Advisory Archive
Skies were cloudy yesterday but no snow fell. Today’s weather should be similar though some snowfall may start this afternoon. Winds in most areas were SSW 10-20 mph, except on Lone Mountain and ridgetops in Hyalite where they were 20-40 mph. Temperatures were in the mid teens F to low 20s F. Today temperatures shouldn’t rise much and most areas will see highs in the mid 20s F with winds blowing 15-30 mph from the SSW. By tomorrow morning only 1-2 inches of snow should accumulate in the southern areas while the northern areas will receive a trace-1 inch.
Low level moisture and lingering instabilities yesterday produced an additional 1-2 inches of snow in the mountains near Big Sky and Bozeman. Further south 2-3 inches fell. Winds shifted to the S and SW blowing 15-30 mph this morning with temperatures in the low teens F. In Hyalite Canyon ridgetop winds were blowing 30-45 mph. A brief ridge of high pressure will provide mostly sunny skies with temperatures around 32 F though it should feel warmer. Winds will continue S and SW at 15-30 mph. Light snowfall should start tomorrow morning with a bit more coming tomorrow evening.
Last night the snow kept falling and temperatures dropped. In the past 24 hours, 17 inches fell near Cooke City and West Yellowstone, 12 inches near Big Sky and Hyalite Canyon, and 9 inches near Bridger. Although winds eased yesterday afternoon, they increased overnight and were blowing 10-30 mph from the western half of the compass this morning. Temperatures, which have been close to freezing in recent days, dropped to the teens F. Today, temperatures will rise into the low to mid 20s F and westerly winds will blow 5-15 mph. Light snowfall may linger but the storm has ended with dry air pushing into SW Montana this morning.
In the last 24 hours 16 inches of snow has fallen in the southern Madison Range and a foot near Cooke City. Moonlight Basin received seven inches while two to three inches fell in Hyalite and the Bridger Range. The storm is not done. Westerly winds are averaging 20-30 mph with gusts hitting 60 mph. Mountain temperatures are in the high 20s. Today I expect 8-12 inches in the southern mountains and 4-6 inches in the northern ranges as winds slightly abate and temperatures drop into the low 20s.
Yesterday morning, three to four inches of snow fell in the mountains from Big Sky to the Bridger Range. In the southern half of our region, six to seven inches accumulated. With temperatures in the upper teens, winds are blowing from the west to southwest at 20-30 mph with gusts near 40 mph. Today will be partly cloudy with mountain temperatures reaching the high 20s as wind speeds increase out of the southwest. More snow tonight will measure three to five inches in the north and five to eight inches down south by sunrise.
Warm and windy conditions are covering our forecast area. Currently, winds are blowing out of the WSW at 25-35 mph with gusts in Hyalite and Big Sky reaching over 50 mph. Mountain temperatures are currently in the high 20’s F and will warm into the 30’s F by this afternoon. Winds will continue to blow out of the WSW at 20-40 mph through the morning hours, but will gradually decrease by this evening. A weak weather disturbance will arrive by early afternoon depositing 2-3 inches of snow in the south and 1-2 inches in the north. A ridge of high pressure will build tonight into tomorrow making for a nice day on Tuesday.
Over the past 12 hours a trace of new snow has fallen in most areas. Currently, winds are blowing out of the WSW at 5-20 mph and mountain temperatures are in the high teens to low 20’s F. Today, plenty of sunshine will warm temperatures into the 30’s F and winds will continue to blow out of the WSW at 10-20 mph. Clouds and wind will gradually increase by this evening as a storm pushes into the Pacific Northwest. A better chance of moisture will arrive tomorrow afternoon.
Overnight a trace to one inch of snow fell over much of our forecast area. Currently, winds are blowing out of the WSW at 5-15 mph and mountain temperatures are in the high single digits to low teens F. Today, mountain temperatures will warm into the high 20’s to low 30’s F and winds will stay light out of the WSW at 5-15 mph. Skies will be partly cloudy this morning, but will gradually become mostly cloudy by this afternoon. A slight chance of mountain snow showers will arrive later tonight. 1-2 inches is possible in the mountains by tomorrow morning.
Last night’s powerful storm delivered more strong winds, snowfall, and some lightning. 7 inches of snow fell near Cooke City and West Yellowstone, 4-5 inches in the Gallatin and Madison Ranges, and 2 inches in the Bridger Range. Yesterday S and SW winds blew 30-40 mph with gust of 70-80 mph. As snowfall started around 9pm, temperatures were near freezing and winds shifted to the W at similar speeds. This morning W winds were blowing 20-40 mph and temperatures had dropped into the teens.
Today, temperatures will rise into the mid 20s F and W winds slowly decrease to 10-20 mph. Skies should have a mix of sun and clouds, and a trace of snow may fall in the southern half of the advisory area. More snowfall should come Saturday evening.
Since yesterday 2-3 inches of snow fell in the mountains near Cooke City, West Yellowstone, and the Taylor Fork drainage. Winds will dominate today’s weather. They increased last night and were blowing 20-40 mph from the SW this morning. Today winds will increase with gusts reaching 50 mph. Temperatures were in the mid 20s F this morning and should climb into the mid 30s F today. A Pacific storm driving these winds will bring more snow starting this evening and ending tomorrow morning. 5-7 inches should fall near Cooke City and West Yellowstone, 3-5 inches near Big Sky, and 2-3 inches near Bozeman.