Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | High Wind Warning |
| Area(s): | Hill County |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-16 @ 12:00 pm |
| Onset: | 2025-12-15 @ 1:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Warning issued December 15 at 3:10AM MST until December 16 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Hill County. * WHEN...From noon today to 11 AM MST Tuesday. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Winds intensify this afternoon with a period of stronger gusts developing tonight. |
| Alert: | High Wind Watch |
| Area(s): | East Glacier Park Region; Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Southern Rocky Mountain Front; Southern High Plains |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-18 @ 12:00 am |
| Onset: | 2025-12-16 @ 9:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Watch issued December 15 at 3:10AM MST until December 17 at 11:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the High Wind Warning, southwest winds 35 to 45 mph with gusts up to 85 mph along and west of Highway 89 and up to 70 mph elsewhere. For the High Wind Watch, southwest winds 35 to 45 mph with gusts up to 85 mph possible along and west of Highway 89 and up to 70 mph elsewhere. * WHERE...The Rocky Mountain Front and adjacent foothills and plains, Eastern Glacier, Western Toole, and Central Pondera Counties, and Eastern Toole and Liberty Counties. * WHEN...For the High Wind Warning, until 8 AM MST Tuesday. For the High Wind Watch, from Tuesday evening through Wednesday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Watch |
| Area(s): | Cascade County below 5000ft; Judith Basin County and Judith Gap |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-18 @ 12:00 am |
| Onset: | 2025-12-16 @ 9:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Watch issued December 15 at 3:10AM MST until December 17 at 11:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the High Wind Warning, southwest winds 30 to 40 mph with gusts up to 65 mph expected. For the High Wind Watch, southwest winds 35 to 45 mph with gusts up to 75 mph possible. * WHERE...Cascade County below 5000ft and Judith Basin County and Judith Gap. * WHEN...For the High Wind Warning, from noon today to 11 AM MST Tuesday. For the High Wind Watch, from Tuesday evening through Wednesday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Watch |
| Area(s): | Fergus County below 4500ft; Snowy and Judith Mountains |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-18 @ 12:00 am |
| Onset: | 2025-12-16 @ 9:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Watch issued December 15 at 3:10AM MST until December 17 at 11:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the High Wind Warning, west winds 25 to 35 mph with gusts up to 60 mph expected. For the High Wind Watch, west winds 30 to 40 mph with gusts up to 65 mph possible. * WHERE...Snowy and Judith Mountains and Fergus County below 4500ft. * WHEN...For the High Wind Warning, from noon today to 11 AM MST Tuesday. For the High Wind Watch, from Tuesday evening through Wednesday 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...Winds intensify this afternoon with a period of stronger gusts developing tonight through Tuesday morning. A second wind event is likely to develop on Wednesday. |
| Alert: | High Wind Watch |
| Area(s): | Gates of the Mountains; Helena Valley; Big Belt, Bridger and Castle Mountains; Meagher County Valleys; Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-18 @ 12:00 am |
| Onset: | 2025-12-16 @ 9:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Watch issued December 15 at 3:10AM MST until December 17 at 11:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Southwest winds 30 to 40 mph with gusts up to 65 mph possible. * WHERE...The Interstate 90 Corridor between Bozeman and Whitehall, Gates of the Mountains, Helena Valley, Big Belt, Bridger and Castle Mountains, Meagher County Valleys, Elkhorn and Boulder Mountains, Canyon Ferry Area, and Madison River Valley. * WHEN...From Tuesday evening through Wednesday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Watch |
