Advisory Archive

Yesterday, strong winds blew from the W and NW. No snow fell but winds easily moved the snow that fell on Monday. 

This morning, winds increased in most areas blowing 15-20 mph and gusting 25-40 from the W and SW. Winds in the Bridger Range remain similar at the ridge, but low elevation winds decreased significantly from yesterday. Temperatures in the Bridger Range are mostly in the 20s F, near Hyalite and Big Sky they are in the mid-teens F, and near Cooke City and West Yellowstone they are in the single digits F.

Today, clouds will increase throughout the day, and winds will slowly decrease. Temperatures may only rise by about five degrees from where they are this morning. A few snowflakes may dance in the air with no accumulations.

The rest of the week will have somewhat similar weather until a storm rolls over the area Sunday and Monday. Snowfall from this storm should favor mountains near West Yellowstone and Island Park.

This morning, mountain temperatures are in the single digits to teens F. Winds are blowing 15-25 mph from the west to northwest in the mountains around Bozeman and Big Sky, and 5 to 15 mph elsewhere.

24 Hour Snow Totals:

• Bridger and N. Gallatin Ranges: 2-3” (0.1” snow water equivalent - SWE)
• Big Sky, West Yellowstone, Island Park and Cooke City: Trace to 1” (0-0.1” SWE)

Today, high temperatures will be in the teens to 20s F with 5-15 mph winds from the west to southwest. Stronger winds will continue near Bozeman. The mountains will get a trace of snow by tomorrow morning.

This morning, mountain temperatures are in the single digits to teens F with 5-15 mph winds from the north to the west.

24-Hour Snow Totals:

• North Gallatin Range: 10” with 0.8 of snow water equivalent (SWE)
• Bridger and N. Madison Ranges: 3-4” (0.2-0.3” SWE)
• West Yellowstone, Island Park, and Cooke City: 0-1” (up to 0.1” SWE)

Today, temperatures will reach the teens to low 20s F with 10-15 mph winds from the northwest to the southwest. The mountains around Bozeman and Big Sky will receive an additional 1-4” of snow, with Hyalite Canyon remaining in the spotlight. The mountains around Cooke City, West Yellowstone and Island Park will get up to an inch.

0800 UPDATE: It is snowing hard in the Bridger Range. Since publishing the forecast 1 hour ago, 2-3" of light snow fell. Stay heads up for evolving conditions if intense snowfall continues. 

Cold air is moving into our region this morning. At 6am, temperatures are teens to 20s F, and there is 1-2” of new snow near Cooke City, Big Sky, West Yellowstone and Island Park with no snow in the Bridger Range and Hyalite. Winds are strong at 10-30 mph with gusts of 40-75 mph out of the southwest-northwest. Today, temperatures will drop to the 20s and teens F with moderate to strong wind out of the west-northwest. More snow will fall this afternoon through tomorrow. By tomorrow morning the mountains near Bozeman could receive 6-12” of low density snow with 3-6” elsewhere.

This morning temperatures are high 20s to low 30s F. Today temperatures will reach 30s to low 40s F under partly sunny skies. Wind will continue out of the west at 10-25 mph. A cold front will arrive late tonight with temperatures dropping to teens and 20s F and westerly wind at 20-35 mph. Snowfall overnight could produce 1-3” by tomorrow morning with an additional 3-5” possible tomorrow night.

This morning, temperatures are inverted, with mountain temperatures (20s to low 30s F) warmer than valley temps (as low as 6 F in West Yellowstone). Winds are 5-15 mph out of the west and northwest with gusts up to 30 mph. There is no new snow.

Today, skies will be sunny, winds moderate out of the west, and temperatures will rise into the 30s F.

Snowfall is expected to begin tomorrow (Saturday) night.

This morning under clear skies,  temps are mostly in the upper 20s F, and winds from the W & NW are averaging 5-10 mph with gusts up to 20 mph. 

Today will have more warm beautiful weather with mild temps rising into the low to mid 30s F at upper elevations. Winds will be decreasing and barely blowing by afternoon.

This weekend a trough of low pressure will descend over Montana bringing cold air and snowfall on Sunday. At the moment, forecast models are only showing brief ridging (aka warm & dry weather) in the middle of next week followed by a series of troughs (aka storms) rolling across the western U.S. The main point is that there are no large ridges of high pressure in the long term forecast which is promising.

Weather this morning and for today is generally a repeat of yesterday. Temperatures this morning range from the mid 20s to low 30s F. Winds from the NW are blowing 10-15 mph gusting to 30 mph. 

Today high temperatures will range from low 30s to low 40s F depending on elevation. Winds will continue from the NW but will be decreasing. Looking ahead, the ridge of high pressure creating dry and warm conditions breaks down this weekend and snowfall should return on Sunday.

At 4am temperatures are near or above freezing (30-34 F) at ridgeline weather stations and mid-20s F in most valleys with 46 F at the base of Bridger, and mids-20s F in Cooke City. Wind has been moderate out of the west at 10-15 mph with gusts of 20-35 mph. Today, skies will be clear with temperatures in the mid-40s near Bozeman and Big Sky and high 30s F near West Yellowstone, Island Park and Cooke City. Wind will be out of the west at 5-15 mph with a few moderate gusts. The rest of the week looks similar with a slight cooling trend, and the next chance for snow is this weekend.

This morning, mountain temperatures are near 30 degrees F in the northern forecast area and around 20 degrees F in West Yellowstone, Island Park and Cooke City. The winds are 5-15 mph from the west to the north.

Today, high temperatures around Bozeman and Big Sky will reach 40 F, with cooler temperatures in the southern portions of the advisory area. Winds will be 5-15 mph from the west to southwest, and skies will be mostly sunny.