Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Winter Storm Watch |
| Area(s): | Little Belt and Highwood Mountains; Big Belt, Bridger and Castle Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-04-20 @ 1:51 pm -> 2026-04-23 @ 7:00 pm |
| Onset: | 2026-04-22 @ 7:00 pm -> 2026-04-21 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-04-20 @ 1:51 pm |
| Headline: | Winter Storm Watch issued April 20 at 12:51PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations between 5 and 10 inches, with isolated higher amounts possible. Winds could gust as high as 50 mph. * WHERE...Big Belt, Bridger and Castle Mountains, Little Belt and Highwood Mountains, and Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Strong winds could cause tree or power line damage. |
| Alert: | Winter Storm Watch |
| Area(s): | Judith Basin County and Judith Gap; Fergus County below 4500ft; Snowy and Judith Mountains |
| Effective: | 2026-04-20 @ 1:51 pm -> 2026-04-23 @ 7:00 pm |
| Onset: | 2026-04-23 @ 1:00 am -> 2026-04-21 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-04-20 @ 1:51 pm |
| Headline: | Winter Storm Watch issued April 20 at 12:51PM MDT until April 23 at 6:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations of 4 to 8 inches, with isolated higher amounts possible. Winds could gust as high as 60 mph. * WHERE...Snowy and Judith Mountains, Fergus County below 4500ft, and Judith Basin County and Judith Gap. * WHEN...From late Wednesday night through Thursday afternoon. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Plan on slippery road conditions. Strong winds could cause tree or power line damage. |