Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Avalanche Warning |
| Area(s): | Absaroka/Beartooth Mountains |
| Effective: | 2025-12-10 @ 6:37 am |
| Onset: | 2025-12-10 @ 6:37 am -> 2025-12-11 @ 6:00 am |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Billings MT on 2025-12-10 @ 6:37 am |
| Headline: | Avalanche Warning issued December 10 at 5:37AM MST by NWS Billings MT |
| Description: |
AVWBYZ The following message is transmitted at the request of the Gallatin National Forest Avalanche Center. The Gallatin NF Avalanche Center in Bozeman has issued a BACKCOUNTRY AVALANCHE WARNING for the following areas: NWS Billings MT - MTZ067 (MTZ067) * WHAT...The avalanche danger is HIGH and avalanches will happen today. * WHERE...The mountains near Cooke City. * WHEN...In effect from Tue 04:39 MST to Wed 04:39 MST. * IMPACTS...Avalanches have been happening for the last 4 days. More snow and especially high winds will cause many more avalanches today. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche conditions. Stay far away from any steep slope. Avalanches may be triggered from flat terrain below steeper slopes. Consult http://www.mtavalanche.com or www.avalanche.org for more detailed information. Similar avalanche danger may exist at locations outside the coverage area of this or any avalanche center. |
| Alert: | Special Weather Statement |
| Area(s): | Big Belt, Bridger and Castle Mountains; Meagher County Valleys; Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2025-12-10 @ 6:25 am |
| Onset: | 2025-12-10 @ 6:25 am -> 2025-12-10 @ 8:00 am |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 6:25 am |
| Headline: | Special Weather Statement issued December 10 at 5:25AM MST by NWS Great Falls MT |
| Description: |
Scattered rain and snow showers are moving across Southwest MT early this morning. Snow levels are generally above 4500 feet. Thus the snow is mostly affecting passes right now, such as Elk Park Pass and Boulder Hill on Interstate 15 and Homestake Pass on I-90. Those traveling early this morning should be alert for quickly changing road conditions, especially if traveling over mountain passes, along with areas of reduced visibility. |
| Alert: | Winter Storm Watch |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone; Dawson; Prairie; Northern Phillips; Southwest Phillips |
| Effective: | 2025-12-10 @ 4:56 am -> 2025-12-13 @ 12:00 pm |
| Onset: | 2025-12-11 @ 9:00 pm -> 2025-12-10 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Glasgow MT on 2025-12-10 @ 4:56 am |
| Headline: | Winter Storm Watch issued December 10 at 3:56AM MST until December 13 at 11:00AM MST by NWS Glasgow MT |
| Description: |
* WHAT...For the Winter Weather Advisory, mixed precipitation expected. Total snow accumulations up to 3 inches and ice accumulations up to one tenth of an inch. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 6 and 11 inches possible. * WHERE...A portion of northeast Montana. * WHEN...For the Winter Weather Advisory, until 8 PM MST Thursday. For the Winter Storm Watch, from Thursday evening through Saturday morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. |
| Alert: | Winter Weather Advisory |
| Area(s): | Daniels; Sheridan; Western Roosevelt; Richland; Wibaux; Northern Valley; Eastern Roosevelt |
| Effective: | 2025-12-10 @ 4:56 am -> 2025-12-11 @ 9:00 pm |
| Onset: | 2025-12-10 @ 5:00 am -> 2025-12-10 @ 5:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2025-12-10 @ 4:56 am |
| Headline: | Winter Weather Advisory issued December 10 at 3:56AM MST until December 11 at 8:00PM MST by NWS Glasgow MT |
| Description: |
* WHAT...Mixed precipitation expected. Total snow accumulations between 1 and 4 inches and ice accumulations up to one tenth of an inch. * WHERE...A portion of northeast Montana. * WHEN...Until 8 PM MST Thursday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. |
| Alert: | Winter Weather Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone; Dawson; Prairie; Northern Phillips; Southwest Phillips |
| Effective: | 2025-12-10 @ 4:56 am -> 2025-12-11 @ 9:00 pm |
| Onset: | 2025-12-10 @ 5:00 am -> 2025-12-10 @ 5:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2025-12-10 @ 4:56 am |
| Headline: | Winter Weather Advisory issued December 10 at 3:56AM MST until December 11 at 8:00PM MST by NWS Glasgow MT |
| Description: |
* WHAT...For the Winter Weather Advisory, mixed precipitation expected. Total snow accumulations up to 3 inches and ice accumulations up to one tenth of an inch. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 6 and 11 inches possible. * WHERE...A portion of northeast Montana. * WHEN...For the Winter Weather Advisory, until 8 PM MST Thursday. For the Winter Storm Watch, from Thursday evening through Saturday morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. |
