Advisory Archive
Temperatures are near twenty degrees under clear skies this morning. Winds are west to southwest at 15-25 mph. Today will be sunny and warm with mountain temperatures reaching the high thirties by midafternoon. Winds will remain moderate and tonight will be clear again. Today is a skin burning SPF 50 type of day.
Under clear skies temperatures are in the teens with west to southwest winds averaging 15-20 mph and gusting to 30 mph. Today will be sunny and winds will be moderate from the southwest as mountain temperatures rise to the upper thirties. The rest of the week looks to be sunny, warm and spring-like.
Snowfall has been heavy, wet and plentiful. 14-20+” has fallen at the higher elevations, but even more important is the weight of this new snow which is measuring 1.5-2” of snow water equivalency (SWE), a very heavy 24-hour burden for almost all of our areas. Mountain temperatures are near 20F and winds are westerly at 20-40 mph. A few more inches will fall before the storm ends early this morning. Partly cloudy skies with west winds blowing 20-30 mph are in store for us today with sunny skies forecasted the rest of the week.
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.
