Advisory Archive

Yesterday most places received an additional 3-5 inches of snow. Strong easterly winds in the Bridger Range calmed overnight to 10-15 mph and shifted to the SSW this morning.  All other areas received very little wind yesterday. Today wind directions will swing around the compass and only blow about 10 mph. Temperatures were in the teens to low 20s F this morning and should climb to near 30 F today with mostly cloudy skies. More moisture and some instabilities in the atmosphere will bring another 2-3 inches of snow to Cooke City while other areas will get an inch at most.

Since yesterday morning the Bridger Range received 6-9 inches of snow with winds blowing 20-30 mph from the NE at the ridge and SE at mid mountain. Most other places received 4-6 inches with winds blowing 10-15 mph mostly from the NE at ridgetops. Winds shouldn’t change much today. Temperatures this morning were in the mid teens to low 20s F and will rise to near 30 F today. Snowfall will continue and an additional 5-7 inches will accumulate by tomorrow morning.   

Like Rocky in the last round of a title fight, old man Winter is off the ropes and punching wildly. At 6 a.m., 10-12 inches of new snow has fallen outside West Yellowstone and 7 inches outside Cooke City. All other weather stations are showing 4 inches with temperatures in the high teens and light west to southwest winds at 10 mph. Winds will pick up to 15-25 mph by tonight and snow will continue to fall into Friday. By morning I expect a foot of snow in the southern mountains and 6-8 inches everywhere else.

High precipitation intensity yesterday morning dropped another 10 inches of snow around Cooke City, 3 inches near West Yellowstone and 6-7 inches from Big Sky to the Bridger Range. Winds averaged 30 mph with gusts exceeding 50 mph as the snow fell, but have since calmed to 10-20 mph. At 6 a.m. mountain temperatures are near 10F under clear skies, but cloud cover will increase this afternoon and snow will fall tonight lasting into tomorrow. Wind speeds will increase out of the west to southwest at 20-30 mph. By tomorrow morning 3-6 inches will cover the mountains.

In the past 24 hours the mountains outside Cooke City picked up 10 inches of new snow while West Yellowstone got 6 inches. The snow tapered off to the north as 2-4 inches fell around Big Sky, an inch in the northern Gallatin, and nada in the Bridger Range. Temperatures are in the high 20s, their warmest in 24 hours. West to southwest winds were strong yesterday and remain so with speeds averaging 30 mph and gusting to 50 mph. By this afternoon winds will decrease to 20-30 mph and the freezing level will drop to 5,000 feet.  By this evening the southern mountains will get another 6-8 inches of snow with 2-3 inches around Big Sky and 1-2 inches near Bozeman.  

Over the past 24 hours intermittent snow squalls dropped 2-3 inches of snow on the Bridger and Northern Gallatin ranges and 1-2 inches on the mountains around Big Sky and Cooke City. The mountains West Yellowstone have remained dry. Currently, mountain temperatures are in the single digits F around Big Sky and low to mid teens elsewhere and will climb into the 30’s F by this afternoon. Winds are blowing 15-25 mph out of the W, but will increase into the 30’s with gusts into the 40’s by this evening. Today, a brief ridge of high pressure will produce mostly sunny skies during the morning hours, but increasing clouds will move into southwest Montana by this evening. Another storm is forecasted to impact our area tonight into tomorrow. 2-3 inches of snow is possible in the mountains by tomorrow morning.

Yesterday, a fast moving cold front moved through southwest Montana producing strong winds, lightning, and precipitation in the form of both rain and snow. This fast moving weather disturbance deposited 3-4 inches of high density snow in the Bridger and northern Gallatin Ranges as well as the mountains around Cooke City. All other areas received 1-2 inches of snow. Winds spiked during the frontal passage, reaching over 60 mph, but have decreased significantly. Currently, winds are blowing out of the WNW at 15-25 mph and should continue along these lines for the remainder of the day. Temperatures are currently in the single digits to high teens and will climb into the 20’s and 30’s F by this afternoon. Today, mountain snow showers are likely with an additional 1-3 inches possible by this evening. Southwest Montana will see a slight break in the weather tonight into tomorrow.

Mountain temperatures are in the mid to upper 30s F this morning with winds blowing 15-30 mph from the SW. A trough of low pressure will approach Montana this morning and bring significant changes in the weather. Strong SW winds with gusts up to 50 mph should arrive at the front of this system. Snow should arrive in the mountains this afternoon with cold air behind it. Temperatures should rise to the high 30s and low 40s this morning before gradually cooling as the storm progresses. By tomorrow morning 3-5 inches of snow should fall in most areas although the mountains near Cooke City should get a bit more….as they have this entire season.

Warm weather continues with temperatures near 30 F at 9000 ft. Since yesterday the mountains near Cooke City received 5 inches of snow. The rest of the advisory area remained dry. Winds blew 30-50 mph overnight from the W and SW, and this morning they were blowing 20-35 mph. An upper level ridge will prevent any accumulating precipitation today. Temperatures will climb into the high 30s and low 40s F, and winds will blow 15-25 mph from the W and SW. A low pressure system will arrive tomorrow afternoon with snow followed by colder temperatures on Sunday.

The current weather pattern continues to deliver warm temperatures, rain, and snow. Since yesterday morning Bridger Bowl and Big Sky received an additional 2-3 inches of snow. In many places with temperatures near or above freezing, it’s difficult to tell how much precipitation fell as rain and how much fell as snow. Hyalite Canyon and the Taylor Fork area received 0.5 inches of water which should be 5 inches of snow above treeline. The mountains near Cooke City received 0.9 inches of water or 9 inches of snow above treeline. Freezing levels have been between 8000 and 9000 feet.

Yesterday westerly ridgetop winds blew 30-50 mph. They decreased to 20-40 mph this morning with temperatures hovering near 32 F. Winds will remain strong today and temperatures will rise into the upper 30s and low 40s F. More snow and rain will fall though the current storm is ending. Spring storms are somewhat unpredictable, but most areas should receive an additional 1-3 inches of snow today while Cooke City should get 4-5 inches.