Advisory Archive
In the past 24 hours 4-6 inches of new snow has fallen in the Northern Madison and Gallatin Ranges as well as the Bridger Range while 1-2 inches fell in the southern ranges. Winds have calmed significantly blowing at 5-15 mph out of the W-NW. This moist weather system will be pushed to the east by a building ridge of high pressure which will bring our area calm conditions and partly cloudy skies through the remainder of the day. Colder air will be associated with this ridge dropping temperatures into the twenties for highs and teens for lows. Another weak weather disturbance will move into southwest Montana early Monday morning brining cloudy skies and a chance of precipitation.
Since yesterday 20 inches of dense snow fell in the Bridger Range, 6-8 inches in the Gallatin and Madison Ranges and the mountains near Cooke City, and 3-5 inches near West Yellowstone. This morning it's still snowing with temperatures in the high teens to low 20s F and winds blowing hard at 15-30 mph generally from the west. Today will warm into the high 20s F with arctic air to the east moving this direction and limiting further warming. Winds should remain strong this morning and blow 10-20 mph from the west and northwest. By tomorrow morning an additional 1-3 inches of snow will accumulate mostly in the northern half of the advisory area.
Since yesterday 1-3 inches of snow fell in southwest Montana. This morning temperatures were in the mid to high teens F with winds blowing 10-20 mph mostly from the west. Once again winds increased yesterday afternoon and evening blowing as hard as 30 mph. Snowfall started this morning with about 1 inch of new snow. It will end this afternoon before resuming later tonight. By tomorrow morning another 2-4 inches will accumulate. Today high temperatures will reach the mid 20s F and winds will blow 15-25 mph from the west.
Yesterday morning the mountains near Big Sky, West Yellowstone, and Cooke City received about an inch of snow and winds increased in all areas blowing as hard as 30 mph. This morning temperatures were in the high single digits to low teens F with westerly ridgetop winds blowing 10-20 mph. Today cloudy skies will produce some snow with a bit more falling this evening. Temperatures will only climb to a high of 20 degrees F and winds will continue blowing from the west at 10-20 mph. By tomorrow morning 1-3 inches of snow will accumulate though more should fall Friday as well.
Under sunny skies temperatures remained cool and only rose into the teens before dropping to the single digits last night. Yesterday, strong west to southwest winds picked up, most notably in the northern mountains. They've been blowing 25-30 mph and will likely increase during the next 24 hours. Sunny skies will cloud up later today with temperatures reaching the low 20s. Tonight, scattered snow showers will drop a trace to one inch of new snow with flurries continuing tomorrow.
Although it was sunny in the mountains, the Gallatin Valley was under a low ceiling of clouds yesterday. These clouds and fog will persist until this afternoon when sunny skies will prevail. Mountain temperatures are in the single digits this morning but will warm into the low twenties. Ridgetop winds have picked up slightly and are blowing west to southwest at 15-20 mph. Under clearing skies there's no snowfall in the forecast until Thursday.
Clear and calm conditions with strong temperature inversions have settled over southwest Montana. Over the next 24 hours cold air trapped in the valleys will produce dense valley fog along with a few snow flurries. Spring like temperatures will be felt in the upper elevations with highs near freezing and lows in the teens. Valley temperatures will feel much more like winter with highs in the twenties and lows in the single digits. Winds will be calm today but will increase slightly out of the W-NW tonight and tomorrow.
In the past 24 hours 2-3 inches of new snow fell in the Bridger Range while the rest of the advisory area picked up an additional trace to one inch. Winds have been relatively light out of the W-NW blowing at 5-10 mph. Today, a weak ridge of high pressure will bring mostly sunny skies and calm conditions to southwest Montana. Temperatures will remain average for this time of year with highs in the upper 20's and lows in the teens. The ridge will begin to break down this evening, bringing a slight chance of snow showers tonight into Monday.
In the past 24 hours a moist southwest flow has deposited 2-3 inches of new snow over much of our advisory area. Winds have been blowing out of the W-SW at 10-15 mph but will shift throughout the day to a more W-NW flow. Currently temperatures are in the mid teens, but will rise into the low 30's by this afternoon. Light snow will continue to fall throughout the day bringing an additional 1-2 inches of new snow to our region. Cold air will follow this band of moisture, dropping temperatures into the low teens by tomorrow morning.
Yesterday, most areas received a meager 1 inch of snow. This morning with temperatures in the mid teens F, winds increased near Big Sky and were blowing 10-20 mph from the southwest while blowing 5-10 mph everywhere else. Today's weather shouldn't be too exciting even though satellite images show an approaching area of low pressure. A weak upper level ridge over southwest Montana will limit any precipitation today. By tomorrow another inch or two of snow will accumulate mostly in the southern half of the advisory area. Today temperatures will reach the mid 20's F with light southwest winds blowing 10-15 mph.