| Area(s): | Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Upper Blackfoot and MacDonald Pass; Little Belt and Highwood Mountains |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-18 @ 12:00 am |
| Onset: | 2025-12-16 @ 9:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Watch issued December 15 at 3:10AM MST until December 17 at 11:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the High Wind Warning, southwest winds 35 to 40 mph with gusts up to 65 mph expected. For the High Wind Watch, west winds 35 to 50 mph with gusts up to 75 mph possible. * WHERE...Eastern Pondera and Eastern Teton Counties, Western and Central Chouteau County, Bears Paw Mountains and Southern Blaine, Upper Blackfoot and MacDonald Pass, and Little Belt and Highwood Mountains. * WHEN...For the High Wind Warning, from noon today to 11 AM MST Tuesday. For the High Wind Watch, from Tuesday evening through Wednesday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | East Glacier Park Region; Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Southern Rocky Mountain Front; Southern High Plains |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-16 @ 9:00 am |
| Onset: | 2025-12-15 @ 6:00 am -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Warning issued December 15 at 3:10AM MST until December 16 at 8:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the High Wind Warning, southwest winds 35 to 45 mph with gusts up to 85 mph along and west of Highway 89 and up to 70 mph elsewhere. For the High Wind Watch, southwest winds 35 to 45 mph with gusts up to 85 mph possible along and west of Highway 89 and up to 70 mph elsewhere. * WHERE...The Rocky Mountain Front and adjacent foothills and plains, Eastern Glacier, Western Toole, and Central Pondera Counties, and Eastern Toole and Liberty Counties. * WHEN...For the High Wind Warning, until 8 AM MST Tuesday. For the High Wind Watch, from Tuesday evening through Wednesday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | Northern Blaine County |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-16 @ 12:00 pm |
| Onset: | 2025-12-15 @ 1:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Warning issued December 15 at 3:10AM MST until December 16 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...West winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Northern Blaine County. * WHEN...From noon today to 11 AM MST Tuesday. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Winds intensify this afternoon with a period of stronger gusts developing tonight. |
| Alert: | High Wind Warning |
| Area(s): | Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Upper Blackfoot and MacDonald Pass; Little Belt and Highwood Mountains |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-16 @ 12:00 pm |
| Onset: | 2025-12-15 @ 1:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Warning issued December 15 at 3:10AM MST until December 16 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the High Wind Warning, southwest winds 35 to 40 mph with gusts up to 65 mph expected. For the High Wind Watch, west winds 35 to 50 mph with gusts up to 75 mph possible. * WHERE...Eastern Pondera and Eastern Teton Counties, Western and Central Chouteau County, Bears Paw Mountains and Southern Blaine, Upper Blackfoot and MacDonald Pass, and Little Belt and Highwood Mountains. * WHEN...For the High Wind Warning, from noon today to 11 AM MST Tuesday. For the High Wind Watch, from Tuesday evening through Wednesday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | Cascade County below 5000ft; Judith Basin County and Judith Gap |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-16 @ 12:00 pm |
| Onset: | 2025-12-15 @ 1:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Warning issued December 15 at 3:10AM MST until December 16 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the High Wind Warning, southwest winds 30 to 40 mph with gusts up to 65 mph expected. For the High Wind Watch, southwest winds 35 to 45 mph with gusts up to 75 mph possible. * WHERE...Cascade County below 5000ft and Judith Basin County and Judith Gap. * WHEN...For the High Wind Warning, from noon today to 11 AM MST Tuesday. For the High Wind Watch, from Tuesday evening through Wednesday evening. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | Fergus County below 4500ft; Snowy and Judith Mountains |
