Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Dense Fog Advisory |
| Area(s): | Harding; Northern Perkins; Butte; Southern Perkins; Northern Campbell; Western Crook; Wyoming Black Hills; Northeastern Crook |
| Effective: | 2026-11-01 @ 5:19 am -> 2026-11-01 @ 1:00 pm |
| Onset: | 2026-11-01 @ 5:19 am -> 2026-11-01 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-11-01 @ 5:19 am |
| Headline: | Dense Fog Advisory issued November 1 at 4:19AM MST until November 1 at 12:00PM MST by NWS Rapid City SD |
| Description: |
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of northwestern South Dakota and northeast and the Black Hills of Wyoming. * WHEN...Until noon MST today. * IMPACTS...Low visibility could make driving conditions hazardous. |
| 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: | 2026-11-01 @ 5:09 am -> 2026-11-01 @ 1:00 pm |
| Onset: | 2026-11-01 @ 5:09 am -> 2026-11-01 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-11-01 @ 5:09 am |
| Headline: | Dense Fog Advisory issued November 1 at 4:09AM MST 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 today. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Some roadways or bridges could be frost or ice covered and slippery. |
| Alert: | Winter Weather Advisory |
| Area(s): | Wind River Mountains West |
| Effective: | 2026-11-01 @ 1:32 am -> 2026-11-01 @ 6:00 pm |
| 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 2026-11-01 @ 1:32 am |
| Headline: | Winter Weather Advisory issued November 1 at 1:32AM 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 this morning 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 4 inches, mainly for the highest elevations. |
| Alert: | High Wind Watch |
| Area(s): | Northeast Johnson County |
| Effective: | 2026-11-01 @ 1:30 am -> 2026-11-01 @ 6:00 pm |
| Onset: | 2026-11-02 @ 4:00 am -> 2026-11-02 @ 10:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-11-01 @ 1:30 am |
| Headline: | High Wind Watch issued November 1 at 1:30AM MDT until November 2 at 9:00AM MST by NWS Riverton WY |
| Description: |
* WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...Northeast Johnson County. * WHEN...From late tonight through Monday afternoon. * IMPACTS...Travel could be difficult, especially for high profile vehicles, including on Interstates 25 and 90. |
| Alert: | Winter Storm Watch |
| Area(s): | Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains |
| Effective: | 2026-11-01 @ 1:40 am -> 2026-11-02 @ 12:45 am |
| Onset: | 2026-11-01 @ 9:00 pm -> 2026-11-02 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-11-01 @ 1:40 am |
| Headline: | Winter Storm Watch issued November 1 at 12:40AM MDT until November 2 at 8:00PM MST by NWS Billings MT |
| Description: |
* WHAT...Moderate to heavy snow possible. Total snow accumulations up to 8 inches possible. Winds could gust 40 to 50 mph. * WHERE...In Montana, Pryor/Northern Bighorn Mountains. In Wyoming, Northeast Bighorn Mountains. * WHEN...From this evening through Monday evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Recreation in the high country could be impacted by accumulating snow and blowing snow. |
