight, but the rest of the advisory area will have to wait until tomorrow for new snow.

Since yesterday morning the mountains near Cooke City received 3” of new snow and 1” fell in the southern Madison Range with none elsewhere. Wind has been strong out of the west-southwest, averaging 15-30 mph with gusts to 55 mph. This morning temperatures are 20s F to low 30s F, and up to low 40s F in the Bridger Range. Today, temperatures will cool slightly with snow showers throughout the day, and wind will be out of the west-northwest at 20-30 mph with gusts to 40 mph. The mountains will receive 3-7” of new snow by late tonight.

This morning, temperatures are in the single digits above 0 F, winds are 10-25 mph from the west to the southwest and there is 1” of new snow in the mountains near Cooke City. Today, temperatures will be in the low teens F with 15-25 mph winds from the west to the southwest. The mountains around Cooke City will receive 2-3” of new snow by tomorrow morning, with 1-2” near West Yellowstone.

Since yesterday morning one inch of snow fell near West Yellowstone and no snow fell elsewhere. This morning temperatures are zero to 20 F, and wind is west-southwest at 15-30 mph with gusts to 45 mph. Today, temperatures will reach teens to low 20s F with wind from the southwest-west at 15-30 mph, and a few flurries of snow are expected near Cooke City and West Yellowstone. The next measurable snowfall is expected Tuesday and Wednesday.

Two inches of new snow fell near Big Sky overnight, while the rest of the area stayed dry. Temperatures this morning are in the single digits and teens. Winds this morning are 15-20 mph out of the southwest and west (25 mph with gusts of 45 mph in the Bridger Range). Winds will increase this morning, especially north of Big Sky, blowing 25-35 mph with stronger gusts. Temperatures will rise into  the teens and low 20s F under partly sunny skies. Light snowfall is expected to begin tomorrow night.

In the mountains around Bozeman and Big Sky, 6-10” of snow fell since yesterday morning. Near West Yellowstone and Cooke City, only a trace to 3” fell. Winds are 10-20 mph out of the north and west with gusts of 25-40 mph. Temperatures are in the single digits F. Today will be partly sunny with highs in the teens F. Winds will continue out of the north and west at 10-20 mph. No new snow is expected.

Wow, what a surprise! Since yesterday morning, 8-9” fell in the mountains around Bozeman, 6” in Big Sky and Taylor Fork and 1-2” in Cooke City and West Yellowstone. Wind is blowing west to north at 5-15 mph with gusts of 25-40 mph. Temperatures are in the chilly single digits F. Throughout our forecast area wind will decrease and temperatures will not get much warmer. After a few lingering flurries, today will be a mix of clouds and sun.

Yesterday morning a trace to 1” of snow fell. Winds have calmed from the west to north at 5-15 mph, but in the Bridger Range it is blowing west at 25-39 mph. Mountain temperatures are in the single digits F this morning and will warm to the teens. Today will be snowy with 2-4” in the northern mountains and 1-2” in the southern ranges by tomorrow morning. Ridgetop wind will blow 20-30 mph from the west to north during the storm.

This morning, mountain temperatures are around 10 degrees F with 5 to 10 mph winds from the east to the north. One to three inches of new snow fell across the advisory area. Today, temperatures will be in the upper teens to low 20s F with 5 to 10 mph winds from the north to the west. Light snowfall will return to the area on Wednesday.

Since yesterday morning the mountains received 2-3” of snow from Big Sky to West Yellowstone, 1” near Cooke City, and zero elsewhere. This morning, light snow is falling, temperatures are teens to mid-20s F, and wind is southeast-east at 5-15 mph. In the Bridger Range, east wind is 20 mph with gusts to 35 mph. Today temperatures will be teens to low 20s F with east-northeast wind at 5-20 mph. Light snowfall will continue in most areas with 2-5” possible by tomorrow morning.

Since yesterday morning 1-2” of snow fell near Cooke City, the southern Madison Range and West Yellowstone with none elsewhere. Yesterday the wind was southerly at 20-30 mph with gusts of 50-65 mph. This morning southerly wind has decreased to 10-20 mph with gusts to 40 mph. Temperatures are teens to high 20s F this morning, and will reach high 20s to low 30s F today. Snowfall is expected in some areas through the day with 4-8” possible near West Yellowstone and the southern Madison Range, 2” near Cooke City and maybe 1” elsewhere.

There are 2” inches of new snow in Hyalite, 3-5” in the Bridger Range and around Big Sky, 6-7” near Cooke City and in the Taylor Fork, and 10” at Lionhead. Winds picked up overnight and are now blowing 15-30 mph with gusts up to 50 mph out of the southwest. Temperatures this morning are in the single digits and teens F. High temperatures today will be in the 20s F under cloudy skies. Moderate southwest winds with stronger gusts will continue today. Snowfall will start near West Yellowstone this afternoon with 1-3” possible by tomorrow morning while the rest of the area stays dry. A stronger round of snowfall tomorrow will again favor the southern areas. 

One inch of new snow fell around West Yellowstone yesterday, while the rest of the area remained dry. Temperatures this morning are in the single digits to mid-teens F with 10 to 25 mph winds from the south and west gusting 35-45 mph. Today, temperatures will rise to the upper teens to mid 20s F with moderate south and west winds continuing. Snowfall will begin this morning with 1-3 inches falling around Bozeman and 2-4 inches across the rest of the advisory area by this evening. Another round of snow is forecast to start tomorrow afternoon, again favoring the southern areas.