Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Blizzard Warning |
| Area(s): | Northern Valley |
| Effective: | 2026-04-23 @ 6:32 am -> 2026-04-23 @ 4:00 pm |
| Onset: | 2026-04-23 @ 6:32 am -> 2026-04-23 @ 4:00 pm |
| Severity: | Extreme |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-04-23 @ 6:32 am |
| Headline: | Blizzard Warning issued April 23 at 5:32AM MDT until April 23 at 3:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Blizzard conditions. Snow accumulations up to 6 inches. Winds gusting as high as 60 mph. * WHERE...Northern Valley County. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Visibilities will drop below 1/4 mile due to falling and blowing snow. Plan on slippery road conditions. The hazardous conditions will impact this morning's commute. Gusty winds could bring down tree branches. |
| Alert: | Blizzard Warning |
| Area(s): | Central and Southern Valley; McCone |
| Effective: | 2026-04-23 @ 6:32 am -> 2026-04-23 @ 4:00 pm |
| Onset: | 2026-04-23 @ 6:32 am -> 2026-04-23 @ 4:00 pm |
| Severity: | Extreme |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-04-23 @ 6:32 am |
| Headline: | Blizzard Warning issued April 23 at 5:32AM MDT until April 23 at 3:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Blizzard conditions. Snow accumulations up to 3 inches. Winds gusting as high as 60 mph. * WHERE...Central and Southern Valley and McCone Counties. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Visibilities will drop below 1/4 mile due to falling and blowing snow. Plan on slippery road conditions. The hazardous conditions will impact this morning's commute. Gusty winds could bring down tree branches. |
| Alert: | Winter Weather Advisory |
| Area(s): | Central and Southeast Phillips; Western Roosevelt; Garfield; Northern Phillips |
| Effective: | 2026-04-23 @ 6:32 am -> 2026-04-23 @ 4:00 pm |
| Onset: | 2026-04-23 @ 6:32 am -> 2026-04-23 @ 4:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-04-23 @ 6:32 am |
| Headline: | Winter Weather Advisory issued April 23 at 5:32AM MDT until April 23 at 3:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Wet snow. Snow accumulations up to 3 inches. Winds gusting as high as 60 mph. * WHERE...Phillips, Garfield, and Western Roosevelt Counties. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact this morning's commute. Strong winds could cause tree damage. |
| Alert: | Winter Weather Advisory |
| Area(s): | Daniels |
| Effective: | 2026-04-23 @ 6:32 am -> 2026-04-23 @ 4:00 pm |
| Onset: | 2026-04-23 @ 6:32 am -> 2026-04-23 @ 4:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-04-23 @ 6:32 am |
| Headline: | Winter Weather Advisory issued April 23 at 5:32AM MDT until April 23 at 3:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Snow. Additional snow accumulations between 1 and 3 inches. Winds gusting as high as 55 mph. * WHERE...Daniels County. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday morning commute. Strong winds could cause tree damage. |
| Alert: | Winter Weather Advisory |
| Area(s): | Southern Rocky Mountain Front; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Helena Valley; Elkhorn and Boulder Mountains; Northwest Beaverhead County; Ruby Mountains and Southern Beaverhead Mountains |
| Effective: | 2026-04-23 @ 6:11 am -> 2026-04-24 @ 1:00 pm |
| Onset: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-23 @ 6:11 am |
| Headline: | Winter Weather Advisory issued April 23 at 5:11AM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations up to 3 inches at lower elevations and 8 inches in the mountains. Winds gusting as high as 40 mph. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...Until noon MDT Friday. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Thursday morning and evening commutes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will continue to fall to lower elevations through this morning. |
| Alert: | Winter Weather Advisory |
| Area(s): | Bears Paw Mountains and Southern Blaine; Fergus County below 4500ft; Snowy and Judith Mountains |
| Effective: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Onset: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-23 @ 6:11 am |
| Headline: | Winter Weather Advisory issued April 23 at 5:11AM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 60 mph. * WHERE...Snowy and Judith Mountains, Bears Paw Mountains and Southern Blaine, and Fergus County below 4500ft. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Falling and or blowing snow may significantly reduce visibility at times. Those with outdoor plans should be prepared for dangerous outdoor conditions. * ADDITIONAL DETAILS...The wet snow may cause instances of power outages and or tree damage. |