| Effective: | 2025-12-15 @ 4:10 am -> 2025-12-16 @ 12:00 pm |
| Onset: | 2025-12-15 @ 1:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 4:10 am |
| Headline: | High Wind Warning issued December 15 at 3:10AM MST until December 16 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...For the High Wind Warning, west winds 25 to 35 mph with gusts up to 60 mph expected. For the High Wind Watch, west winds 30 to 40 mph with gusts up to 65 mph possible. * WHERE...Snowy and Judith Mountains and Fergus County below 4500ft. * WHEN...For the High Wind Warning, from noon today to 11 AM MST Tuesday. For the High Wind Watch, from Tuesday evening through Wednesday 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...Winds intensify this afternoon with a period of stronger gusts developing tonight through Tuesday morning. A second wind event is likely to develop on Wednesday. |
| Alert: | Winter Storm Watch |
| Area(s): | East Glacier Park Region; Southern Rocky Mountain Front |
| Effective: | 2025-12-15 @ 3:50 am -> 2025-12-18 @ 12:00 am |
| Onset: | 2025-12-16 @ 9:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2025-12-15 @ 3:50 am |
| Headline: | Winter Storm Watch issued December 15 at 2:50AM MST until December 17 at 11:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations between 8 and 16 inches possible. Winds could gust as high as 85 mph. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...From Tuesday evening through Wednesday evening. * IMPACTS...Travel could be very difficult to dangerous and tire chains may be required for some vehicles. Visibility may drop below 1/4 mile at times due to falling and blowing snow. Those in the backcountry should ensure they are prepared for dangerous conditions. |
| Alert: | High Wind Warning |
| Area(s): | Crazy Mountains |
| Effective: | 2025-12-15 @ 3:27 am -> 2025-12-16 @ 3:00 pm |
| Onset: | 2025-12-15 @ 6:00 pm -> 2025-12-16 @ 3:30 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-15 @ 3:27 am |
| Headline: | High Wind Warning issued December 15 at 2:27AM MST until December 16 at 2:00PM MST by NWS Billings MT |
| Description: |
* WHAT...West winds 40 to 55 mph with gusts up to 85 mph expected. * WHERE...Crazy Mountains. * WHEN...From 5 PM this afternoon to 2 PM MST Tuesday. * IMPACTS...Recreation in the high country will be impacted. * ADDITIONAL DETAILS...Additional periods of strong winds are expected Wednesday into Thursday. |
| Alert: | High Wind Warning |
| Area(s): | Livingston Area; Beartooth Foothills |
| Effective: | 2025-12-15 @ 3:27 am -> 2025-12-16 @ 12:00 pm |
| Onset: | 2025-12-15 @ 6:00 pm -> 2025-12-16 @ 3:30 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-15 @ 3:27 am |
| Headline: | High Wind Warning issued December 15 at 2:27AM MST until December 16 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...For the Wind Advisory, southwest winds 25 to 35 mph with gusts up to 65 mph occurring. For the High Wind Warning, southwest winds 35 to 50 mph with gusts to 75 mph expected. * WHERE...Beartooth Foothills and Livingston Area. * WHEN...For the Wind Advisory, until 5 PM MST this afternoon. For the High Wind Warning, from 5 PM this afternoon to 11 AM MST Tuesday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Strong crosswinds will make travel difficult along Interstate 90 from Livingston to Big Timber and roads along the Beartooth Foothills. * ADDITIONAL DETAILS...Additional periods of strong winds are expected Wednesday into Thursday. |
| Alert: | Wind Advisory |
| Area(s): | Livingston Area; Beartooth Foothills |
| Effective: | 2025-12-15 @ 3:27 am -> 2025-12-15 @ 6:00 pm |
| Onset: | 2025-12-15 @ 3:27 am -> 2025-12-16 @ 3:30 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-15 @ 3:27 am |
| Headline: | Wind Advisory issued December 15 at 2:27AM MST until December 15 at 5:00PM MST by NWS Billings MT |
| Description: |