| Alert: | High Wind Warning |
| Area(s): | Judith Basin County and Judith Gap |
| Effective: | 2025-12-10 @ 4:10 am -> 2025-12-11 @ 4:00 pm |
| Onset: | 2025-12-10 @ 9:00 am -> 2025-12-10 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:10 am |
| Headline: | High Wind Warning issued December 10 at 3:10AM MST until December 11 at 3:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Judith Basin County and Judith Gap. * WHEN...From 8 AM this morning to 3 PM MST Thursday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | Eastern Glacier, Western Toole, and Central Pondera |
| Effective: | 2025-12-10 @ 4:10 am -> 2025-12-10 @ 9:00 pm |
| Onset: | 2025-12-10 @ 9:00 am -> 2025-12-10 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:10 am |
| Headline: | High Wind Warning issued December 10 at 3:10AM MST until December 10 at 8:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...West winds 30 to 40 mph, with gusts up to 70 mph expected. * WHERE...Eastern Glacier, Western Toole, and Central Pondera Counties. * WHEN...From 8 AM this morning to 8 PM MST this evening. * IMPACTS...Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | Northern High Plains; Southern High Plains |
| Effective: | 2025-12-10 @ 4:10 am -> 2025-12-10 @ 9:00 pm |
| Onset: | 2025-12-10 @ 9:00 am -> 2025-12-10 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:10 am |
| Headline: | High Wind Warning issued December 10 at 3:10AM MST until December 10 at 8:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...West winds 40 to 50 mph, with gusts up to 90 mph expected. * WHERE...The foothills and plains adjacent to the Rocky Mountain Front. * WHEN...From 8 AM this morning to 8 PM MST this evening. * IMPACTS...Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | Upper Blackfoot and MacDonald Pass |
| Effective: | 2025-12-10 @ 4:10 am -> 2025-12-10 @ 9:00 pm |
| Onset: | 2025-12-10 @ 9:00 am -> 2025-12-10 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:10 am |
| Headline: | High Wind Warning issued December 10 at 3:10AM MST until December 10 at 8:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...West winds 35 to 45 mph, with gusts up to 65 mph expected. * WHERE...Upper Blackfoot and MacDonald Pass. * WHEN...From 8 AM this morning to 8 PM MST this evening. * IMPACTS...Travel could be difficult, especially for high profile vehicles. |
| Alert: | Winter Weather Advisory |
| Area(s): | Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Helena Valley |
| Effective: | 2025-12-10 @ 4:05 am -> 2025-12-10 @ 12:00 pm |
| Onset: | 2025-12-10 @ 4:05 am -> 2025-12-10 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:05 am |
| Headline: | Winter Weather Advisory issued December 10 at 3:05AM MST until December 10 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow and freezing rain expected. Total snow accumulations up to one inch along with a light glace of ice. * WHERE...Gates of the Mountains, Helena Valley, and Upper Blackfoot and MacDonald Pass. * WHEN...Until 11 AM MST this morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. |
| Alert: | Winter Weather Advisory |
| Area(s): | Northern High Plains; Southern High Plains; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Little Belt and Highwood Mountains; Snowy and Judith Mountains |
| Effective: | 2025-12-10 @ 4:05 am -> 2025-12-10 @ 12:00 pm |
| Onset: | 2025-12-10 @ 4:05 am -> 2025-12-10 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:05 am |
| Headline: | Winter Weather Advisory issued December 10 at 3:05AM MST until December 10 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the Winter Weather Advisory, snow and freezing rain expected. Total snow accumulations up to one inch along with a light glace of ice. For the winter storm watch, heavy snow possible. Total snow accumulations between 5 and 12 inches possible across lower elevations, with locally higher amounts at the higher mountain peaks. Winds could gust as high as 35 mph. * WHERE...Portions of central and north central Montana. * WHEN...For the Winter Weather Advisory, until 11 AM MST this morning. For the Winter Storm Watch, from Thursday afternoon through late Friday night. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. 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. The hazardous conditions could impact the Wednesday morning and evening commutes. Strong winds could cause tree damage. |
| Alert: | Winter Storm Watch |
| Area(s): | East Glacier Park Region; Southern Rocky Mountain Front |
| Effective: | 2025-12-10 @ 4:05 am -> 2025-12-13 @ 6:00 am |
