Advisory Archive
A strong ridge of high pressure has parked over southwest Montana and put the e-brake on, eliminating any chance of precipitation. Temperatures have been spring like over the past 24 hours, with above average highs in the 40's F and lows in the 20's F. Light winds out of the S-SW at 5-10 mph were actually welcomed to help offset the warm temperatures in the upper elevations. Today will be even warmer than yesterday with highs reaching almost 50 degrees F and lows barely dropping below freezing. Winds will remain light out of the S-SW at 5-15 mph.
A split jet stream has diverted energy from a strong pacific low to the north and south of Montana leaving our area in a cloudy but dry doughnut hole. Although we are picking up residual pieces of energy from this strong pacific storm, only a trace of new snow has fallen over the southern portion of our advisory area in the past 24 hours. Today, temperatures will remain above average with highs in the 40's and lows in the 20's and winds will stay fairly light out of the S-SW at 10-15 mph. We can expect to see clearing skies and more warm temps by tomorrow.
This morning temperatures were near 20 degrees F and winds were blowing 10-20 mph from the south; however, overnight these winds blew 20-30 mph near Big Sky. Moisture will stream across the southern Rockies sending clouds and very little measurable precipitation to southwest Montana. A few snowflakes will fall today mostly south of Bozeman with no more than 1 inch accumulating by tomorrow. Today temperatures will rise to near 30 degrees F and winds will blow from the south at 10-20 mph.
In the past 24 hours the northern Gallatin Range and the mountains around Cooke City received one inch of snow while all other areas received a trace or remained dry. Under clear skies this morning temperatures dropped to the low teens F and westerly ridgetop winds were blowing 10-20 mph. Today will have a mix of sun and clouds but no precipitation. With winds blowing 10-15 mph from the southwest, temperatures should gradually rise and reach the hi 20s F by this afternoon. Some precipitation may come this weekend, but it doesn't look like much as most of the moisture hitting the west coast will travel well south of Montana.
Since yesterday the northern Gallatin and northern Madison Ranges received 4 inches of snow while all other areas received about 2 inches. This morning snowfall ended with temperatures in the mid to upper teens F and ridgetop winds blowing 10-20 mph from the west. Today mostly cloudy skies will produce scattered snow showers, but only a trace to 1 inch of snow will accumulate. Highs will reach the upper 20s, and winds should decrease and blow 10-15 mph from the west.
Yesterday the mountains saw lots of sun, decreasing W-SW winds and daytime highs in the upper 20s. The high pressure has broken down and today we'll be under mostly cloudy skies with scattered snow showers by this afternoon. Winds will remain moderate from the SW at 15-20 mph. Temperatures this morning are in the high teens and will warm into the upper 20s again. By tomorrow morning I expect 2-3 inches of new snow in the mountains.
Sunny skies will dominate our weather today before a few clouds roll in later tonight. Mountain temperatures are in the teens this morning which are not much colder than yesterday's highs, although readings near West Yellowstone and Cooke City are in the chilly single digits. Winds picked up yesterday morning out of the west and are still blowing 20-35 mph. Today, temperatures will only reach the high teens with steady ridgetop winds.
A strong ridge of high pressure has moved into southwest Montana creating clear, calm, and cold conditions. Currently temperatures are in the single digits above or below zero with ridgeline winds picking up to 15-25 mph out of N-NW. This dominating ridge of high pressure will remain over our area for the remainder of the day making for clear skis and beautiful winter weather.
A weak upper level trough continues to pump cold air and light bands of moisture into southwest Montana. During the past 24 hours a trace to one inch of new snow has fallen over much of our advisory area with light winds out of the N-NE at 5-10 mph. Today, this upper level low will move to the east giving way to clear skies and cold conditions. Temperatures will struggle into the teens for highs and lows will be in the single digits above or below zero. Calm and clear conditions will persist throughout the day and into tomorrow.
A cold arctic air mass parked over Montana has brought 1-2 inches of new snow to our advisory area over the past 24 hours. Today will deliver much of the same with mountain snow showers depositing an additional 1-2 inches by this evening. Winds will be light out of the north at 5-10 mph and temperatures will remain cold with highs in the upper teens and lows in the single digits F.