* WHAT...For the Wind Advisory, southwest winds 25 to 35 mph with gusts up to 65 mph occurring. For the High Wind Warning, southwest winds 35 to 50 mph with gusts to 75 mph expected. * WHERE...Beartooth Foothills and Livingston Area. * WHEN...For the Wind Advisory, until 5 PM MST this afternoon. For the High Wind Warning, from 5 PM this afternoon to 11 AM MST Tuesday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Strong crosswinds will make travel difficult along Interstate 90 from Livingston to Big Timber and roads along the Beartooth Foothills. * ADDITIONAL DETAILS...Additional periods of strong winds are expected Wednesday into Thursday. |
| Alert: | High Wind Warning |
| Area(s): | Judith Gap; Northern Sweet Grass; Melville Foothills; Southern Wheatland |
| Effective: | 2025-12-15 @ 3:27 am -> 2025-12-16 @ 3:00 pm |
| Onset: | 2025-12-15 @ 6:00 pm -> 2025-12-16 @ 3:30 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-15 @ 3:27 am |
| Headline: | High Wind Warning issued December 15 at 2:27AM MST until December 16 at 2:00PM MST by NWS Billings MT |
| Description: |
* WHAT...West winds 35 to 45 mph with gusts up to 70 mph expected. * WHERE...Judith Gap, Southern Wheatland, Melville Foothills, and Northern Sweet Grass. * WHEN...From 5 PM this afternoon to 2 PM MST Tuesday. * IMPACTS...Strong crosswinds will make travel difficult along Highway 191 from Big Timber through Judith Gap. Localized power outages and downed trees are possible. * ADDITIONAL DETAILS...Additional periods of strong winds are expected Wednesday into Thursday. |
| Alert: | High Wind Warning |
| Area(s): | Central and Southeast Phillips; Northern Phillips; Southwest Phillips |
| Effective: | 2025-12-15 @ 3:19 am -> 2025-12-16 @ 12:00 pm |
| Onset: | 2025-12-15 @ 6:00 pm -> 2025-12-15 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2025-12-15 @ 3:19 am |
| Headline: | High Wind Warning issued December 15 at 2:19AM MST until December 16 at 11:00AM MST by NWS Glasgow MT |
| Description: |
* WHAT...West winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE...Phillips County. * WHEN...From 5 PM this afternoon to 11 AM MST Tuesday. * IMPACTS...High winds may move loose snow, damage property, and cause power bumps. Travel could be difficult, especially for high profile vehicles. |
| Alert: | Wind Advisory |
| Area(s): | Kootenai/Cabinet Region; Lower Clark Fork Region |
| Effective: | 2025-12-15 @ 2:50 am -> 2025-12-16 @ 4:00 am |
| Onset: | 2025-12-15 @ 6:00 pm -> 2025-12-16 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-15 @ 2:50 am |
| Headline: | Wind Advisory issued December 15 at 1:50AM MST until December 16 at 3:00AM MST by NWS Missoula MT |
| Description: |
* WHAT...For the Wind Advisory, southwest winds 20 to 30 mph with gusts up to 40 mph expected. For the High Wind Watch, southwest winds 25 to 40 mph with gusts up to 60 mph possible. * WHERE...Kootenai/Cabinet Region and Lower Clark Fork Region. * WHEN...For the Wind Advisory, from 5 PM this afternoon to 3 AM MST Tuesday. For the High Wind Watch, from late Tuesday night through Wednesday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...For the High Wind Watch, bursts of heavy snow and winter driving conditions are possible in higher valleys, over mountain passes, and along the Divide. |
| Alert: | High Wind Watch |
| Area(s): | Western Lemhi County; Eastern Lemhi County; Missoula/Bitterroot Valleys; Bitterroot/Sapphire Mountains; Butte/Blackfoot Region |
| Effective: | 2025-12-15 @ 2:50 am -> 2025-12-17 @ 6:00 pm |
| Onset: | 2025-12-17 @ 6:00 am -> 2025-12-16 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-15 @ 2:50 am |
| Headline: | High Wind Watch issued December 15 at 1:50AM MST until December 17 at 5:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...West winds 25 to 40 mph with gusts over 60 mph possible. * WHERE...In Idaho, Eastern Lemhi County and Western Lemhi County. In Montana, Bitterroot/Sapphire Mountains, Butte/Blackfoot Region, and Missoula/Bitterroot Valleys. * WHEN...From late Tuesday night through Wednesday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Bursts of heavy snow and winter driving conditions are possible in higher valleys, over mountain passes, and along the Divide. |
| Alert: | High Wind Watch |
| Area(s): | Potomac/Seeley Lake Region |
| Effective: | 2025-12-15 @ 2:50 am -> 2025-12-17 @ 6:00 pm |
