Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Dense Fog Advisory |
| Area(s): | Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Southern High Plains; Judith Basin County and Judith Gap; Fergus County below 4500ft |
| Effective: | 2026-10-31 @ 3:35 am -> 2026-10-31 @ 12:00 pm |
| Onset: | 2026-10-31 @ 3:35 am -> 2026-10-31 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-31 @ 3:35 am |
| Headline: | Dense Fog Advisory issued October 31 at 2:35AM MDT until October 31 at 11:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Variable visibility down to one quarter mile in dense freezing fog. * WHERE...Eastern Glacier, Western Toole, and Central Pondera, Fergus County below 4500ft, Judith Basin County and Judith Gap, Northern High Plains, and Southern High Plains. * WHEN...Until 11 AM MDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Some roadways or bridges could become icy and slippery. |