Advisory Archive
Since yesterday morning two inches of snow fell from Big Sky to West Yellowstone with Cooke City getting four inches. Mountain temperatures are in the upper teens, just a few degrees colder than yesterday’s high. Wind is the weather story. West to southwest winds started blowing yesterday morning and are averaging 25 mph with gusts to 68 mph. Mid slope anemometers are showing winds raking all elevations. These speeds will decrease to 20-30 mph later this morning. In the next 24 hours, under mostly cloudy skies mountain temperatures will climb only a few degrees with little chance of snowfall.
Over the past 24 hours 1-2 inches of new snow fell in most areas. Mountain temperatures are on the cool side ranging from the single digits to low teens F. Winds have started to pick up - blowing out of the W-SW at 15-30 mph with gusts in Hyalite and Big Sky reaching into the 40’s. Winds will continue to increase throughout the day with gusts reaching upwards of 60 mph by this afternoon. Temperatures will climb into the 20’s under mostly cloudy skies. A cold front will arrive this evening bringing with it cooler temps and light precipitation. 1-3 inches will accumulate in the mountains by tomorrow morning.
Overnight a trace of new snow fell in the mountains south of Bozeman. Currently, mountain temperatures are ranging from the single digits above or below zero with Shower Falls Snotel site in the northern Gallatin Range being the warm spot at 13 F. Winds have calmed since yesterday afternoon and are now blowing 10-20 mph out of the W-NW with a few gust reaching into the 30’s. Today, a westerly flow will keep skies partly to mostly cloudy producing a slight chance of mountain snow showers this afternoon. Temperatures will warm into the 20’s and winds will stay out of the west at 10-20 mph. 2-3” of new snow is possible by tomorrow morning.
No snow fell in the last 24 hours. This morning temperatures dropped into the negative single digits F, and in some valley locations temperatures dropped into the negative teens. Winds were mostly calm yesterday and last night but increased this morning to 20-40 mph from the W and SW. Today winds will continue and maybe increase a bit more. Fortunately more sunshine is expected and high temperatures in the upper teens F. Clouds may return Sunday and more snowfall should come early next week.
Since yesterday only 1-2 inches of snow fell in the mountains near Cooke City and West Yellowstone while all other areas were dry. Winds this morning were blowing 10-20 mph from the WSW and mountain temperatures were in the negative single digits F. In most places valley temperatures were about 10 degrees colder. Winds will be relatively calm today blowing westerly at 10-15 mph, and high temperatures will struggle to approach +10F. Only a trace-1 inch of snow will fall near Cooke City and West Yellowstone while more significant snowfall rolls through Wyoming and Utah. Saturday looks like it will be a relatively nice day in the mountains with light winds, some sunshine and high temperatures near 20F.
Since yesterday morning the mountains near Cooke City and West Yellowstone received 2-4 inches of snow while mountains near Bozeman and Big Sky received only a trace to 1 inch. Winds calmed overnight and were blowing 10-15 mph from the SW this morning with temperatures near 0F. The Bridger Range is the exception where cold E winds helped drop temperatures to -12F.
Today the weather will change little with more cold temperatures and more snow. High temperatures will only be a few degrees warmer than they were this morning. Fortunately winds shouldn’t change much and remain relatively calm. With a cold, dry E wind in the Bridgers, I don’t expect much snow in that range. Most other areas will receive 3-6 inches by tomorrow morning.
Since yesterday morning the southern mountains picked up five to seven inches of snow while the northern ranges got two inches. With mountain temperatures in the single digits, westerly winds are averaging 15 mph with gusts to 30 mph. Today will be mostly cloudy with a few flurries and temperatures only rising to near 10F. Tonight the mountains should get two to four inches of new snow with light southwest winds and temperatures dropping near zero.
Yesterday morning another one to two inches fell in most ranges, but snow showers outside West Yellowstone dropped five inches of new snow. Winds are increasing out of the west to southwest and are currently blowing 20-35 mph with temperatures in the single digits. A storm is slated to arrive early this afternoon and last into Thursday. In the next 24 hours I expect six to eight inches of new snow in the mountains with strong westerly winds and temperatures only rising into the high teens before dropping to the low single digits tonight.
A surprise storm has hammered the Bridger Range, depositing 14” of cold smoke powder over the past 24 hours, and it’s still snowing! Cooke City is the runner up receiving 6-8 inches over the past 24 hours while the mountains around West Yellowstone and Big Sky including the northern Gallatin Range have picked up 3-4 inches. Ridgetop winds are strongest in the Bridger Range blowing 30-40 mph out of the W; the rest of our advisory area is receiving winds out of the WNW at 15-30 mph. Temperatures are ranging from the single digits in the north to the low teens in the south. Today, winds will continue to blow 15-30 mph shifting to the WSW and temperatures will climb into the 20’s. Snow will likely taper off by early afternoon and skies will become partly to mostly cloudy. No major accumulations are expected over the next 24 hours.
A closed Low over Wyoming has produced east winds throughout our advisory area limiting snow accumulations. Over the past 24 hours, 3-4 inches of low density snow has fallen in the southern ranges while a Tr-1” has fallen in the north. Temperatures are much colder in the mountains around Bozeman with Bridger Bowl recording the lowest temperature of -7 F. Conditions warm steadily farther south. West Yellowstone is the warm spot at 21 F while the mountains around Big Sky and Cooke City are recording temps around 10 F. Currently, winds are blowing out of the SSE at 5-15 mph and should gradually switch to more westerly flow by this afternoon. Today, temperatures will struggle into the single digits in the north and low 20s in the south. Another 2-3 inches will fall in the mountains around West Yellowstone and Cooke City while the north will pick up an inch or two.
