Advisory Archive
Today is the shortest day of the year. From this date forward we’re starting our climb toward summer, but with a forecasted high of 20F today I’m not digging out my flippity-flops just yet. Yesterday, strong west to southwest winds blew 30-40 mph before calming last night to 10-15 mph. Under clear skies mountain temperatures are near 10F. Some clouds will penetrate our southern mountains, but the next 24 hours will be a quiet weather pattern of light winds and no precipitation.
A fast moving storm deposited 10-12 inches of snow in the mountains around Cooke City and West Yellowstone totaling close to an inch of water. 4-5 inches has fallen in the mountains around Big Sky and 2-3 inches has accumulated in the Bridger and northern Gallatin Ranges. Winds are blowing constant at 15-25 mph out of the W-SW with stronger gusts reaching close to 50 mph. Mountain temperatures are ranging from the mid-teens to low twenties F. Today, snowy and windy conditions will persist with an additional 1-3 inches possible in the mountains by this evening. A ridge of high pressure will begin to build tonight into tomorrow bringing a break in the weather.
Over the past 24 hours 3-4 inches of new snow has fallen in the mountains around West Yellowstone and Cooke City while the northern ranges picked up 1-2 inches. Mountain temperatures are in the mid-teens to low twenties F and winds blowing out W-SW at 10-20 mph with a few gusts reaching into the 30’s. Southwest Montana will see a break in the weather this morning, but another wave of moisture will arrive into our area by this evening. Winds will increase throughout the day as this next storm system gets closer. The southern half of our advisory area will likely pick up an additional 4-6 inches by tomorrow morning while the northern half will pick up 3-4 inches.
This morning temperatures were only a few degrees above zero F and calm SW winds were blowing 5-10 mph with a few gusts reaching 20 mph. Things should change today as a strong Pacific storm system moves inland mostly through CA, NV and UT. Winds will increase to 15-30 mph from the SW and temperatures will reach the mid teens F. Snowfall should begin this afternoon with about 4 inches accumulating by tomorrow morning in the northern half of the advisory area and 4-6 inches in the southern half.
Yesterday’s weather made a perfect day to be outside, and today’s weather should bring more of the same except for cold temperatures. This morning southerly winds were blowing 10-15 mph, and mountain temperatures were near 0 degrees F except in the Bridger Range where temperatures were near 10 degrees F. With an inversion this morning some valley temperatures were much colder as in West Yellowstone where temperatures were -20 F. Today winds will remain mostly calm, skies will be mostly sunny, and temperatures will rise to the mid teens F.
No snow fell overnight. Temperatures dropped into the upper single digits F, and westerly winds this morning were blowing 5-15 mph. Today’s weather will be mostly dry, cold, and calm. Under partly sunny skies, temperatures will warm into the mid to upper teens F and calm winds will blow 5-10 mph.
A fast moving cold front and blizzard conditions moved through yesterday afternoon. Southwest winds were gusting to 70 mph as we got pelted by ball bearing shaped graupel snow. Two to three inches fell in the mountains around Bozeman, 3-5 inches near Big Sky, 7 inches in Taylor Fork and a foot near West Yellowstone and Cooke City. Temperatures are in the single digits and winds are west to southwest at 15-25 mph. Today will be beautiful with partly cloudy skies and temperatures reaching the high teens.
Yesterday morning an inch of wet snow fell over our forecast area with the mountains around Cooke City getting four inches. Mountain temperatures are hovering near freezing as winds pick up out of the southwest at 20-40 mph ahead of an approaching storm. Temperatures will drop to the upper teens tonight. Snowfall this afternoon and this evening will lay 4-6 inches in the southern mountains and 2-4 inches up north.
Much of our advisory area remained dry over the past 24 hours with the exception of Cooke City which picked up an additional 3-4 inches on snow since yesterday morning (Fisher Creek Snotel). Warm air has moved into southwest Montana in the wake of the yesterday’s storm producing night time lows that barley dipped below freezing. Currently, mountain temperatures are in the high 20°'s to low 30°’s F and winds are out of the W-SW at 15-25 mph. Cloudy and warm conditions will continue through the day with a slight chance of mountain snow showers. High temperatures will climb close to 40 F and winds will stay out of the W at 15-20 mph. An increasing chance of precipitation will arrive tomorrow.
A fast moving storm dropped 2-4 inches of snow over our advisory area last night, with the exception of Cooke City which picked up 5 inches (Fisher Creek Snotel). Ridgetop winds have been blowing 15-30 mph out of the W-NW, but decrease significantly with a drop in elevation. Mountain temperatures are ranging from the mid-teens to low twenties F and will rise into the 30’s by this afternoon. Precipitation will continue through this morning with additional accumulations of 1-2 inches possible. Ridgetop winds will stay steady through the morning hours, but both winds and precipitation will decrease by this afternoon. Mostly cloudy skies and warmer temperatures will persist through tomorrow.