| Onset: | 2025-12-11 @ 3:00 pm -> 2025-12-10 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:05 am |
| Headline: | Winter Storm Watch issued December 10 at 3:05AM MST until December 13 at 5:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the Winter Weather Advisory, snow and freezing rain expected. Total snow accumulations between 2 to 4 inches on Marias Pass, and up to 7 inches at ridge tops. Light ice accumulations. For the winter storm watch, heavy snow possible. Total snow accumulations between 7 and 12 inches possible along Marias Pass, with over a foot of snow at the higher peaks. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...For the Winter Weather Advisory, until 11 AM MST this morning. For the Winter Storm Watch, from Thursday afternoon through late Friday night. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. 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. Very strong winds could cause extensive tree damage. |
| Alert: | Winter Storm Watch |
| Area(s): | Northern High Plains; Southern High Plains; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Little Belt and Highwood Mountains; Snowy and Judith Mountains |
| Effective: | 2025-12-10 @ 4:05 am -> 2025-12-13 @ 6:00 am |
| Onset: | 2025-12-11 @ 3:00 pm -> 2025-12-10 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:05 am |
| Headline: | Winter Storm Watch issued December 10 at 3:05AM MST until December 13 at 5:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the Winter Weather Advisory, snow and freezing rain expected. Total snow accumulations up to one inch along with a light glace of ice. For the winter storm watch, heavy snow possible. Total snow accumulations between 5 and 12 inches possible across lower elevations, with locally higher amounts at the higher mountain peaks. Winds could gust as high as 35 mph. * WHERE...Portions of central and north central Montana. * WHEN...For the Winter Weather Advisory, until 11 AM MST this morning. For the Winter Storm Watch, from Thursday afternoon through late Friday night. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. 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. The hazardous conditions could impact the Wednesday morning and evening commutes. Strong winds could cause tree damage. |
| Alert: | Winter Storm Watch |
| Area(s): | Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Hill County; Northern Blaine County; Bears Paw Mountains and Southern Blaine |
| Effective: | 2025-12-10 @ 4:05 am -> 2025-12-13 @ 6:00 am |
| Onset: | 2025-12-11 @ 12:00 pm -> 2025-12-10 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:05 am |
| Headline: | Winter Storm Watch issued December 10 at 3:05AM MST until December 13 at 5:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the Winter Weather Advisory, snow and freezing rain expected. Total snow accumulations up to an inch along with a light glace of ice. Snow accumulations up to 3 inches in the Bears Paw Mountains. For the winter storm watch, heavy snow possible. Total snow accumulations between 5 and 12 inches possible across lower elevations, with locally higher amounts in the Bears Paws. * WHERE...Eastern Glacier, Western Toole, and Central Pondera Counties, Eastern Toole and Liberty Counties, Hill County, Northern Blaine County, and Bears Paw Mountains and Southern Blaine. * WHEN...For the Winter Weather Advisory, until 11 AM MST this morning. For the Winter Storm Watch, from Thursday morning through late Friday night. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. |
| Alert: | Winter Weather Advisory |
| Area(s): | Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Hill County; Northern Blaine County; Bears Paw Mountains and Southern Blaine |
| Effective: | 2025-12-10 @ 4:05 am -> 2025-12-10 @ 12:00 pm |
| Onset: | 2025-12-10 @ 4:05 am -> 2025-12-10 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:05 am |
| Headline: | Winter Weather Advisory issued December 10 at 3:05AM MST until December 10 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the Winter Weather Advisory, snow and freezing rain expected. Total snow accumulations up to an inch along with a light glace of ice. Snow accumulations up to 3 inches in the Bears Paw Mountains. For the winter storm watch, heavy snow possible. Total snow accumulations between 5 and 12 inches possible across lower elevations, with locally higher amounts in the Bears Paws. * WHERE...Eastern Glacier, Western Toole, and Central Pondera Counties, Eastern Toole and Liberty Counties, Hill County, Northern Blaine County, and Bears Paw Mountains and Southern Blaine. * WHEN...For the Winter Weather Advisory, until 11 AM MST this morning. For the Winter Storm Watch, from Thursday morning through late Friday night. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. |
