Advisory Archive

Over the past 24 hours 10-12 inches of snow fell in the northern Madison Range, 8 inches fell in the Bridger Range, 4-6 inches fell in the southern Madison Range and 1-2 inches fell in the mountains around West Yellowstone and Cooke City.  Currently, temperatures are in the single digits on Lone Mountain and 10-20 degrees elsewhere.  Winds are blowing 10-20 mph out of the WSW.  Today, cool temperatures will persist with highs reaching into the upper 20s to low 30s.  Winds will continue to blow 10-20 mph out of the WSW.  A building ridge of high pressure will produce clear and calm conditions through the day.  A warming trend will begin tomorrow and last through Wednesday.

Unbelievable!  Last night a cold winter storm dropped over two feet of cold smoke powder in the mountains around Bozeman and Big Sky.  The riding conditions should be some of the best of the year. April Fools!  In fact a warm spring storm dropped nearly an inch of rain in the northern Gallatin Range.  Most other areas picked up .2-.3 inches of rain.  Currently, mountain temperatures are in the upper 20s to low 30s and winds are blowing 20-30 mph out of the WSW with gust reaching into the 40s.  Today, temperatures will only warm a few degrees as a cold front moves over the region.  Valley rain and mountain snow will be likely through the day.  The southern mountains including Big Sky should pick up 3-5 inches of snow by this afternoon.  The mountains near Bozeman will pick up 2-4 inches.

Since yesterday morning 4-6 inches of high density snow totaling 1.2 inches of SWE fell in the mountains around Cooke City.  The Lionhead area and southern Madison Range picked up .7-.8 inches of SWE which fell as very dense snow or rain.  The mountains around Bozeman and Big Sky picked up a trace to one inch of snow. 

At 4 am this morning, mountain temperatures are in the mid to high 30s and winds are blowing out of the WSW at 20-40 mph.  Today, skies will be partly to mostly cloudy, temperatures will warm into the 40s and winds will continue to blow 15-30 mph out of the WSW.  Another storm will move into southwest Montana by tomorrow morning.  Valley rain and mountain snow can be expected through the day tomorrow. 

Since yesterday the mountains near West Yellowstone and Cooke City received 4 inches of snow, the Taylor Fork area received 2 inches, Hyalite received 1 inch, and all other areas were mostly dry.  Yesterday all areas remained below freezing except the Bridger Range which didn’t get too warm with a high temperature of 38 degrees F.  This morning temperatures in the Bridger Range were hovering near freezing while other areas had temperatures in the high 20s F.  Winds were blowing 10-20 mph from the W and SW with gusts of 40 mph.

Today will be mostly cloudy and temperatures will rise into the upper 30s F (40s F for the Bridger Range.  The mountains near Cooke City and West Yellowstone will get 6 inches of snow.  Mountains near Big Sky will get 2-3 inches and maybe only an inch near Bozeman.  Spring storms can be surprising, and I have little confidence in these snowfall amounts.  A lot more or a lot less could easily accumulate.

Overnight 1-2 inches of snow fell and temperatures dropped into the high teens to low 20’s F. This morning winds were blowing 5-10 mph from the SW with gusts of 20 mph. Today’s weather will bring a mix of clouds and sun with some precipitation this afternoon and tonight.   By afternoon winds will increase and blow 15-20 mph from the SW with gusts of 40 mph. Temperatures will climb into the high 30’s and low 40’s F. Another inch of snow should accumulate by tomorrow morning.

Yesterday was sunny with temperatures ranging from the high 20s near West Yellowstone to the low 40s in the Bridger Range.  Winds blew 15-30 mph out of the west, but calmed to 10-20 mph out of the southwest last night.  Clouds are streaming in from the southwest this morning and winds will increase slightly to 20-30 mph. Temperatures will be near 40F in the north and stay near freezing in the south.  In the mountains isolated showers will drop 1-2 inches of snow by tomorrow morning.

My, my, how fast things change.  The Bridger Range and mountains around Big Sky received 9-10 inches of snow last night, but not before a bit of rain fell at lower elevations.  The southern mountains received five inches and the northern Gallatins got an inch.  West winds are blowing 20-30 mph out of the west to southwest but will decrease to 10-20 mph today.  Mountain temperatures are currently reading in the upper teens to low 20s, twenty degrees colder than yesterday morning. Today will start cloudy, but turn sunny with mountain temperatures warming into the high 40’s in the north and high 30s in the south. No additional snow is predicted for the next 24 hours.  

This morning mountain temperatures are in the mid 30s to low 40s with the exception of Cooke City which is recording a cool 31 degrees F.  Skies are clear and winds are blowing 15-25 mph out of the SSW with gusts in Hyalite and Big Sky reaching over 40 mph.  Today, temperatures will only warm a few degrees and skies will become mostly cloudy by early afternoon as a cold front approaches from the west.  Winds will continue to blow 15-30 mph from the WSW with gusts reaching close to 50 as the front approaches.  Precipitation in the form of valley rain and mountain snow will move over the area by this evening.  2-4 inches of snow will likely fall above 7000 feet by tomorrow morning. 

At 4 am mountain temperatures are in the mid to high 30s F with the exception of the Madison Plateau Snotel site which is recording 29 degrees F.  Winds are blowing out of the SSW at 10-20 mph.  Today, a southerly flow will pump warm air into southwest Montana.  Daytime highs will range from the mid-40s to low 50s F.  Skies will be partly cloudy in the north and mostly cloudy in the mountains around West Yellowstone and Cooke City.   Winds will continue to blow 10-20 mph from the SSW.

This morning mountain temperatures are ranging between the upper 20s to low 30s F and winds are blowing 10-20 mph out of the SW.  Today, temperatures will warm into the mid-forties under partly cloudy skies and winds will continue to blow 10-20 mph out of the SW.