Fort Harrison Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Fort Harrison.

Use the Radar Maps link provided to understand the trajectory of a storm.

Lake Wind Advisory issued November 5 at 2:00PM MST until November 6 at 8:00AM MST by NWS Glasgow MT

* WHAT...Northwest winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Central and Southeast Phillips, Central and Southern Valley, Garfield, McCone, and Petroleum Counties. * WHEN...From 5 PM this afternoon to 8 AM MST Wednesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft.

Winter Storm Warning issued November 5 at 1:44PM MST until November 6 at 11:00AM MST by NWS Billings MT

* WHAT...Heavy Snow and Blowing Snow expected. Total snow accumulations between 7 and 14 inches. Winds gusting as high as 45 mph creating significant blowing and drifting snow. * WHERE...In Montana, Pryor/Northern Bighorn Mountains. In Wyoming, Northeast Bighorn Mountains. * WHEN...Until 11 AM MST Wednesday. * IMPACTS...Recreation in the high country will be impacted by heavy accumulating snow. Travel could be very difficult on US-14. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches and recently burned timber. * ADDITIONAL DETAILS...The heaviest snowfall will be on north and northwest facing slopes to the north of Burgess Junction.

Winter Weather Advisory issued November 5 at 1:44PM MST until November 6 at 11:00AM MST by NWS Billings MT

* WHAT...Snow and Blowing Snow expected. Total snow accumulations between 2 and 5 inches with locally heavier accumulations possible. Winds gusting as high as 50 mph creating significant blowing and drifting snow. * WHERE...Judith Gap. * WHEN...Until 11 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous by this evening. Travel could be very difficult from Harlowton through Judith Gap. Widespread blowing snow could produce near whiteout conditions at times. The hazardous conditions could impact this evening and Wednesday morning commutes. * ADDITIONAL DETAILS...The heaviest snowfall will be in the higher foothills of the Little Belt and Big Snowy mountains.

Winter Weather Advisory issued November 5 at 1:44PM MST until November 6 at 11:00AM MST by NWS Billings MT

* WHAT...Snow and Blowing Snow expected. Total snow accumulations of 1 to 4 inches. Winds gusting as high as 40 mph creating ares of blowing snow. * WHERE...Musselshell, Treasure, and Northern Rosebud. * WHEN...Until 11 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous by this evening. Plan on slippery road conditions. Blowing snow could significantly reduce visibility at times. The hazardous conditions could impact this evening and Wednesday morning commutes. * ADDITIONAL DETAILS...The heaviest snowfall will be over the higher hills on north facing slopes.

Winter Weather Advisory issued November 5 at 1:44PM MST until November 6 at 11:00AM MST by NWS Billings MT

* WHAT...Snow and Blowing Snow expected. Total snow accumulations between 2 and 5 inches with locally heavier accumulations possible. Winds gusting as high as 40 mph creating areas of blowing snow. * WHERE...In Montana, Bighorn Canyon, Northern Big Horn, Southern Big Horn, and Southern Rosebud. In Wyoming, Sheridan Foothills. * WHEN...Until 11 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous by this evening. Plan on slippery road conditions. Blowing snow could significantly reduce visibility at times. The hazardous conditions could impact this evening and Wednesday morning commutes. * ADDITIONAL DETAILS...The heaviest snow will be in the higher hills and foothills above 4500 feet on north facing slopes.

Winter Weather Advisory issued November 5 at 1:37PM MST until November 6 at 11:00AM MST by NWS Glasgow MT

* WHAT...Snow expected. Total snow accumulations between 1 and 3 inches. Winds gusting as high as 45 mph. * WHERE...Garfield and Petroleum Counties. * WHEN...Until 11 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous.

Winter Storm Warning issued November 5 at 1:37PM MST until November 6 at 11:00AM MST by NWS Glasgow MT

* WHAT...Heavy snow Little Rocky Mountains. Additional snow accumulations up to 8 inches. Winds gusting as high as 40 mph. * WHERE...Southwest Phillips County. * WHEN...Until 11 AM MST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes.

High Wind Warning issued November 5 at 1:23PM MST until November 5 at 11:00PM MST by NWS Great Falls MT

* WHAT...Northwest winds 25 to 35 mph, with gusts up to 60 mph. Strongest winds are expected near the Sweetgrass Hills, Judith Gap and near the Big Snowy Mountains. * WHERE...Eastern Toole and Liberty Counties, Judith Basin County and Judith Gap, Fergus County below 4500ft, and Snowy and Judith Mountains. * WHEN...Until 11 PM MST this evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The strongest winds are expected to occur between and near terrain gaps like the US Hwy 89 and Montana Hwy 200 corridor between the Little Belt and Highwood Mountains, in addition to areas immediately downwind of the island ranges of Central and North Central Montana.