| Onset: | 2025-12-17 @ 6:00 am -> 2025-12-16 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-15 @ 2:50 am |
| Headline: | High Wind Watch issued December 15 at 1:50AM MST until December 17 at 5:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...For the Wind Advisory, west winds 25 to 35 mph with gusts up to 40 mph expected. For the High Wind Watch, west winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Potomac/Seeley Lake Region. * WHEN...For the Wind Advisory, from 7 PM this evening to 5 AM MST Tuesday. For the High Wind Watch, from late Tuesday night through Wednesday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | High Wind Watch |
| Area(s): | Flathead/Mission Valleys |
| Effective: | 2025-12-15 @ 2:50 am -> 2025-12-17 @ 6:00 pm |
| Onset: | 2025-12-17 @ 6:00 am -> 2025-12-16 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-15 @ 2:50 am |
| Headline: | High Wind Watch issued December 15 at 1:50AM MST until December 17 at 5:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...For the Wind Advisory, southwest winds 15 to 25 mph with gusts up to 40 mph expected. For the High Wind Watch, southwest winds 25 to 40 mph with gusts up to 60 mph possible. * WHERE...Flathead/Mission Valleys. * WHEN...For the Wind Advisory, from 7 PM this evening to 5 AM MST Tuesday. For the High Wind Watch, from late Tuesday night through Wednesday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...For the High Wind Watch, bursts of heavy snow and winter driving conditions are possible in higher valleys, over mountain passes, and along the Divide. |
| Alert: | High Wind Watch |
| Area(s): | Kootenai/Cabinet Region; Lower Clark Fork Region |
| Effective: | 2025-12-15 @ 2:50 am -> 2025-12-17 @ 6:00 pm |
| Onset: | 2025-12-17 @ 6:00 am -> 2025-12-16 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-15 @ 2:50 am |
| Headline: | High Wind Watch issued December 15 at 1:50AM MST until December 17 at 5:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...For the Wind Advisory, southwest winds 20 to 30 mph with gusts up to 40 mph expected. For the High Wind Watch, southwest winds 25 to 40 mph with gusts up to 60 mph possible. * WHERE...Kootenai/Cabinet Region and Lower Clark Fork Region. * WHEN...For the Wind Advisory, from 5 PM this afternoon to 3 AM MST Tuesday. For the High Wind Watch, from late Tuesday night through Wednesday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...For the High Wind Watch, bursts of heavy snow and winter driving conditions are possible in higher valleys, over mountain passes, and along the Divide. |
| Alert: | Wind Advisory |
| Area(s): | Potomac/Seeley Lake Region |
| Effective: | 2025-12-15 @ 2:50 am -> 2025-12-16 @ 6:00 am |
| Onset: | 2025-12-15 @ 8:00 pm -> 2025-12-16 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-15 @ 2:50 am |
| Headline: | Wind Advisory issued December 15 at 1:50AM MST until December 16 at 5:00AM MST by NWS Missoula MT |
| Description: |
* WHAT...For the Wind Advisory, west winds 25 to 35 mph with gusts up to 40 mph expected. For the High Wind Watch, west winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Potomac/Seeley Lake Region. * WHEN...For the Wind Advisory, from 7 PM this evening to 5 AM MST Tuesday. For the High Wind Watch, from late Tuesday night through Wednesday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. 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): | Flathead/Mission Valleys |
| Effective: | 2025-12-15 @ 2:50 am -> 2025-12-16 @ 6:00 am |
| Onset: | 2025-12-15 @ 8:00 pm -> 2025-12-16 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-15 @ 2:50 am |
| Headline: | Wind Advisory issued December 15 at 1:50AM MST until December 16 at 5:00AM MST by NWS Missoula MT |
| Description: |
* WHAT...For the Wind Advisory, southwest winds 15 to 25 mph with gusts up to 40 mph expected. For the High Wind Watch, southwest winds 25 to 40 mph with gusts up to 60 mph possible. * WHERE...Flathead/Mission Valleys. * WHEN...For the Wind Advisory, from 7 PM this evening to 5 AM MST Tuesday. For the High Wind Watch, from late Tuesday night through Wednesday afternoon. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...For the High Wind Watch, bursts of heavy snow and winter driving conditions are possible in higher valleys, over mountain passes, and along the Divide. |
