Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Converse County Lower Elevations; North Laramie Range; Ferris/Seminoe/Shirley Mountains; Shirley Basin; Central Laramie Range and Southwest Platte County; Central Carbon County; North Snowy Range Foothills; Southwest Carbon County; Sierra Madre Range; Upper North Platte River Basin; Snowy Range; Laramie Valley; South Laramie Range; South Laramie Range Foothills |
| Effective: | 2026-08-29 @ 5:56 pm -> 2026-08-29 @ 11:00 pm |
| Onset: | 2026-08-29 @ 5:56 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-08-29 @ 5:56 pm |
| Headline: | Special Weather Statement issued August 29 at 4:56PM MDT by NWS Cheyenne WY |
| Description: |
Scattered virga showers and thunderstorms in the area are producing strong, downburst winds along and west Interstate 25. Gusty shower and thunderstorm activity will be possible through 10PM this evening. Strong winds could be hazardous to travelers in light weight and high profile vehicles. Be prepared for sudden changes in wind speed and direction in the vicinity of these showers. Little to no rainfall is expected. |
| Alert: | Flood Watch |
| Area(s): | Yellowstone National Park; Absaroka Mountains; Teton and Gros Ventre Mountains; Jackson Hole; Wind River Mountains West; Star Valley; Salt River and Wyoming Ranges |
| Effective: | 2026-08-29 @ 2:07 pm -> 2026-08-30 @ 9:00 am |
| Onset: | 2026-08-29 @ 2:07 pm -> 2026-08-30 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-08-29 @ 2:07 pm |
| Headline: | Flood Watch issued August 29 at 1:07PM MDT until August 30 at 12:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, northwest, and west central Wyoming, including the following areas, in central Wyoming, Wind River Mountains West. In northwest Wyoming, Absaroka Mountains, Jackson Hole, Teton and Gros Ventre Mountains and Yellowstone National Park. In west central Wyoming, Salt River and Wyoming Ranges and Star Valley. * WHEN...Through Sunday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Increased moisture from the Pacific will move across northwest Wyoming through the weekend, bringing an extended chance for showers and thunderstorms. The increased moisture will have the potential to produce locally heavy rainfall, providing excessive runoff in flood-prone and low-lying areas. - http://www.weather.gov/safety/flood |