Winter Weather Advisory issued November 5 at 1:17PM MST until November 5 at 11:00PM MST by NWS Great Falls MT

* WHAT...Snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 50 mph. * WHERE...The foothills and plains adjacent to the Rocky Mountain Front, The Interstate 15 Corridor north of Power, and Western and Central Chouteau County. * WHEN...Until 11 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches.

Winter Storm Warning issued November 5 at 1:17PM MST until November 5 at 11:00PM MST by NWS Great Falls MT

* WHAT...Heavy snow and blowing snow in the Sweetgrass Hills will begin to diminish this evening. Additional snow accumulations up to 4 inches. Winds gusting as high as 60 mph. * WHERE...Eastern Toole and Liberty Counties. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. Strong winds could cause power outages.

Winter Weather Advisory issued November 5 at 1:17PM MST until November 5 at 11:00PM MST by NWS Great Falls MT

* WHAT...Snow. Additional snow accumulations between 2 and 4 inches. Winds gusting as high as 40 mph. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...Until 11 PM MST this evening. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Widespread blowing snow could significantly reduce visibility. Strong winds could cause damage to trees and power lines.

Winter Storm Warning issued November 5 at 1:17PM MST until November 6 at 5:00AM MST by NWS Great Falls MT

* WHAT...Heavy snow and blowing snow above 4000 feet in the Bears Paw Mountains. Additional snow accumulations up to 10 inches on the north slopes with up to 3 inches on the south slopes. Winds gusting as high as 45 mph. * WHERE...Bears Paw Mountains * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...Snowfall rates of around 1 inch per hour are expected through this evening above 4000 feet in the Bears Paw Mountains. These high snowfall rates will lead to rapid snow accumulations on roads.

Winter Storm Warning issued November 5 at 1:17PM MST until November 6 at 5:00AM MST by NWS Great Falls MT

* WHAT...Heavy snow. Additional snow accumulations between 8 and 16 inches. Winds gusting as high as 50 mph. * WHERE...The Highwood, Little Belt, Judith, and Snowy Mountains. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Travel could be very difficult and tire chains may be required for some vehicles. Those in the backcountry should ensure they are prepared for dangerous conditions. Widespread blowing snow could significantly reduce visibility. Strong winds could cause extensive damage to trees and power lines. * ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches will occur through this evening. These high snowfall rates will lead to rapid snow accumulation and very low visibility on roads.

Winter Weather Advisory issued November 5 at 1:17PM MST until November 6 at 5:00AM MST by NWS Great Falls MT

* WHAT...Snow. Additional snow accumulations between 2 and 8 inches. Winds gusting as high as 45 mph. * WHERE...Big Belt, Bridger and Castle Mountains, Elkhorn and Boulder Mountains, Gates of the Mountains, and Meagher County Valleys. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches.

Winter Storm Warning issued November 5 at 1:17PM MST until November 6 at 5:00AM MST by NWS Great Falls MT

* WHAT...Heavy snow. Additional snow accumulations up to 10 inches in northern portions of Gallatin and Madison ranges. Winds gusting as high as 35 mph. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Gusty winds could bring down tree branches.

Winter Storm Warning issued November 5 at 1:17PM MST until November 6 at 5:00AM MST by NWS Great Falls MT

* WHAT...Heavy snow in areas near the Little Belt, Highwood and Big Snowy Mountains. Additional snow accumulations up to 10 inches above 4000 ft. 1 to 4 inches of snow accumulation at elevations below 4000ft. Winds gusting as high as 60 mph across portions of Judith Basin and Fergus counties. * WHERE...Cascade County below 5000ft, Fergus County below 4500ft, and Judith Basin County and Judith Gap. * WHEN...Until 5 AM MST Wednesday. * IMPACTS...Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Tuesday evening commute with lingering snow and ice on roads impacting the Wednesday morning commute. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snowfall rates of around 1 inch per hour are possible through 8 PM MDT in areas near the mountains, lead to rapid accumulations and poor visibility on roads like US Hwy 89 US Hwy 87 from Armington Junction to Geyser and US Hwy 89 from Armington Junction south into the Little Belt Mountains