Advisory Archive

Yesterday some snow fell in most areas with the mountains near Big Sky and Bozeman getting 2-4 inches. Further south a trace to 2 inches fell. More importantly, the strongest winds blew yesterday morning to midday from the NW at 15 mph gusting to 40 mph.

This morning temperatures are hovering near 10 degrees F. Winds are blowing 8-18 mph from the W and NW gusting in the low 20s. Skies are mostly clear.

Today clouds will increase as moisture moves over the area. Temperatures should warm into the low 20s F. Winds will slowly shift direction and blow from the SW but not increase in speed. Tonight a few more inches of snow should fall.

WIND is really driving the avalanche danger now (especially with so much powder available to drift) and it looks like we’ll have a few days without much wind. Strong winds will blow in northern and central Montana tomorrow and Friday which could affect the Bridger Range. Otherwise, the next significant wind may not arrive until Sunday.

Storm totals since Valentine’s day are impressive (weather log): 

• Bridger Range - 37” of snow (3.2” SWE)
• Big Sky - 46” of snow (2.3” SWE)
• Gallatin Range, S. Madison Range, Cooke City, Island Park and West Yellowstone - 17-27” (1.6-2.2” SWE)

This morning, snowfall continues with temperatures in the single digits to teens F and 10-20 mph winds from the west through the north.

24-hour snowfall totals:

• Bridger, Northern Gallatin and Northern Madison Ranges - 8-12” (0.5-0.9” of snow water equivalent - SWE)
• Cooke City, West Yellowstone and Island Park - 4-6” (0.3-0.6” SWE)

Storm totals since Thursday night are impressive (weather log):

• Bridger Range - 36” of snow (3.1” SWE)
• Big Sky - 43” of snow (2.1” SWE)
• Gallatin Range, S. Madison Range, Cooke City, Island Park and West Yellowstone - 16-25” (1.5-1.9” SWE)

Today, snowfall will taper off in the middle of the day, but not before another 2-4” falls across the advisory area. High temperatures will be in the teens to low 20s F with 10-20 mph winds from the west and northwest.

Snowfall totals since yesterday morning are:

• 5-11” (0.4-1.2” SWE) in the Bridger Range, Big Sky and Cooke City.
• 4-6” (0.3-0.5” SWE)  in Hyalite, Taylor Fork, West Yellowstone and Island Park.

Temperatures are teens to 20s F this morning and will reach teens and 20s F today. Wind has been from the west and southwest at 10-20 mph with gusts of 20-40 mph. Today the wind will be light to moderate out of the west at 10-25 mph. Snowfall is forecast through tomorrow morning with 5-8” possible near Bozeman, Big Sky and Cooke City and 2-5” near West Yellowstone and Island Park.

This morning, mountain temperatures are in the single digits to teens F with 10-20 mph winds from the west and northwest. Snowfall increased early this morning, with 2-5” of low-density snow in the last 24 hours, with 6” in the Bridger Range. 

Today, high temperatures will be in the teens to low 20s F, with 10-20 mph winds from the west and southwest. By Monday morning, we will see 6-12” of new snow favoring the mountains around Bozeman and Big Sky.

Snowfall started yesterday afternoon and ramped up overnight, with:

8-17” (0.6-0.9” Snow Water Equivalent) near Big Sky

5-7” (0.5-0.7” SWE) near Bozeman

3-4” (0.2-0.3” SWE) near West Yellowstone, Island Park and Cooke City

Winds are 10-15 mph out of the west and northwest, with 20-30 mph gusts. Temperatures are in the teens F. 

Snowfall is wrapping up this morning. Winds will remain light out of the northwest and west. The sun may pop out from behind the clouds in places today, but it’ll generally stay cloudy before snowfall starts up again tonight. By tomorrow morning expect 2-4” around Bozeman and 1-3” across the rest of the advisory area. It’ll keep snowing through tomorrow and into Monday.

This morning, there are:

2-3” of new snow around Island Park, West Yellowstone, and Cooke City

0-1” around Bozeman and Big Sky

Winds are 15-25 mph out of the south and west, with 30-40 mph gusts. Temperatures are in the teens and 20s F (20+ degrees F warmer than yesterday morning!). 

Snowfall today and tonight will bring 3-6” more new snow by tomorrow morning. Winds will remain moderate out of the south and west. High temperatures will be in the 20s F.

Cold air is on its way out, but increased winds and snowfall are on their way in.

Temperatures this morning are -5 to -13 degrees F which is five to ten degrees warmer than yesterday, but wind chills will keep things feeling quite cold. Winds increased yesterday afternoon, and are blowing 15-20 mph from the west this morning with higher gusts. Skies are clear this morning.

A trough of low pressure (a storm) is hitting the northern CA coast this morning and will move across Nevada and Utah today. For us, this means increasing clouds and winds from the south. The Pocatello NWS office has issued a winter storm warning for the Island Park area starting at 11am today.

Today as skies become cloudy, wind gusts will reach 30-40 mph from the south. Temperatures are supposed to rise into the mid teens F, but I bet they’ll be stubborn and remain quite cold for much of the day. By tomorrow morning, areas near Island Park and West Yellowstone could have 2-5 inches of snow while all other areas should have about an inch. More snow falls through the weekend and into next week

COLD! Temperatures are -15° F to -23° F which is colder than yesterday morning. Fortunately light winds are only blowing about 5 mph from the north.

Clear skies and sunshine will help temperatures climb to near zero F. Bone chilling winds will increase today with some gusts approaching 20 mph. Some downhill winds blew yesterday in the Bridgers and could blow again today and move some snow.

Warmer air moves into the area tomorrow morning as a deep trough of low pressure nears the California coast bringing winds from the SW. Starting Thursday night snow is in the forecast everyday for the next week. After that trough moves over the western U.S., we will be under a wet, westerly flow with no major storms but steady snowfall.

This morning, mountain temperatures are in the negative single digits to negative teens F, with light winds from the west and northwest. The mountains in Island Park got 2” of snow, with a trace to one inch elsewhere.

Today, high temperatures will be around 0 F, with 5-10 mph winds from the west through the north. Plan for a couple of cold days. The Arctic blast breaks on Thursday, and snow returns on Thursday night.

Yesterday snow favored the Bridger Range with 6” of low density snow, 1” fell in Hyalite and Big Sky, and zero to a trace near Cooke City, West Yellowstone and Island Park. 

Wind was out of the west to southwest at 10-15 mph with gusts of 25-40, and this morning wind is shifting to the northwest and north at 5-15 mph. Temperatures are single digits above and below zero F.

Today, scattered cloud cover will bring a few flurries of snow with light west-northwest wind. Temperatures will reach low single digits above zero F before dropping to teens below zero overnight.