Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Northern Rosebud; Custer; Fallon |
| Effective: | 2026-09-17 @ 8:40 am -> 2026-09-17 @ 11:00 am |
| Onset: | 2026-09-17 @ 8:40 am |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-09-17 @ 8:40 am |
| Headline: | Special Weather Statement issued September 17 at 7:40AM MDT by NWS Billings MT |
| Description: |
Localized dense fog has developed this morning from Miles City to Baker, with additional development along the Yellowstone River valley in Rosebud county. While not widespread, areas where fog has developed are reporting visibilities under half a mile at times. Drivers should be prepared for variable visibility while traveling, and slow down using extra caution when fog is encountered. This includes portions of I-94 and US-12. Fog is expected to dissipate by around 10 am this morning. |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-09-17 @ 2:42 am -> 2026-09-18 @ 1:00 am |
| Onset: | 2026-09-17 @ 1:00 pm -> 2026-09-18 @ 1:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-09-17 @ 2:42 am |
| Headline: | Lake Wind Advisory issued September 17 at 1:42AM MDT until September 18 at 12:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...East winds 10 to 20 mph with gusts up to 30 mph expected. * WHERE...Fort Peck Lake. * WHEN...From noon today to midnight tonight. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. * ADDITIONAL DETAILS...Wave heights up to 3 feet possible. |