| Alert: | Winter Weather Advisory |
| Area(s): | East Glacier Park Region; Northern High Plains |
| Effective: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Onset: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-23 @ 6:11 am |
| Headline: | Winter Weather Advisory issued April 23 at 5:11AM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations up to 3 inches at and above pass level with up to an additional inch at lower elevations. Winds gusting as high as 50 mph. * WHERE...Eastern Glacier National Park and adjacent foothills and plains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Falling and or blowing snow may significantly reduce visibility at times. Tire chains may be required for some vehicles if traveling through mountain passes. Those with outdoor plans should be prepared for dangerous outdoor conditions. * ADDITIONAL DETAILS...The heavy, wet snow may cause instances of power outages and or tree damage. |
| Alert: | Winter Storm Warning |
| Area(s): | Judith Basin County and Judith Gap |
| Effective: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Onset: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-23 @ 6:11 am |
| Headline: | Winter Storm Warning issued April 23 at 5:11AM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow. Additional snow accumulations up to 3 inches, with highest amounts across northwestern portions of Judith Basin County. Winds gusting as high as 50 mph. * WHERE...Judith Basin County and Judith Gap. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Falling and or blowing snow may significantly reduce visibility below a quarter mile at times. * ADDITIONAL DETAILS...The heavy, wet snow may cause instances of power outages and or tree damage. |
| Alert: | Winter Storm Warning |
| Area(s): | Little Belt and Highwood Mountains |
| Effective: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Onset: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-23 @ 6:11 am |
| Headline: | Winter Storm Warning issued April 23 at 5:11AM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow. Additional snow accumulations up to 5 inches. Winds gusting as high as 50 mph. * WHERE...Little Belt and Highwood Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Falling and or blowing snow may significantly reduce visibility below a quarter mile at times. Those with outdoor plans should be prepared for dangerous outdoor conditions. * ADDITIONAL DETAILS...The heavy, wet snow may cause instances of power outages and or tree damage. |
| Alert: | Winter Storm Warning |
| Area(s): | Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-04-23 @ 6:11 am -> 2026-04-24 @ 1:00 pm |
| Onset: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-23 @ 6:11 am |
| Headline: | Winter Storm Warning issued April 23 at 5:11AM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow. Additional snow accumulations between 6 and 12 inches. Winds gusting as high as 40 mph. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...Until noon MDT Friday. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Falling and or blowing snow may significantly reduce visibility at times. Those with outdoor plans should be prepared for dangerous outdoor conditions. * ADDITIONAL DETAILS...The heavy, wet snow may cause instances of power outages and or tree damage. |
| Alert: | Winter Weather Advisory |
| Area(s): | Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Beaverhead and Western Madison below 6000ft |
| Effective: | 2026-04-23 @ 6:11 am -> 2026-04-24 @ 1:00 pm |
| Onset: | 2026-04-23 @ 7:00 pm -> 2026-04-23 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-23 @ 6:11 am |
| Headline: | Winter Weather Advisory issued April 23 at 5:11AM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 1 and 3 inches. Winds gusting as high as 35 mph. * WHERE...The Interstate 90 Corridor between Bozeman and Whitehall, The Madison and Beaverhead River Valleys, and Canyon Ferry Area. * WHEN...From 6 PM this evening to noon MDT Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Big Belt, Bridger and Castle Mountains |
| Effective: | 2026-04-23 @ 6:11 am -> 2026-04-24 @ 1:00 pm |
| Onset: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-23 @ 6:11 am |
| Headline: | Winter Weather Advisory issued April 23 at 5:11AM MDT until April 24 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations between 3 and 7 inches at and near pass level, with greater amounts above pass level. Winds gusting as high as 45 mph. * WHERE...Big Belt, Bridger and Castle Mountains. * WHEN...Until noon MDT Friday. * IMPACTS...Expect difficult driving conditions due to slush or snow covered roadways. Those in the backcountry should ensure they are prepared for dangerous conditions. * ADDITIONAL DETAILS...The wet snow may cause isolated instances of power outages and or tree damage. |
