Advisory Archive

Over the past 24 hours 1-3 inches of snow fell in the mountains around Big Sky, West Yellowstone and Cooke City. The mountains around Bozeman picked up a trace to one inch. At 4 a.m. mountain temperatures are in the upper 20s to mid-30s F and winds are blowing 15-25 out of the WSW with ridge top gusts reaching 50 mph in Hyalite and Big Sky.

Today, an active weather pattern will remain in place as a strong storm system pushes in from the west. Precipitation will start this morning producing valley rain and mountain snow. Temperatures will be the warmest before noon, but will gradually drop through the day. Snow levels should reach the valley floor by late afternoon.  Winds will gradually shift to the NW which will favor the northern mountains with snowfall amounts. The mountains around Bozeman, Big Sky and Cooke City should see 8-10 inches of new snow by tomorrow morning. The southern Mountains will likely pick up 4-6 inches.

At 4 a.m. temperatures are in the high 20s to mid-30s F and winds are blowing 15-25 mph out of the WSW with ridge top gusts reaching close to 50 mph. Today, temperatures will remain above average with highs in the upper 30s to low 40s F. Winds will continue to blow 20-30 mph out of the WSW with ridge top gusts reaching close to 50 mph. Skies will remain mostly cloudy as a strong westerly flow pushes moisture into the area. Precipitation is unlikely today, but a developing low pressure system will increase the chance of precipitation tonight and tomorrow. A few inches of snow are possible by tomorrow morning with up to a foot possible by Tuesday morning.     

Overnight no new snow fell. This morning temperatures are in the upper teens to low 20s F and winds are blowing 10-25 out of the WSW. Today, skies will be mostly clear and temperatures will warm into the high 30s to low 40s F. Winds will blow 10-25 out of the WSW this morning, but will gradually increase with ridge top gusts reaching 40 mph by this afternoon. The current ridge of high pressure will begin to break down this evening and skies will become mostly cloudy by tomorrow morning. However, no precipitation is expected over the next 24 hours.

Yesterday the Bridger Range received 10 inches of heavy snow (15% density) and all other areas received 4-6 inches of similar snow. Low elevation areas received some rain. Temperatures this morning were in the 20s F. Ridge top winds yesterday were blowing 20-30 mph with some gusts of 50 mph. This morning winds had eased and were blowing westerly 10-15 mph gusting to 25 mph. Today temperatures should warm to near 30 F and by afternoon winds should ease a bit more. About 1 inch of new snow should fall today.

Over the past 24 hours the mountains around Cooke City picked up .8 inches of SWE (snow water equivalent) totaling 6-8 inches of high density snow. The mountains around West Yellowstone and Big Sky received .2-.3 inches of SWE equaling a few inches of snow while the mountains around Bozeman picked up a trace to one inch of snow.

This morning temperatures are a few degrees above or below freezing with Brackett Creek Snotel site being the warmest at 39 degrees F. Winds are strongest in the Hyalite area and mountains around Big Sky. Hyalite weather station is recording gusts close to 70 mph while Big Sky is showing gusts around 50 mph out of the WSW. The rest of the advisory area is looking at winds of 10-20 mph with gusts around 30 mph.  Today, winds will remain strong out of the WSW and temperatures will warm into the mid to high 30s F. An active weather pattern will make snow showers likely in the mountains around Cooke City and West Yellowstone where an additional 1-3 inches is possible. The northern ranges could see a trace to one inch by this afternoon. Tonight and tomorrow look to be warm, windy and dry.

In the last 24 hours no snow fell except about an inch that fell near Cooke City yesterday morning. This morning temperatures were in the mid 20s F and ridge top winds were averaging 15-20 mph gusting to 30 mph from the W and SW. Today’s weather will be warm and windy with temperatures that should warm into the low 30s F. By this afternoon winds should increase to 20-50 mph from the S and SW. Snowfall will return late this afternoon mostly in the southern areas which should get 5 inches while the northern areas should get 1-2 inches.

Over the past 24 hours the mountains around Cooke City have received 1.1 inches SWE (snow water equivalent) totaling close to a foot of new snow. The mountains around West Yellowstone have picked up .6 inches of SWE while the mountains around Bozeman and Big Sky picked up .4 inches of SWE.

At 4 a.m. temperatures are in the 20s F and winds are blowing 10-20 out of the WSW with ridge top gusts reaching over 30 mph. Today, skies will be partly to mostly cloudy under a moist westerly flow. Temperatures will warm into the mid to upper 30s F and winds will remain light to moderate out of the WSW. Precipitation will be limited to the southern mountains where an additional 1-2 inches is possible this morning. Conditions will dry out this afternoon and a quiet weather pattern will prevail for the next 24 hours. Not to worry though – another potent storm system is forecasted to impact the area Wednesday night into Thursday.

Yesterday, the sun poked out for a few hours but was quickly obscured as another round of moisture pushed in from the west. Overnight, the mountains around Cooke City and West Yellowstone including the southern Madison Range picked up 5-8 inches of new snow. The Bridger Range picked up 4-6 inches while the mountains around Big Sky picked up 1-2 inches.

Currently, temperatures are balmy with the mercury pushing into the mid to upper twenties in most locations. Winds are blowing 10-20 mph out of the WSW with ridge top gusts pushing 40 mph in Hyalite and Big Sky. Today, a moist westerly flow will keep skies mostly cloudy and the southern mountains will pick up an additional 1-3 inches. Today, temperatures will warm into the low thirties F and winds will continue to blow 15-25 out of the WSW. An unsettled weather pattern will continue over the next few days with more snow likely in the mountains around Cooke City and West Yellowstone.

Skies got very bright in Bozeman yesterday as if there were some sort of bright object in the sky. I’m not sure what it was nor will I find out because more clouds and snow are coming today. Yesterday the mountains near Cooke City and West Yellowstone received 2-4 inches of snow and the mountains near Bozeman and Big Sky received a trace to 1 inch. Cold air moved east this morning and mountain temperatures were in the low to mid teens F with valley locations near or below 0 F. Winds were blowing 10-15 mph gusting to 25 mph from the S and SW. Today temperatures will be in the 20s F and winds will blow 15 mph gusting to 25 mph from the SW. The northern mountains should get 2-4 inches while the southern mountains should get 5-7 inches.

Crazy weather this morning. Temperatures range from -20 F in the Bridger Range to -10F in Big Sky to +21 F on Lionhead near West Yellowstone. The mountains near Bozeman and Big Sky received 1-3 inches of snow since yesterday, near West Yellowstone 7 inches, near Cooke City 10 inches. Believe it or not, winds in the mountains are blowing less than they are in some valley locations. Most mountain weather stations have winds blowing 10 mph gusting 15-25 mph from the SW; however, the Bridger Range has a very cold E wind.

Today temperatures shouldn’t change much and late today winds should shift to the W and slowly start pushing this stationary cold front out of the area. There should be a little warming tomorrow and much warmer temperatures by Monday. Cooke City may get a few inches of snow today while the rest of the area should see snow but little accumulation. A better chance of snow returns sometime Sunday mainly for the southern areas