| Alert: | Wind Advisory |
| Area(s): | West Glacier Region |
| Effective: | 2025-12-15 @ 2:50 am -> 2025-12-16 @ 6:00 am |
| Onset: | 2025-12-15 @ 8:00 pm -> 2025-12-16 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-15 @ 2:50 am |
| Headline: | Wind Advisory issued December 15 at 1:50AM MST until December 16 at 5:00AM MST by NWS Missoula MT |
| Description: |
* WHAT...Southwest winds 20 to 30 mph with gusts up to 40 mph expected. * WHERE...West Glacier Region. * WHEN...From 7 PM this evening to 5 AM MST Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. |
| Alert: | Flash Flood Watch |
| Area(s): | Kootenai/Cabinet Region |
| Effective: | 2025-12-14 @ 9:22 pm -> 2025-12-17 @ 3:00 pm |
| Onset: | 2025-12-14 @ 9:22 pm -> 2025-12-17 @ 3:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-14 @ 9:22 pm |
| Headline: | Flash Flood Watch issued December 14 at 8:22PM MST until December 17 at 2:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...Flash Flooding caused by a potential failure of the Lower Flower Creek Diversion Structure related to additional rainfall early this week. Officials are currently working to mitigate this potential hazard by releasing additional water to take pressure off the diversion structure; these water flows are expected to stay below peak levels during the flood event last Thursday. * WHERE...Libby, MT. * WHEN...Through Wednesday afternoon. * IMPACTS...A failure of the diversion structure may result in flooding of urban areas. * ADDITIONAL DETAILS... - Recent heavy rain caused damage to the Lower Flower Creek Diversion Structure. Forecast rainfall has the potential to cause additional damage to the structure, bringing the risk for uncontrolled water released into the town of Libby. The main Flower Creek Dam is stable and functioning as designed. - https://www.weather.gov/mso/hydrology |
| Alert: | Winter Storm Watch |
| Area(s): | West Glacier Region |
| Effective: | 2025-12-14 @ 2:27 pm -> 2025-12-18 @ 12:00 am |
| Onset: | 2025-12-16 @ 9:00 pm -> 2025-12-16 @ 2:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-14 @ 2:27 pm |
| Headline: | Winter Storm Watch issued December 14 at 1:27PM MST until December 17 at 11:00PM MST by NWS Missoula MT |
| Description: |
* WHAT...Heavy snow and damaging winds possible. There is a chance of major winter weather impacts. Total snow accumulations between 1 and 5 inches in the valleys and 8 to 15 inches possible at high elevations, including Marias Pass. Winds could gust over 50 mph. * WHERE...Highway 83 Bigfork to Swan Lake, Bad Rock Canyon, Essex, Polebridge, Marias Pass, and Glacier National Park. * WHEN...From Tuesday evening through Wednesday evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Wednesday morning and evening commutes, especially over higher passes. Very strong winds could cause extensive tree damage. |
| Alert: | Hydrologic Outlook |
| Area(s): | Flathead, MT; Lincoln, MT; Sanders, MT |
| Effective: | 2025-12-14 @ 1:16 pm |
| Onset: | 2025-12-14 @ 1:16 pm -> 2025-12-16 @ 1:00 pm |
| Severity: | Unknown |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2025-12-14 @ 1:16 pm |
| Headline: | Hydrologic Outlook issued December 14 at 12:16PM MST by NWS Missoula MT |
| Description: |
ESFMSO NORTHWEST MONTANA A prolonged Atmospheric River is expected to impact Western Montana and North-Central Idaho from Monday through Wednesday, bringing moderate to heavy precipitation. Snow levels are anticipated to start around 7,000 feet on Monday before falling to valley floors behind a cold front early Wednesday. The most likely rainfall scenario forecasts 0.75 to 1.25 inches for the valleys of Lincoln, Mineral, Sanders and Flathead Counties in northwest Montana. 1.50 to 3 inches expected in the mountains. A high-end scenario could bring a total of 4 inches to the Cabinet and Purcell Mountains. Due to already saturated ground, rainfall will increase the risk of rock and landslides across northwest Montana. Continue to monitor the latest forecast updates as this system approaches. |