| Alert: | Winter Weather Advisory |
| Area(s): | Cascade County below 5000ft |
| Effective: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 1:00 pm |
| Onset: | 2026-04-23 @ 6:11 am -> 2026-04-23 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-23 @ 6:11 am |
| Headline: | Winter Weather Advisory issued April 23 at 5:11AM MDT until April 23 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations up to 4 inches in southern and southeastern portions of the county. Winds gusting as high as 40 mph. * WHERE...Cascade County below 5000ft. * WHEN...Until noon MDT today. * IMPACTS...Expect highly variable road conditions, including difficult driving due to slush or snow covered roadways. * ADDITIONAL DETAILS...Little snow accumulation is forecast in Great Falls. |
| Alert: | Winter Storm Warning |
| Area(s): | Absaroka/Beartooth Mountains |
| Effective: | 2026-04-23 @ 5:04 am -> 2026-04-24 @ 7:00 am |
| Onset: | 2026-04-23 @ 5:04 am -> 2026-04-24 @ 5:15 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-04-23 @ 5:04 am |
| Headline: | Winter Storm Warning issued April 23 at 4:04AM MDT until April 24 at 6:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Periods of moderate to heavy snow and blowing snow. Total snow accumulations between 10 and 18 inches. Winds gusting as high as 60 mph. * WHERE...Absaroka/Beartooth Mountains. * WHEN...Until 6 AM MDT Friday. * IMPACTS...Recreation in the high country will be impacted by heavy accumulating snow. Expect whiteout conditions due to high winds and blowing snow. * ADDITIONAL DETAILS...The strongest winds are forecast through this morning. Avalanche danger will increase due to the heavy snow and strong winds. |
| Alert: | Winter Storm Warning |
| Area(s): | Crazy Mountains |
| Effective: | 2026-04-23 @ 5:04 am -> 2026-04-24 @ 7:00 am |
| Onset: | 2026-04-23 @ 5:04 am -> 2026-04-24 @ 5:15 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-04-23 @ 5:04 am |
| Headline: | Winter Storm Warning issued April 23 at 4:04AM MDT until April 24 at 6:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Periods of moderate to heavy snow and blowing snow. Total snow accumulations of 12 to 18 inches. Winds gusting as high as 70 mph. * WHERE...Crazy Mountains. * WHEN...Until 6 AM MDT Friday. * IMPACTS...Recreation in the high country will be impacted by heavy accumulating snow. Expect whiteout conditions due to high winds and blowing snow. * ADDITIONAL DETAILS...The strongest winds are forecast through this morning. Avalanche danger will increase due to the heavy snow and strong winds. |
| Alert: | Winter Weather Advisory |
| Area(s): | Red Lodge Foothills; Beartooth Foothills |
| Effective: | 2026-04-23 @ 5:04 am -> 2026-04-24 @ 7:00 pm |
| Onset: | 2026-04-23 @ 4:00 pm -> 2026-04-24 @ 5:15 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-04-23 @ 5:04 am |
| Headline: | Winter Weather Advisory issued April 23 at 4:04AM MDT until April 24 at 6:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 2 and 5 inches. * WHERE...Beartooth Foothills and Red Lodge Foothills. * WHEN...From 3 PM this afternoon to 6 PM MDT Friday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous tonight into Friday morning. The hazardous conditions will impact the Thursday evening and Friday morning commutes. * ADDITIONAL DETAILS...The heaviest snowfall is expected late this afternoon through early Friday morning. Additional snow showers are anticipated Friday afternoon. |
| Alert: | High Wind Warning |
| Area(s): | Daniels; Sheridan; Western Roosevelt; McCone; Richland; Dawson; Prairie; Wibaux; Eastern Roosevelt |
| Effective: | 2026-04-23 @ 1:49 am -> 2026-04-23 @ 9:00 pm |
| Onset: | 2026-04-23 @ 7:00 am -> 2026-04-23 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-04-23 @ 1:49 am |
| Headline: | High Wind Warning issued April 23 at 12:49AM MDT until April 23 at 8:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Daniels, Dawson, Roosevelt, McCone, Prairie, Richland, Sheridan, and Wibaux Counties. * WHEN...From 6 AM this morning to 8 PM MDT this evening. * IMPACTS...High winds may move loose debris, damage property, and cause power bumps. Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; Northern Phillips; Southwest Phillips; Northern Valley |
| Effective: | 2026-04-23 @ 1:49 am -> 2026-04-23 @ 9:00 pm |
| Onset: | 2026-04-23 @ 1:49 am -> 2026-04-23 @ 5:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-04-23 @ 1:49 am |
