Advisory Archive
I sure hope Santa is instrument rated, because he’ll be flying blind in the middle of a storm tonight and might deliver presents to the wrong house. So, if anyone gets a new set of ice tools and crampons, they’re mine and you can drop them off at the office.
Yesterday was mostly sunny with temperatures in the teens and westerly winds averaging 20-30 mph, gusting to 45. Today, expect cloudy skies, similar winds and mountain temperatures in the high 20’s up north and teens down south. Snowfall will begin later this afternoon and continue into tomorrow. By Christmas morning the mountains will have 4-6 inches of new snow with Cooke City getting closer to 10 inches.
Snowfall distribution in the last 24 hours appears random. A trace to one inch fell in the Bridger Range, around Big Sky and West Yellowstone while 2-3 inches fell up Hyalite, Carrot Basin and Cooke City. Under partly cloudy skies the snowfall has ended, temperatures dropped to 10F and winds have calmed to 10-15 mph out of the W-SW. Today will be mostly sunny with light winds and mountain temperatures climbing to the upper 20s. No new snow is expected in the next 24 hours.
Since yesterday morning most mountain locations picked up 6-8 inches of high density snow with the exception of the Bridger Range which picked up 2 inches. This morning an unsettled northwest flow is producing snow showers in mountains near Big Sky which have received three inches since midnight. Currently, temperature are in the upper teens to low twenties F and winds are blowing 15-25 mph out of the west-northwest with ridgetop gust reaching 30 mph. Today, a northwest flow will remain over the area producing light snow showers with an additional 1-2 inches possible by this afternoon. Temps will remain in the upper teens to low twenties F and winds will continue to blow 15-25 out of the west-northwest. A weak ridge of high pressure will gradually build producing quiet weather tonight and tomorrow.
Over the past 24 hours the mountains around Cooke City and West Yellowstone received 4-6 inches of new snow. The mountains around Big Sky picked up 3-4 inches while the Bridger Range received a trace. At 4 a.m. temperatures are in the 20s F and winds are blowing 15-30 mph out of the west and southwest with ridgetop gusts pushing 40 mph. Today, snow will continue in the southern ranges where an additional 3-5 inches is possible. The mountains around Big Sky will likely see another 2-4 inches while the mountains around Bozeman will see 1-2 inches. Temperatures will warm into the upper 20s to low 30s F and winds will shift to the west and northwest blowing 20-40 mph.
Over the past 24 hours the mountains picked up 2-4 inches of new snow. At 4 a.m. snow has stopped falling and temperatures are in the upper teens to low twenties F under partly cloudy skies. Winds are blowing 10-20 mph out of west and southwest with ridgetop gusts reaching close to 30 mph. Today, a brief window of clear weather will allow temperatures warm into the upper 20s to low 30s F. Winds will increase through the day out of the west and southwest with ridgetop gusts reaching close to 40 mph by this afternoon. Skies will become mostly cloudy late in the day as a more potent storm system approaches from the west. The mountains around West Yellowstone and Cooke City could see 4-6 inches of snow by tomorrow morning while the mountains around Bozeman and Big Sky could see 2-4 inches.
Since yesterday no snow accumulated, but some should come tonight and more Saturday night. This morning temperatures were in the high teens F. Winds increased since yesterday and were blowing 10-15 mph gusting 30 mph mostly from the SW. A short lived ridge of high pressure will bring some sunshine to most areas this morning and temperatures should reach the mid-20s F. Winds will continue from the SW and increase a little during the day. Snowfall tonight should bring 1-3 inches in most areas by tomorrow morning. Very strong winds should arrive Saturday night through Sunday with heavier snowfall.
Since yesterday morning the Bridger Range received another 3 inches of snow while most other places received a trace to an inch. Winds this morning were surprisingly light, blowing 10 mph gusting 15 mph from the S to W with temperatures in the mid-teens F. Today a few snowflakes may fall in the afternoon but not accumulate. Temperatures should climb into the low 20s F, and winds should increase a little mostly blowing from the SW. A little snow will come Friday night and a more potent storm should arrive late Saturday/early Sunday.
Snow graced our entire area with 6-7 inches falling around Big Sky and 2-3 inches everywhere else. Under cloudy skies temperatures are in the teens and winds are west to southwest at 10-20 mph with gusts of 30 in Hyalite. Snow flurries will end this morning and skies will be mostly cloudy with mountain temperatures reaching the mid-20s. Tomorrow looks to be sunny and my fingers are crossed for more snow later this week.
The weather yesterday was mostly clear and calm with temperatures reaching the high teens. Cooke City had flurries all day, but no accumulation. Around midnight winds picked up out of the west to southwest and are averaging 10-20 mph with gusts of 30, which will continue for the next 24 hours. Mountain temperatures are near 10F and will only rise into the high teens as clouds continue to build. Tonight light snowfall will bring 1-2 inches in the southern ranges and a trace to one inch up north.
This latest storm did not produce consistent snowfall amounts. The Northern Gallatin Range picked up close to a foot of new snow while the Bridger Range received nearly 10 inches. Carrot Basin Snotel site in the southern Madison Range received 5 inches of new snow while the mountains around Big Sky, West Yellowstone and Cooke City squeezed out 2-3 inches. Currently, temperatures are in the single digits to mid-teens F under partly cloudy skies and winds are light out of the WSW. Today, a weak ridge of high pressure will build over the region producing clear and calm conditions with seasonal temperatures.
