Advisory Archive
Clear skies allowed the temperatures to drop into the single digits this morning. There’s no new snow to report and ridgetop winds have been blowing west to southwest at 15-30 mph. Today will cloud up as moisture streams in from the Pacific; however I’m only expecting a teaser of snow by tomorrow morning with flurries that might add up to an inch in the southern mountains. Temperatures should warm to the teens today as winds remain westerly at 20-30 mph.
A weak storm system has moved over southwest Montana bringing light precipitation to much of our forecast area. The mountains around West Yellowstone picked up 3 inches overnight while the rest of our advisory area picked up a trace to one inch. Currently, winds are light out of the W-SW at 5-15 mph and temperatures are in the high teens to low twenties F. Today, scattered snow showers will remain over southwest Montana delivering an additional 1-2 inches of snow. Winds will stay light out of the W-SW and daytime temperatures will climb into the low thirties F. A ridge of high pressure will build tonight into tomorrow bringing southwest Montana cooler and drier conditions.
Over the past 24 hours a brief ridge of high pressure brought southwest Montana clearing skies and warmer temperatures. Yesterday, mountain temperatures climbed into the mid to high twenties F under mostly sunny skies and winds were blowing out of the W at 15-25 mph. Currently, mountain temperatures are in the mid teens to low twenties F and ridgetop winds are blowing out of the W at 20-30 mph with the Hyalite weather station recording gusts close to 50 mph.
Today, the ridge high pressure will begin to break down as the next wave of pacific moisture pushes in from the west. This will produce cloudy skies with an increasing chance of precipitation this afternoon. Temperatures will stay mild with highs reaching the upper twenties F and winds will increase out of the W blowing 20-40 with gusts up to 50 mph. We can expect light precipitation to begin this evening, with a better chance of snow tomorrow. The southern mountains should see 2-4 inches by tomorrow night with 4-6 inches falling in the north.
Today will be a good one to get outside after yesterday’s feast. Overnight, temperatures warmed into the low teens F and will reach 20 degrees F today under a mix of some sun and clouds. Winds were blowing 15-30 mph from the W in most areas except in the Bridger Range where winds were blowing 40 mph yesterday and 30 mph this morning. Today, ridgetop winds will continue blowing 15-30 mph from the W. Over the past 2 days 3-5 inches of low density snow has fallen, and late this evening a few snowflakes should fall but not accumulate.
Burrrr! The coldest temperatures of the season have moved into southwest Montana turning off all precipitation. Not to worry though – this latest storm delivered over two feet of snow to the mountains around West Yellowstone, 15-18 inches to the mountains around Cooke City and 6-8 inches to the northern Gallatin and Madison Ranges. The Bridgers received a total of 2-4 inches. The latest storm is being pushed out by an arctic blast that is descending from Canada.
Currently mountain temperatures are sitting between ten and twenty below zero and winds are blowing out of the W-NW at 15-20 mph with gusts up to 30 mph. Mountain temperatures will struggle to climb above zero today and winds will increase out of W-NW reaching a consistent 20-30 mph by this afternoon. High clouds will remain over our area for the remainder of the day, but no precipitation is expected. Temperatures will gradually start to increase by Friday.Over the past 24 hours a strong storm system has impacted the southern mountains of our advisory area delivering close to a foot of snow near West Yellowstone and 4-6 inches to the mountains around Cooke City. Big Sky has picked up 3-4 inches, but snow amounts decrease rapidly has you head north with the northern Gallatin Range as well as the Bridger Range only picking up an inch or two.
At 4 am this morning mountain temperatures were in the single digits above or below zero in the northern mountains and mid to high teens in the south. Valley temperatures are close to zero. Both the Hyalite and Cooke City weather stations are recording consistent winds at 20 to 30 mph out of the SW with gust reaching over 50 mph. The Bridger Range is on the calm side with ridge top winds blowing 10-15 mph out of the SW. Today, we can expect more snow and wind throughout our advisory area with the heaviest accumulations taking place around West Yellowstone and Cooke City.
Last night 3-6” fell in the southern mountains with a trace to one inch dusting the northern ranges. Winds were remarkably still yesterday, but recently picked up to 10-20 mph out of the west-southwest. Mountain temperatures are in the single digits in the north and in the mid teens down south. There won’t be much warming today as temperatures drop to 10 below tonight. A moist flow will bring snow showers today through Tuesday. The southern mountains should see 4-6” by tomorrow morning with 2-4” falling in the north (Big Sky to the Bridger Range).
Yesterday another 3-4 inches fell in the mountains around Bozeman. The Big Sky area picked up closer to 6 inches with amounts climbing to 12-14 inches outside West Yellowstone and Cooke City. Ridgetop winds are steady at 15-20 mph out of the west with temperatures reading in the low single digits. A break in snowfall today will end later tonight as a moist southwest flow drops 2-4 inches in the southern mountains. Monday looks to be snowy and colder with temperatures on Tuesday only reaching zero.
There’s no denying the fact that winter has arrived with 6-8 inches of new snow near Bozeman and Big Sky, 15 inches near West Yellowstone, and 22 inches near Cooke City. Temperatures this morning were in the mid teens F and winds calmed to 5-10 mph from the S and SE. Both winds and temperatures should remain the same through much of today though temperatures should start dropping this afternoon. Snowfall will continue with another 4-6 inches near Bozeman and Big Sky and 8-10 inches near Cooke City and West Yellowstone.