Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Madison River Valley; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-05-21 @ 9:34 am -> 2026-05-21 @ 12:00 pm |
| Onset: | 2026-05-21 @ 9:34 am |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-05-21 @ 9:34 am |
| Headline: | Special Weather Statement issued May 21 at 8:34AM MDT by NWS Great Falls MT |
| Description: |
Snow levels have largely dropped to around 6,000ft across Southwest Montana this morning, with further reduction in snow levels in the heaviest precipitation east of I-15 and south of I-90. Those traveling near pass level in these areas should be prepared for winter driving conditions this morning, largely in the form of reduced visibility and slushy roads. Precipitation diminishes later this morning and early afternoon. |
| Alert: | Winter Storm Warning |
| Area(s): | Absaroka/Beartooth Mountains |
| Effective: | 2026-05-21 @ 2:15 am -> 2026-05-21 @ 7:00 pm |
| Onset: | 2026-05-21 @ 2:15 am -> 2026-05-21 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-05-21 @ 2:15 am |
| Headline: | Winter Storm Warning issued May 21 at 1:15AM MDT until May 21 at 6:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Periods of heavy snow...mainly on north facing slopes above 6500 ft. Total snow accumulations 8 to 15 inches. North winds gusting as high as 30 mph. * WHERE...Absaroka/Beartooth Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Recreation in the high country will be impacted by heavy accumulating snow. * ADDITIONAL DETAILS...Several inches of snow are expected over Beartooth Pass, which may impact the opening of the highway at the end of the week. Be sure to monitor road conditions before traveling. |
| Alert: | Winter Weather Advisory |
| Area(s): | Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains |
| Effective: | 2026-05-21 @ 2:15 am -> 2026-05-21 @ 10:00 pm |
| Onset: | 2026-05-21 @ 4:00 am -> 2026-05-21 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-05-21 @ 2:15 am |
| Headline: | Winter Weather Advisory issued May 21 at 1:15AM MDT until May 21 at 9:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Snow expected. Total snow accumulations 5 to 10 inches. North winds gusting as high as 30 mph. * WHERE...In Montana, Pryor/Northern Bighorn Mountains. In Wyoming, Northeast Bighorn Mountains. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Expect wintry travel conditions on US-14 through Burgess Junction. Recreation in the high country will be impacted by heavy accumulating snow. |