Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Flood Advisory |
| Area(s): | Hot Springs, WY |
| Effective: | 2026-07-16 @ 3:57 pm -> 2026-07-16 @ 7:00 pm |
| Onset: | 2026-07-16 @ 3:57 pm -> 2026-07-16 @ 7:00 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-16 @ 3:57 pm |
| Headline: | Flood Advisory issued July 16 at 2:57PM MDT until July 16 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...Northwestern Hot Springs County in central Wyoming... This advisory is along the Grass Creek in far western Hot Springs County. * WHEN...Until 600 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. * ADDITIONAL DETAILS... - At 255 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. This is causing small stream flooding. Rapid river rises have already caused minor flooding in the advisory area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 1.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Mainly rural areas of Northwestern Hot Springs County. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Bighorn Mountains West; Bighorn Mountains Southeast; Wind River Mountains West; Wind River Mountains East; Salt River and Wyoming Ranges; Upper Green River Basin Foothills |
| Effective: | 2026-07-16 @ 3:56 pm -> 2026-07-17 @ 12:00 am |
| Onset: | 2026-07-16 @ 3:56 pm -> 2026-07-17 @ 12:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-07-16 @ 3:56 pm |
| Headline: | Flood Watch issued July 16 at 2:56PM MDT until July 16 at 11:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of central, north central, and west central Wyoming, including the following areas, in central Wyoming, Wind River Mountains East and Wind River Mountains West. In north central Wyoming, Bighorn Mountains Southeast and Bighorn Mountains West. In west central Wyoming, Salt River and Wyoming Ranges and Upper Green River Basin Foothills. * WHEN...Until 11 PM MDT this evening. * IMPACTS...Quick water rises on area streams and rivers, especially on small drainages in the mountains and foothills, leading to localized flash flooding, which could endanger people and infrastructure near waterways. * ADDITIONAL DETAILS... - Slow-moving showers and thunderstorms will have abundant moisture today, with dew points in the 50s and 60s, and precipitable water values in excess of 1 inch. An inch or more of rain is possible in under an hour, and some locations could quickly see 1 to 3 inches of rain over an hour or two, leading to flash flooding. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Absaroka Mountains; Cody Foothills; Southwest Bighorn Basin; Owl Creek and Bridger Mountains |
| Effective: | 2026-07-16 @ 3:56 pm -> 2026-07-17 @ 12:00 am |
| Onset: | 2026-07-16 @ 3:56 pm -> 2026-07-17 @ 12:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-07-16 @ 3:56 pm |
| Headline: | Flood Watch issued July 16 at 2:56PM MDT until July 16 at 11:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central and northwest Wyoming, including the following areas, in central Wyoming, Owl Creek and Bridger Mountains and Southwest Bighorn Basin. In northwest Wyoming, Absaroka Mountains and Cody Foothills. * WHEN...Until 11 PM MDT this evening. * IMPACTS...Quick water rises on area streams and rivers, especially on small drainages in the mountains and foothills, leading to localized flash flooding, which could endanger people and infrastructure near waterways. * ADDITIONAL DETAILS... - Slow-moving showers and thunderstorms will have abundant moisture today, with dew points in the 50s and 60s, and precipitable water values in excess of 1 inch. An inch or more of rain is possible in under an hour, and some locations could quickly see 1 to 3 inches of rain over an hour or two, leading to flash flooding. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Sheridan, WY |
| Effective: | 2026-07-16 @ 3:17 pm -> 2026-07-16 @ 6:15 pm |
| Onset: | 2026-07-16 @ 3:17 pm -> 2026-07-16 @ 6:15 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-16 @ 3:17 pm |
| Headline: | Flood Advisory issued July 16 at 2:17PM MDT until July 16 at 5:15PM MDT by NWS Billings MT |
| Description: |
* WHAT...Flooding caused by excessive rainfall from slow moving thunderstorms is expected. * WHERE...Northwestern Sheridan County in north central Wyoming... * WHEN...Until 515 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 212 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.5 and 1.5 inches of rain have fallen. - Some locations that will experience flooding include... Mainly rural areas of Northwestern Sheridan County. - This includes the northern Bighorn Mountains in Wyoming. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Washakie, WY |
| Effective: | 2026-07-16 @ 3:14 pm -> 2026-07-16 @ 6:15 pm |
| Onset: | 2026-07-16 @ 3:14 pm -> 2026-07-16 @ 6:15 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-16 @ 3:14 pm |
| Headline: | Flood Advisory issued July 16 at 2:14PM MDT until July 16 at 5:15PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...Southeastern Washakie County in central Wyoming... * WHEN...Until 515 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. * ADDITIONAL DETAILS... - At 214 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. This is causing small stream flooding. Rapid river rises have already caused minor flooding in the advisory area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 1.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Big Trails. - http://www.weather.gov/safety/flood |
| Alert: | Heat Advisory |
| Area(s): | Harding; Northern Perkins; Butte; Northern Meade Co Plains; Ziebach; Northern Foothills; Rapid City; Southern Foothills; Custer Co Plains; Pennington Co Plains; Haakon; Western Fall River; Northern Oglala Lakota; Northern Jackson; Bennett; Mellette; Todd; Tripp; Sturgis/Piedmont Foothills; Southern Meade Co Plains; Hermosa Foothills; Eastern Fall River; Southern Oglala Lakota; Southern Jackson; Southern Perkins; Northern Campbell; Southern Campbell; Western Crook; Weston County Plains; Newcastle; Northeastern Crook |
| Effective: | 2026-07-16 @ 12:25 pm -> 2026-07-16 @ 10:00 pm |
| Onset: | 2026-07-16 @ 12:25 pm -> 2026-07-16 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-07-16 @ 12:25 pm |
| Headline: | Heat Advisory issued July 16 at 11:25AM MDT until July 16 at 9:00PM MDT by NWS Rapid City SD |
| Description: |
* WHAT...Heat index values 95 to 103. * WHERE...Portions of northwestern, south central, and southwestern South Dakota and northeast Wyoming. * WHEN...Until 9 PM MDT /10 PM CDT/ this evening. * IMPACTS...Hot temperatures may cause heat illnesses. |