| Headline: | High Wind Warning issued April 23 at 12:49AM MDT until April 23 at 8:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Phillips, Valley, Garfield, and Petroleum Counties. * WHEN...Until 8 PM MDT this evening. * IMPACTS...High winds may move loose debris, damage property, and cause power bumps. Travel could be difficult, especially for high profile vehicles. |
| Alert: | High Wind Warning |
| Area(s): | Eastern Toole and Liberty; Hill County; Northern Blaine County; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Fergus County below 4500ft |
| Effective: | 2026-04-22 @ 11:57 pm -> 2026-04-23 @ 7:00 pm |
| Onset: | 2026-04-22 @ 11:57 pm -> 2026-04-23 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-04-22 @ 11:57 pm |
| Headline: | High Wind Warning issued April 22 at 10:57PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Northwesterly winds 30 to 40 mph with gusts up to 65 mph expected. * WHERE...Eastern Toole and Liberty Counties, Hill County, Northern Blaine County, Western and Central Chouteau County, Bears Paw Mountains and Southern Blaine, and Fergus County below 4500ft. * WHEN...Until 6 PM MDT Thursday. * 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 will be the over the southeast aspects of the Sweetgrass Hills, Bear's Paw, and Snowy Mountains. |
| Alert: | Winter Weather Advisory |
| Area(s): | Butte/Blackfoot Region |
| Effective: | 2026-04-21 @ 2:50 pm -> 2026-04-24 @ 1:00 pm |
| Onset: | 2026-04-22 @ 7:00 pm -> 2026-04-24 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-04-21 @ 2:50 pm |
| Headline: | Winter Weather Advisory issued April 21 at 1:50PM MDT until April 24 at 12:00PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 2 and 5 inches in the valleys, 5 to 10 inches at pass level, and over 12 inches in the high terrain. Winds gusting as high as 35 mph. * WHERE...Georgetown Lake, Butte, Highway 12 Garrison to Elliston, MacDonald Pass, and Homestake Pass. * WHEN...From 6 PM Wednesday to noon MDT Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. 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. The hazardous conditions could impact the Thursday morning and evening commutes, especially over higher passes. * ADDITIONAL DETAILS...The most impactful snow accumulations are most likely to occur Thursday evening through Friday morning. |
| Alert: | Winter Weather Advisory |
| Area(s): | Bitterroot/Sapphire Mountains |
| Effective: | 2026-04-21 @ 2:50 pm -> 2026-04-24 @ 1:00 pm |
| Onset: | 2026-04-22 @ 7:00 pm -> 2026-04-24 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-04-21 @ 2:50 pm |
| Headline: | Winter Weather Advisory issued April 21 at 1:50PM MDT until April 24 at 12:00PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 1 to 5 inches below 4000 feet, 6 to 10 inches at pass level and over 12 inches in the high terrain. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...From 6 PM Wednesday to noon MDT Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday morning and evening commutes, especially over higher passes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Potomac/Seeley Lake Region |
| Effective: | 2026-04-21 @ 2:50 pm -> 2026-04-24 @ 1:00 pm |
| Onset: | 2026-04-22 @ 7:00 pm -> 2026-04-24 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-04-21 @ 2:50 pm |
| Headline: | Winter Weather Advisory issued April 21 at 1:50PM MDT until April 24 at 12:00PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 2 and 4 inches in the valleys and 6 to 12 inches in the mountains. * WHERE...Highway 200 Bonner to Greenough, I-90 East Missoula to Bearmouth, and Highway 83 Seeley Lake to Condon. * WHEN...From 6 PM Wednesday to noon MDT Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. 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. The hazardous conditions could impact the Thursday morning and evening commutes, especially over higher passes. * ADDITIONAL DETAILS...The most impactful snow accumulations are most likely to occur Thursday evening through Friday morning. |
| Alert: | Winter Weather Advisory |
| Area(s): | West Glacier Region |
| Effective: | 2026-04-21 @ 2:50 pm -> 2026-04-23 @ 7:00 pm |
| Onset: | 2026-04-22 @ 7:00 pm -> 2026-04-23 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-04-21 @ 2:50 pm |
| Headline: | Winter Weather Advisory issued April 21 at 1:50PM MDT until April 23 at 6:00PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 1 to 3 inches below 4000 feet, 4 to 7 inches at pass level and over 10 inches in the high terrain. * WHERE...Glacier National Park, Marias Pass, Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, and Polebridge. * WHEN...From 6 PM Wednesday to 6 PM MDT Thursday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday morning and evening commutes, especially over higher passes. |