Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Treasure; Northern Big Horn; Northeastern Yellowstone; Southwestern Yellowstone |
| Effective: | 2026-10-29 @ 7:14 am -> 2026-10-29 @ 10:15 am |
| Onset: | 2026-10-29 @ 7:14 am |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-29 @ 7:14 am |
| Headline: | Special Weather Statement issued October 29 at 6:14AM MDT by NWS Billings MT |
| Description: |
Fog has formed along portions of the Yellowstone River from Billings to Hysham, and the Bighorn River from Hardin northward. Travelers on I-90 and I-94 in these areas should expect to encounter poor visibility, locally to a quarter mile or less. With temps below freezing some roads and sidewalks may be a little icy as well. Use caution and allow extra time for your morning commute. Expect fog to dissipate between 9 and 11 am this morning. |
| Alert: | Dense Fog Advisory |
| Area(s): | Musselshell; Golden Valley |
| Effective: | 2026-10-29 @ 6:46 am -> 2026-10-29 @ 11:00 am |
| Onset: | 2026-10-29 @ 6:46 am -> 2026-10-29 @ 11:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-29 @ 6:46 am |
| Headline: | Dense Fog Advisory issued October 29 at 5:46AM MDT until October 29 at 10:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Areas of very poor visibility due to dense fog. * WHERE...Golden Valley and Musselshell. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Expect visibility of a quarter mile or less in spots. Travel on US-12 from Lavina to Roundup and Musselshell will be impacted by fog. Some roads and sidewalks could be a bit icy. Please allow extra time for your morning commute. * ADDITIONAL DETAILS...Expect fog to dissipate between 9 and 11 am. |
| Alert: | Dense Fog Advisory |
| Area(s): | Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Southern High Plains; Eastern Pondera and Eastern Teton; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Gates of the Mountains |
| Effective: | 2026-10-29 @ 4:14 am -> 2026-10-29 @ 1:00 pm |
| Onset: | 2026-10-29 @ 4:14 am -> 2026-10-29 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-10-29 @ 4:14 am |
| Headline: | Dense Fog Advisory issued October 29 at 3:14AM MDT until October 29 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Visibility one quarter to one half mile in dense freezing fog. * WHERE...Gates of the Mountains, Cascade County below 5000ft, Eastern Glacier, Western Toole, and Central Pondera, Eastern Pondera and Eastern Teton, Eastern Toole and Liberty, Fergus County below 4500ft, Judith Basin County and Judith Gap, Northern High Plains, and Southern High Plains. * WHEN...Until noon MDT today. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Some roadways or bridges could be frost covered and slippery. |