| Alert: | Winter Weather Advisory |
| Area(s): | East Glacier Park Region; Southern Rocky Mountain Front |
| Effective: | 2025-12-10 @ 4:05 am -> 2025-12-10 @ 12:00 pm |
| Onset: | 2025-12-10 @ 4:05 am -> 2025-12-10 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-10 @ 4:05 am |
| Headline: | Winter Weather Advisory issued December 10 at 3:05AM MST until December 10 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the Winter Weather Advisory, snow and freezing rain expected. Total snow accumulations between 2 to 4 inches on Marias Pass, and up to 7 inches at ridge tops. Light ice accumulations. For the winter storm watch, heavy snow possible. Total snow accumulations between 7 and 12 inches possible along Marias Pass, with over a foot of snow at the higher peaks. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...For the Winter Weather Advisory, until 11 AM MST this morning. For the Winter Storm Watch, from Thursday afternoon through late Friday night. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. 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. Very strong winds could cause extensive tree damage. |
| Alert: | Winter Weather Advisory |
| Area(s): | Bighorn Canyon; Sheridan Foothills |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-10 @ 6:00 pm |
| Onset: | 2025-12-10 @ 9:00 am -> 2025-12-10 @ 6:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Weather Advisory issued December 10 at 1:42AM MST until December 10 at 5:00PM MST by NWS Billings MT |
| Description: |
* WHAT...Mixed precipitation expected. Total snow accumulations less than one inch. A light glaze of ice is possible with freezing rain. * WHERE...In Montana, Bighorn Canyon. In Wyoming, Sheridan Foothills. * WHEN...From 8 AM this morning to 5 PM MST this afternoon. * IMPACTS...Roads may become slick and hazardous today, including Interstate 90 through Sheridan and over Aberdeen Hill. |
| Alert: | Winter Weather Advisory |
| Area(s): | Red Lodge Foothills; Beartooth Foothills; Northern Carbon |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-10 @ 12:00 pm |
| Onset: | 2025-12-10 @ 6:00 am -> 2025-12-10 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Weather Advisory issued December 10 at 1:42AM MST until December 10 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...Mixed precipitation expected. Total snow accumulations less than 1 inch. A light glaze of ice is possible with freezing rain. * WHERE...Beartooth Foothills, Northern Carbon, and Red Lodge Foothills. * WHEN...From 5 AM to 11 AM MST this morning. * IMPACTS...Roads may become slick and hazardous this morning, including highways 212 and 310. |
| Alert: | Winter Storm Watch |
| Area(s): | Musselshell; Northern Stillwater; Golden Valley; Judith Gap; Northern Sweet Grass; Melville Foothills; Northeastern Yellowstone; Southern Wheatland; Southwestern Yellowstone |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-13 @ 12:00 pm |
| Onset: | 2025-12-11 @ 3:00 pm -> 2025-12-11 @ 2:45 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Storm Watch issued December 10 at 1:42AM MST until December 13 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...For the Winter Weather Advisory, mixed precipitation expected today. Total snow accumulations less than 1 inch. A light glaze of ice is possible with freezing rain. For the Winter Storm Watch, heavy snow possible late Thursday into Saturday. Total snow accumulations between 4 and 9 inches possible. * WHERE...Portions of central and south central Montana. * WHEN...For the Winter Weather Advisory, from 5 AM to 11 AM MST this morning. For the Winter Storm Watch, from Thursday afternoon through Saturday morning. * IMPACTS...Impacts to travel are possible. For the Winter Weather Advisory, roads may become slick and hazardous due to mixed precipitation, including freezing rain. For the Winter Storm Watch, roads may become slick and hazardous due to accumulating snowfall. * ADDITIONAL DETAILS...Rapidly falling temperatures combined with accumulating snow may result in a flash freeze on roadways late Thursday afternoon and evening. Travel may become treacherous. |
| Alert: | Winter Storm Watch |
| Area(s): | Crazy Mountains |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-13 @ 12:00 pm |
| Onset: | 2025-12-11 @ 3:00 pm -> 2025-12-11 @ 2:45 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Storm Watch issued December 10 at 1:42AM MST until December 13 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...Periods of heavy snow and blowing snow possible. Total snow accumulations between 10 and 18 inches. Winds could gust as high as 60 mph. * WHERE...Crazy Mountains. * WHEN...From Thursday afternoon through Saturday morning. * IMPACTS...Recreation in the high country may be impacted by heavy accumulating snow and blowing snow. Avalanche danger may increase. |
