Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Dense Fog Advisory |
| Area(s): | Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Powder River; Carter; Northern Big Horn; Southern Rosebud; Southern Big Horn; Northeastern Yellowstone; Southwestern Yellowstone; Sheridan Foothills |
| Effective: | 2026-10-31 @ 10:12 pm -> 2026-11-01 @ 5:15 am |
| Onset: | 2026-10-31 @ 10:12 pm -> 2026-11-01 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-10-31 @ 10:12 pm |
| Headline: | Dense Fog Advisory issued October 31 at 9:12PM MDT until November 1 at 12:00PM MST by NWS Billings MT |
| Description: |
* WHAT...Pockets of dense fog with visibility down to one quarter mile or less at times. * WHERE...Portions of central, south central, and southeast Montana and north central Wyoming. * WHEN...Until noon MST Sunday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Some roadways or bridges could be frost or ice covered and slippery. |
| Alert: | Dense Fog Advisory |
| Area(s): | Harding; Northern Perkins; Butte; Southern Perkins; Northern Campbell; Western Crook; Wyoming Black Hills; Northeastern Crook |
| Effective: | 2026-10-31 @ 10:05 pm -> 2026-11-01 @ 12:15 pm |
| Onset: | 2026-10-31 @ 10:05 pm -> 2026-11-01 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-10-31 @ 10:05 pm |
| Headline: | Dense Fog Advisory issued October 31 at 9:05PM MDT until November 1 at 12:00PM MST by NWS Rapid City SD |
| Description: |
* WHAT...Visibility one quarter mile or less in dense fog will develop. * WHERE...Portions of northwestern South Dakota and northeast and the Black Hills of Wyoming. * WHEN...Until noon MST Sunday. * IMPACTS...Low visibility could make driving conditions hazardous. |
| Alert: | Winter Weather Advisory |
| Area(s): | Wind River Mountains West |
| Effective: | 2026-10-31 @ 1:36 pm -> 2026-11-01 @ 8:00 am |
| Onset: | 2026-11-01 @ 9:00 am -> 2026-11-02 @ 6:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-10-31 @ 1:36 pm |
| Headline: | Winter Weather Advisory issued October 31 at 12:36PM MDT until November 2 at 5:00AM MST by NWS Riverton WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations 6 to 9 inches above 9000 feet. * WHERE...Wind River Mountains West. * WHEN...From 8 AM Sunday to 5 AM MST Monday. * IMPACTS...Mountain travel could be difficult. * ADDITIONAL DETAILS...Heaviest period of snow occurs between 11 AM and 11 PM MST Sunday. South Pass snow totals up to 2 inches, mainly for the highest elevations. |
