Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Hill County; Northern Blaine County |
| Effective: | 2025-11-16 @ 12:59 am |
| Onset: | 2025-11-16 @ 12:59 am -> 2025-11-16 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-11-16 @ 12:59 am |
| Headline: | Special Weather Statement issued November 15 at 11:59PM MST by NWS Great Falls MT |
| Description: |
Patchy dense fog will continue to develop over portions of Hill and Blaine counties tonight into Sunday morning. Variable visibility down to a quarter mile can be expected in addition to slippery spots on area roads due to frost deposition. Impacted routes include US highway 2. Those with travel plans tonight into Sunday morning should be prepared for highly variable road condition, including visibility reductions down to a quarter mile and slippery spots on area roadways, especially over bridges and overpasses. Slow down and allow extra time to reach your destination. |
| Alert: | Dense Fog Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Daniels; Western Roosevelt; Northern Phillips; Northern Valley |
| Effective: | 2025-11-15 @ 8:40 pm -> 2025-11-16 @ 12:00 pm |
| Onset: | 2025-11-15 @ 8:40 pm -> 2025-11-16 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2025-11-15 @ 8:40 pm |
| Headline: | Dense Fog Advisory issued November 15 at 7:40PM MST until November 16 at 11:00AM MST by NWS Glasgow MT |
| Description: |
* WHAT...Visibility one quarter mile or less in dense freezing fog. * WHERE...Central and Southeast Phillips, Central and Southern Valley, Daniels, Northern Phillips, Northern Valley, and Western Roosevelt Counties. * WHEN...Until 11 AM MST Sunday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of freezing fog will also create slippery outdoor surfaces. |