| Alert: | Winter Storm Watch |
| Area(s): | Fallon; Carter |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-13 @ 12:00 pm |
| Onset: | 2025-12-11 @ 3:00 pm -> 2025-12-11 @ 2:45 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Storm Watch issued December 10 at 1:42AM MST until December 13 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...For the Winter Weather Advisory, mixed precipitation expected today. Total snow accumulations less than 1 inch. A light glaze of ice is possible with freezing rain. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 3 and 7 inches possible. * WHERE...Carter and Fallon. * WHEN...For the Winter Weather Advisory, from 2 PM this afternoon to 8 PM MST this evening. For the Winter Storm Watch, from Thursday afternoon through Saturday morning. * IMPACTS...Impacts to travel are possible. For the Winter Weather Advisory, roads may become slick and hazardous due to mixed precipitation, including freezing rain. For the Winter Storm Watch, roads may become slick and hazardous due to accumulating snowfall. * ADDITIONAL DETAILS...Rapidly falling temperatures combined with accumulating snow may result in a flash freeze on roadways late Thursday afternoon and evening. Travel may become treacherous. |
| Alert: | Winter Storm Watch |
| Area(s): | Treasure; Northern Rosebud; Custer; Powder River; Northern Big Horn; Southern Rosebud; Southern Big Horn |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-13 @ 12:00 pm |
| Onset: | 2025-12-11 @ 3:00 pm -> 2025-12-11 @ 2:45 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Storm Watch issued December 10 at 1:42AM MST until December 13 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...For the Winter Weather Advisory, mixed precipitation expected today. Total snow accumulations less than 1 inch. A light glaze of ice is possible with freezing rain. For the Winter Storm Watch, heavy snow possible late Thursday into Saturday. Total snow accumulations between 5 and 10 inches possible. * WHERE...Portions of south central and southeast Montana. * WHEN...For the Winter Weather Advisory, from 8 AM this morning to 5 PM MST this afternoon. For the Winter Storm Watch, from Thursday afternoon through Saturday morning. * IMPACTS...Impacts to travel are possible. For the Winter Weather Advisory, roads may become slick and hazardous due to mixed precipitation, including freezing rain. For the Winter Storm Watch, roads may become slick and hazardous due to accumulating snowfall. * ADDITIONAL DETAILS...Rapidly falling temperatures combined with accumulating snow may result in a flash freeze on roadways late Thursday afternoon and evening. Travel may become treacherous. |
| Alert: | Winter Storm Warning |
| Area(s): | Absaroka/Beartooth Mountains |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-10 @ 6:00 pm |
| Onset: | 2025-12-10 @ 2:42 am -> 2025-12-10 @ 6:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Storm Warning issued December 10 at 1:42AM MST until December 10 at 5:00PM MST by NWS Billings MT |
| Description: |
* WHAT...Periods of heavy snow. Additional snow accumulations of 5 to 10 inches, greatest on west aspects. Winds gusting as high as 55 mph. * WHERE...Absaroka/Beartooth Mountains. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Recreation in the high country will be impacted by heavy accumulating snow and significant blowing snow. Whiteout conditions are possible over the highest elevations. Avalanche danger will increase. * ADDITIONAL DETAILS...Additional periods of snow possible Thursday into Friday. |
| Alert: | Winter Weather Advisory |
| Area(s): | Treasure; Northern Rosebud; Custer; Powder River; Northern Big Horn; Southern Rosebud; Southern Big Horn |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-10 @ 6:00 pm |
| Onset: | 2025-12-10 @ 9:00 am -> 2025-12-11 @ 2:45 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Weather Advisory issued December 10 at 1:42AM MST until December 10 at 5:00PM MST by NWS Billings MT |
| Description: |
