Advisory Archive
Winter is here. Since Monday night, the mountains from Bozeman to West Yellowstone received around 1.2 inches of snow water equivalent (SWE), giving us a snow depth up to 18 inches. Since Sunday, the mountains around Cooke City received 2.6 inches of SWE, bringing their snow depth to 26 inches. Southerly winds during the storm were moderate with gusts of 40 mph. The exception is the Bridger Range where winds were light and easterly. Temperatures this morning were in the high teens F in most mountain locations.
Winds over the next few days will be out of the west to northwest at 20 to 35 mph. Another 2-4 inches of snow is expected in the mountains around Bozeman and Big Sky Thursday night, with slightly larger amounts near Cooke City. This weekend will be dry with our next chance for precipitation early next week. Mountain temperatures over the next few days will be in the 20s F and reach the upper 30s F by Sunday.
Driving into Bozeman this morning it’s clear that snow levels dropped to around 6,000 ft. overnight. Although local Snotel sites aren’t showing much in the way of accumulation, I’m guessing a few inches of dense snow fell at higher elevations. In the mountains around Cooke City, Fisher Creek Snotel site is reporting three inches of accumulated snow. I wouldn’t be surprised if 4-6 inches fell at higher elevations in this area. Today, mountain snow showers will linger through the morning, but no real accumulation is expected. A weak ridge of high pressure begins to build this afternoon producing warmer and drier conditions for Wednesday. Another weak storm system could impact the area later in the week.
My oh my, a snowstorm. Yesterday afternoon the sky darkened, temperatures dropped, winds calmed and snow fell. This morning there are 5-6 inches in the mountains south of Bozeman to Big Sky and Carrot Basin. The Bridger Range and mountains around West Yellowstone and Cooke City got 1-2 inches. Scattered snowfall may add another inch or two before the storm exits later this morning. Winds are 10-20 mph out of the west to northwest and mountain temperatures range from 10-20F.
The rest of the week will be sunny with temperatures reaching the 50s in the mountains. The weekend and early next week will be slightly cooler and partly sunny, so enjoy the new snow while it’s here, because it will melt fast.
Overnight a trace of new snow fell in the mountains around Big Sky. This morning, temperatures range from the upper teens to mid-20s F under mostly clear skies and winds are blowing 10-20 mph out of the west. Today, high pressure will dominate the weather pattern producing mostly sunny skies and warmer temperatures. Highs will warm into the upper 30s to mid-40s F and winds will continue to blow 10-20 mph out of the W-SW. The ridge of high pressure begins to break down this evening as a storm approaches from the west. Tomorrow looks to be mostly cloudy with a chance of valley rain and mountain snow by the afternoon. 3-6” of snow will likely accumulate in the mountains by Wednesday morning.
A fast but potent storm system dropped 5-7” of snow overnight in the mountains around Big Sky and Cooke City including the northern Gallatin Range. The Bridger Range picked up 4-5” while the mountains around West Yellowstone squeezed out 2-3”. This morning, temperatures range from the mid-teens to low 20s F and winds are blowing 15-25 mph out of the west. Today, temperatures will warm into the upper 20s to mid-30s F under partly to mostly cloudy skies. Winds will continue to blow 15-25 mph out of the W-SW. A building ridge of high pressure will produce clearing skies and nicer weather tonight into tomorrow.
This morning temperatures were a few degrees below freezing at ridgetops. Winds increased overnight and were blowing 15-20 mph from the SW gusting 40 mph. Today winds will continue blowing 20-40 mph from the SW and high temperatures will be in the upper 30s F. Clouds will move over the area ahead of an approaching cold front. Snow will start falling late this afternoon and end tomorrow morning with 2-4 inches accumulating.
The mountains near Big Sky and Bozeman received a trace of snow yesterday afternoon. This morning temperatures were near 20 degrees F with winds blowing 10 mph gusting 20 mph from the SW. Today will be sunny with high temperatures near 40 degrees F and winds continuing 10-20 mph shifting to the W. Strong winds should arrive on Saturday followed by a little snowfall Saturday night.
This morning mountain temperatures were in the upper teens and low 20s F with winds blowing 2-8 mph from the S and E. Today will be mostly sunny with some clouds this afternoon. Temperatures will climb into the mid to high 30s F and winds will remain calm. A few snowflakes or raindrops may fall today mainly near West Yellowstone but no accumulation is expected until this weekend.
