Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | West Glacier Region; Flathead/Mission Valleys; Butte/Blackfoot Region; Potomac/Seeley Lake Region |
| Effective: | 2025-12-06 @ 1:11 pm |
| Onset: | 2025-12-06 @ 1:11 pm -> 2025-12-06 @ 2:15 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2025-12-06 @ 1:11 pm |
| Headline: | Special Weather Statement issued December 6 at 12:11PM MST by NWS Missoula MT |
| Description: |
At 1211 PM MST, Doppler radar was tracking intense snow showers along a line extending from near Ronan to near Ovando. Movement was east at 10 mph. HAZARD...Visibility one-half mile or less. SOURCE...Radar indicated. IMPACT...Low visibility could result in dangerous driving conditions. Locations impacted include... Ronan, Ovando, Seeley Lake, Allentown, Helmville, Kicking Horse, Charlo, Fort Connah, Clearwater, and Woodworth. This includes the following highways... Highway 83 between mile markers 0 and 32. Highway 93 N between mile markers 34 and 48. Highway 200 E between mile markers 26 and 60. |
| Alert: | Winter Storm Warning |
| Area(s): | Little Belt and Highwood Mountains; Big Belt, Bridger and Castle Mountains |
| Effective: | 2025-12-06 @ 11:45 am -> 2025-12-06 @ 3:00 pm |
| Onset: | 2025-12-06 @ 11:45 am -> 2025-12-06 @ 3:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-06 @ 11:45 am |
| Headline: | Winter Storm Warning issued December 6 at 10:45AM MST until December 6 at 2:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow, diminishing to snow showers late this afternoon. Additional snow accumulations up to two inches. Wind gusts up to 35 mph. * WHERE...Big Belt, Bridger and Castle Mountains and Little Belt and Highwood Mountains. * WHEN...Until 2 PM MST this afternoon. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. |
| Alert: | Winter Storm Warning |
| Area(s): | Northwest Beaverhead County |
| Effective: | 2025-12-06 @ 11:45 am -> 2025-12-06 @ 6:00 pm |
| Onset: | 2025-12-06 @ 11:45 am -> 2025-12-06 @ 3:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-06 @ 11:45 am |
| Headline: | Winter Storm Warning issued December 6 at 10:45AM MST until December 6 at 5:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow, diminishing to snow showers this evening Additional snow accumulations up to 4 inches. Winds gusting as high as 40 mph. * WHERE...Northwest Beaverhead County. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult and tire chains may be required for some vehicles. Those in the backcountry should ensure they are prepared for dangerous conditions. Blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches. |
| Alert: | Winter Weather Advisory |
| Area(s): | East Glacier Park Region; Southern Rocky Mountain Front |
| Effective: | 2025-12-06 @ 11:45 am -> 2025-12-06 @ 10:00 pm |
| Onset: | 2025-12-06 @ 11:45 am -> 2025-12-06 @ 3:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-06 @ 11:45 am |
| Headline: | Winter Weather Advisory issued December 6 at 10:45AM MST until December 6 at 9:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations up to 5 inches. Winds gusting as high as 45 mph. * WHERE...The Continental Divide along the Rocky Mountain Front. * WHEN...Until 9 PM MST this evening. * IMPACTS...Travel could be very difficult and tire chains may be required for some vehicles. Those in the backcountry should ensure they are prepared for dangerous conditions. Blowing snow could significantly reduce visibility. Strong winds could cause tree damage. |
| Alert: | Winter Storm Warning |
| Area(s): | Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2025-12-06 @ 11:45 am -> 2025-12-06 @ 10:00 pm |
| Onset: | 2025-12-06 @ 11:45 am -> 2025-12-06 @ 3:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-06 @ 11:45 am |
| Headline: | Winter Storm Warning issued December 6 at 10:45AM MST until December 6 at 9:00PM MST by NWS Great Falls MT |
| Description: |
* WHAT...Snow. Additional snow accumulations up to 4 inches. Winds gusting as high as 35 mph. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...Until 9 PM MST this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. |
| Alert: | Winter Weather Advisory |
| Area(s): | Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains |
| Effective: | 2025-12-06 @ 2:50 am -> 2025-12-06 @ 3:00 pm |
| Onset: | 2025-12-06 @ 2:50 am -> 2025-12-06 @ 3:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-06 @ 2:50 am |
| Headline: | Winter Weather Advisory issued December 6 at 1:50AM MST until December 6 at 2:00PM MST by NWS Billings MT |
| Description: |
* WHAT...Occasional snow and blowing snow. Additional snow accumulations of 4 to 7 inches. Winds gusting as high as 40 mph. * WHERE...In Montana, Pryor/Northern Bighorn Mountains. In Wyoming, Northeast Bighorn Mountains. * WHEN...Until 2 PM MST this afternoon. * IMPACTS...Outdoor recreation will be impacted by wintry conditions. |
| Alert: | Winter Storm Warning |
| Area(s): | Absaroka/Beartooth Mountains; Crazy Mountains |
| Effective: | 2025-12-06 @ 2:50 am -> 2025-12-07 @ 1:00 am |
| Onset: | 2025-12-06 @ 2:50 am -> 2025-12-07 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-06 @ 2:50 am |
| Headline: | Winter Storm Warning issued December 6 at 1:50AM MST until December 7 at 12:00AM MST by NWS Billings MT |
| Description: |
* WHAT...Periods of moderate to heavy snow, strong winds and blowing snow. Additional snow accumulations between 8 and 15 inches. Winds gusting as high as 60 mph on the mountain tops. * WHERE...Absaroka/Beartooth Mountains and Crazy Mountains. * WHEN...Until midnight MST tonight. * IMPACTS...Mountain recreation will be impacted by heavy accumulating snow and blowing snow. * ADDITIONAL DETAILS...The heaviest snowfall will occur on west and northwest facing slopes, including the mountains near Cooke City. The mountains around Red Lodge will see much less snowfall, 1 to 5 inches. |