* WHAT...For the Winter Weather Advisory, mixed precipitation expected today. Total snow accumulations less than 1 inch. A light glaze of ice is possible with freezing rain. For the Winter Storm Watch, heavy snow possible late Thursday into Saturday. Total snow accumulations between 5 and 10 inches possible. * WHERE...Portions of south central and southeast Montana. * WHEN...For the Winter Weather Advisory, from 8 AM this morning to 5 PM MST this afternoon. For the Winter Storm Watch, from Thursday afternoon through Saturday morning. * IMPACTS...Impacts to travel are possible. For the Winter Weather Advisory, roads may become slick and hazardous due to mixed precipitation, including freezing rain. For the Winter Storm Watch, roads may become slick and hazardous due to accumulating snowfall. * ADDITIONAL DETAILS...Rapidly falling temperatures combined with accumulating snow may result in a flash freeze on roadways late Thursday afternoon and evening. Travel may become treacherous. |
| Alert: | Winter Weather Advisory |
| Area(s): | Fallon; Carter |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-10 @ 9:00 pm |
| Onset: | 2025-12-10 @ 3:00 pm -> 2025-12-11 @ 2:45 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Weather Advisory issued December 10 at 1:42AM MST until December 10 at 8:00PM MST by NWS Billings MT |
| Description: |
* WHAT...For the Winter Weather Advisory, mixed precipitation expected today. Total snow accumulations less than 1 inch. A light glaze of ice is possible with freezing rain. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 3 and 7 inches possible. * WHERE...Carter and Fallon. * WHEN...For the Winter Weather Advisory, from 2 PM this afternoon to 8 PM MST this evening. For the Winter Storm Watch, from Thursday afternoon through Saturday morning. * IMPACTS...Impacts to travel are possible. For the Winter Weather Advisory, roads may become slick and hazardous due to mixed precipitation, including freezing rain. For the Winter Storm Watch, roads may become slick and hazardous due to accumulating snowfall. * ADDITIONAL DETAILS...Rapidly falling temperatures combined with accumulating snow may result in a flash freeze on roadways late Thursday afternoon and evening. Travel may become treacherous. |
| Alert: | Winter Weather Advisory |
| Area(s): | Musselshell; Northern Stillwater; Golden Valley; Judith Gap; Northern Sweet Grass; Melville Foothills; Northeastern Yellowstone; Southern Wheatland; Southwestern Yellowstone |
| Effective: | 2025-12-10 @ 2:42 am -> 2025-12-10 @ 12:00 pm |
| Onset: | 2025-12-10 @ 6:00 am -> 2025-12-11 @ 2:45 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:42 am |
| Headline: | Winter Weather Advisory issued December 10 at 1:42AM MST until December 10 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...For the Winter Weather Advisory, mixed precipitation expected today. Total snow accumulations less than 1 inch. A light glaze of ice is possible with freezing rain. For the Winter Storm Watch, heavy snow possible late Thursday into Saturday. Total snow accumulations between 4 and 9 inches possible. * WHERE...Portions of central and south central Montana. * WHEN...For the Winter Weather Advisory, from 5 AM to 11 AM MST this morning. For the Winter Storm Watch, from Thursday afternoon through Saturday morning. * IMPACTS...Impacts to travel are possible. For the Winter Weather Advisory, roads may become slick and hazardous due to mixed precipitation, including freezing rain. For the Winter Storm Watch, roads may become slick and hazardous due to accumulating snowfall. * ADDITIONAL DETAILS...Rapidly falling temperatures combined with accumulating snow may result in a flash freeze on roadways late Thursday afternoon and evening. Travel may become treacherous. |
| Alert: | Wind Advisory |
| Area(s): | Livingston Area; Beartooth Foothills |
| Effective: | 2025-12-10 @ 2:20 am -> 2025-12-11 @ 6:00 pm |
| Onset: | 2025-12-10 @ 12:00 pm -> 2025-12-11 @ 2:30 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:20 am |
| Headline: | Wind Advisory issued December 10 at 1:20AM MST until December 11 at 5:00PM MST by NWS Billings MT |
| Description: |
* WHAT...Southwest winds gusting up to 70 mph expected. * WHERE...Beartooth Foothills and Livingston Area. * WHEN...From 11 AM this morning to 5 PM MST Thursday. * IMPACTS...Strong crosswinds will make travel difficult along Interstate 90 from Livingston to Big Timber and roads along the Beartooth Foothills. * ADDITIONAL DETAILS...Strongest winds are expected tonight through Thursday morning. |
| Alert: | High Wind Warning |
| Area(s): | Judith Gap; Northern Sweet Grass; Melville Foothills; Southern Wheatland |
| Effective: | 2025-12-10 @ 2:20 am -> 2025-12-11 @ 6:00 pm |
| Onset: | 2025-12-10 @ 3:00 pm -> 2025-12-11 @ 2:30 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-10 @ 2:20 am |
| Headline: | High Wind Warning issued December 10 at 1:20AM MST until December 11 at 5:00PM MST by NWS Billings MT |
| Description: |
* WHAT...West winds gusting up to 65 mph expected. * WHERE...Judith Gap, Southern Wheatland, Melville Foothills, and Northern Sweet Grass. * WHEN...From 2 PM this afternoon to 5 PM MST Thursday. * IMPACTS...Strong crosswinds will make travel difficult along US-191 from Big Timber through Harlowton, especially for high profile vehicles. * ADDITIONAL DETAILS...Strongest winds are expected tonight through Thursday morning. |
| Alert: | Wind Advisory |
| Area(s): | Butte/Blackfoot Region |
| Effective: | 2025-12-10 @ 2:16 am -> 2025-12-10 @ 8:00 pm |
| Onset: | 2025-12-10 @ 9:00 am -> 2025-12-10 @ 8:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-10 @ 2:16 am |
| Headline: | Wind Advisory issued December 10 at 1:16AM MST until December 10 at 7:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...Southwest winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...Butte/Blackfoot Region. * WHEN...From 8 AM this morning to 7 PM MST this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | Wind Advisory |
| Area(s): | Missoula/Bitterroot Valleys |
| Effective: | 2025-12-10 @ 2:16 am -> 2025-12-10 @ 8:00 pm |
| Onset: | 2025-12-10 @ 9:00 am -> 2025-12-10 @ 8:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-10 @ 2:16 am |
| Headline: | Wind Advisory issued December 10 at 1:16AM MST until December 10 at 7:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...South to southeast winds 15 to 20 mph with gusts up to 45 mph expected. The strongest gusts are expected in the Bitterroot valley. * WHERE...Missoula/Bitterroot Valleys. * WHEN...From 8 AM this morning to 7 PM MST this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | Avalanche Warning |
| Area(s): | Kootenai/Cabinet Region |
| Effective: | 2025-12-09 @ 10:04 am |
| Onset: | 2025-12-09 @ 10:04 am -> 2025-12-10 @ 10:00 am |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Missoula MT on 2025-12-09 @ 10:04 am |
| Headline: | Avalanche Warning issued December 9 at 9:04AM MST by NWS Missoula MT |
| Description: |
AVWMSO The following message is transmitted at the request of Idaho Panhandle Avalanche Center Sandpoint ID. ...AVALANCHE WARNING ISSUED BY THE IDAHO PANHANDLE AVALANCHE CENTER... 16:00 PST Mon Dec 08 2025 The Idaho Panhandle Avalanche Center in Sandpoint has issued a BACKCOUNTRY AVALANCHE WARNING for the following areas: NWS Missoula MT - MTZ001 (MTZ001) * WHAT...THIS IS ONLY A TEST - DISREGARD. WE'RE ATTEMPTING TO TROUBLESHOOT EMAIL SENDING ERRORS. * WHERE...THIS IS ONLY A TEST - DISREGARD. WE'RE ATTEMPTING TO TROUBLESHOOT EMAIL SENDING ERRORS. * WHEN...In effect from Mon 16:00 PST to Tue 16:00 PST. * IMPACTS...THIS IS ONLY A TEST - DISREGARD. WE'RE ATTEMPTING TO TROUBLESHOOT EMAIL SENDING ERRORS. * PRECAUTIONARY / PREPAREDNESS ACTIONS...THIS IS ONLY A TEST - DISREGARD. WE'RE ATTEMPTING TO TROUBLESHOOT EMAIL SENDING ERRORS. Consult http://www.idahopanhandleavalanche.org/ or www.avalanche.org for more detailed information. Similar avalanche danger may exist at locations outside the coverage area of this or any avalanche center. |
| Alert: | Winter Weather Advisory |
| Area(s): | West Glacier Region; Potomac/Seeley Lake Region |
| Effective: | 2025-12-09 @ 1:42 am -> 2025-12-10 @ 12:00 pm |
| Onset: | 2025-12-10 @ 1:00 am -> 2025-12-10 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-09 @ 1:42 am |
| Headline: | Winter Weather Advisory issued December 9 at 12:42AM MST until December 10 at 11:00AM MST by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 2 to 5 inches. * WHERE...Marias Pass, Highway 83 Bigfork to Swan Lake, Highway 83 Seeley Lake to Condon, Glacier National Park, Highway 200 Bonner to Greenough, Polebridge, Essex, I-90 East Missoula to Bearmouth, and Bad Rock Canyon. * WHEN...From midnight tonight to 11 AM MST Wednesday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Difficult traveling conditions. Use extra caution while driving. The difficult conditions could impact the Wednesday morning commute, especially over higher passes. * ADDITIONAL DETAILS...Snowfall rates of 1 inch per hour will be possible between 4am and 7am |
| Alert: | Hydrologic Outlook |
| Area(s): | Granite, MT; Missoula, MT; Ravalli, MT |
| Effective: | 2025-12-08 @ 2:22 pm |
| Onset: | 2025-12-08 @ 2:22 pm -> 2025-12-10 @ 3:00 pm |
| Severity: | Unknown |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-08 @ 2:22 pm |
| Headline: | Hydrologic Outlook issued December 8 at 1:22PM MST by NWS Missoula MT |
| Description: |
ESFMSO A prolonged atmospheric river is expected to bring periods of heavy rain for western Montana Monday night through Thursday. Rising snow levels will lead to a rain-on-snow event for elevations below 7,000 feet Monday night into Tuesday morning. Precipitation rates will briefly decrease Tuesday afternoon before a second surge of moisture arrives Tuesday night into Thursday. During the second surge, snow levels will be lower initially, ranging from 3,500 to 5,000 feet with some slushy snow accumulations across northwest Montana valleys, but will then rise to 6,000 to 8,000 feet Wednesday into Thursday. By Thursday, significant precipitation totals are forecast, with 1 to 4 inches in the valleys and 5 to 8 inches in the mountains, with locally higher totals over mountain crests. Landslides in areas of steep terrain and minor flooding in urban and poor-drainage areas are possible. Storm drains and ditches may become clogged with debris. You may want to preemptively shovel snow away from your homes. Watch basements for moisture intrusion. |
| Alert: | Flood Watch |
| Area(s): | Mineral, MT |
| Effective: | 2025-12-08 @ 1:53 pm -> 2025-12-11 @ 6:00 pm |
| Onset: | 2025-12-08 @ 6:00 pm -> 2025-12-09 @ 3:15 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-08 @ 1:53 pm |
| Headline: | Flood Watch issued December 8 at 12:53PM MST until December 11 at 5:00PM MST by NWS Missoula MT |
| Description: |
Near-record precipitation is possible this week as two Atmospheric Rivers will move through the region. The first one arrives today and continues through Tuesday, followed by a second, stronger one Tuesday night through Thursday. Between 4 and 10 inches of moderate to heavy rain are expected in the mountains. For some locations, near record rainfall amounts are possible. The rain, falling on the current snowpack, combined with mild nighttime temperatures will increase snowmelt. Flows in rivers may increase quickly and reach critical levels. * WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...A portion of west central Montana, including the following county, Mineral. * WHEN...From 5 PM MST this afternoon through Thursday afternoon. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. People, structures, and roads located below steep slopes, in canyons, and near the mouths of canyons may be at risk from landslides. * ADDITIONAL DETAILS... - A prolonged atmospheric river is expected to bring periods of heavy rain to Mineral County, Monday night through Thursday. Rising snow levels will lead to a rain on snow event for elevations below 7,000 feet Monday night into Tuesday morning. The precipitation rates will briefly decrease Tuesday afternoon, before a second surge of moisture arrives Tuesday night into Thursday morning with snow levels rising to around 8,000 feet. By Thursday, significant precipitation totals are forecast, with 1 to 5 inches in the valleys and 5 to 8 inches in the mountains, with locally higher totals over mountain crests. Landslides in areas of steep terrain and minor flooding in urban and poor drainage areas is possible. - https://www.weather.gov/mso/hydrology |
| Alert: | Flood Watch |
| Area(s): | Flathead, MT; Lake, MT; Lincoln, MT; Sanders, MT |
| Effective: | 2025-12-08 @ 1:53 pm -> 2025-12-11 @ 6:00 pm |
| Onset: | 2025-12-08 @ 6:00 pm -> 2025-12-09 @ 3:15 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-08 @ 1:53 pm |
| Headline: | Flood Watch issued December 8 at 12:53PM MST until December 11 at 5:00PM MST by NWS Missoula MT |
| Description: |
Near-record precipitation is possible this week as two Atmospheric Rivers will move through the region. The first one arrives today and continues through Tuesday, followed by a second, stronger one Tuesday night through Thursday. Between 4 and 10 inches of moderate to heavy rain are expected in the mountains. For some locations, near record rainfall amounts are possible. The rain, falling on the current snowpack, combined with mild nighttime temperatures will increase snowmelt. Flows in rivers may increase quickly and reach critical levels. * WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...A portion of northwest Montana, including the following counties, Flathead, Lake, Lincoln and Sanders. * WHEN...From 5 PM MST this afternoon through Thursday afternoon. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Rockfall is possible. * ADDITIONAL DETAILS... - A prolonged atmospheric river event will bring periods of moderate to heavy rainfall to the region. Snow levels will rise to 6,000 to 7,000 feet during the first moisture plume on Tuesday. Snow levels will fall temporarily to 3,000 to 5,000 feet Tuesday night before rising again to 6,000 to 9,000 feet Wednesday and Thursday. Between 4 and 10 inches of total precipitation will fall this week in the mountains and upslope regions and between 1 and 4 inches of total rainfall is expected in the valleys. Landslides in areas of steep terrain and minor flooding in urban and poor drainage areas are possible. - https://www.weather.gov/mso/hydrology |