Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Flood Advisory |
| Area(s): | Hot Springs, WY |
| Effective: | 2026-07-18 @ 3:52 pm -> 2026-07-18 @ 6:45 pm |
| Onset: | 2026-07-18 @ 3:52 pm -> 2026-07-18 @ 6:45 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-18 @ 3:52 pm |
| Headline: | Flood Advisory issued July 18 at 2:52PM MDT until July 18 at 5:45PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...West Central Hot Springs County in central Wyoming... * WHEN...Until 545 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. * ADDITIONAL DETAILS... - At 251 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause small stream flooding. Between 1 and 1.5 inches of rain have fallen. - This includes the following streams and drainages... North Fork Owl Creek. 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 West Central Hot Springs County. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Hot Springs, WY; Park, WY |
| Effective: | 2026-07-18 @ 3:10 pm -> 2026-07-18 @ 6:15 pm |
| Onset: | 2026-07-18 @ 3:10 pm -> 2026-07-18 @ 6:15 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-18 @ 3:10 pm |
| Headline: | Flood Advisory issued July 18 at 2:10PM MDT until July 18 at 5:15PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...West Central Hot Springs County in central Wyoming... Extreme Southern Park County in central Wyoming... This includes the South Fork of Wood River, Gooseberry Creek, and the headwaters of Grass Creek. * 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 208 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.8 and 1 inch of rain has fallen. This is falling on already saturated grounds from previous days. - 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 West Central Hot Springs and Southern Park Counties. - 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: | 2026-07-18 @ 2:04 pm -> 2026-07-19 @ 7:00 am |
| Onset: | 2026-07-18 @ 2:04 pm -> 2026-07-19 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-07-18 @ 2:04 pm |
| Headline: | Heat Advisory issued July 18 at 1:04PM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD |
| Description: |
* WHAT...Heat index values up to 105. * WHERE...Portions of northwestern, south central, and southwestern South Dakota and northeast Wyoming. * WHEN...Until 9 PM MDT /10 PM CDT/ Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. |
| Alert: | Heat Advisory |
| Area(s): | Box Butte; Scotts Bluff; Banner; Morrill; South Sioux; Converse County Lower Elevations; Niobrara County; Goshen County |
| Effective: | 2026-07-18 @ 11:17 am -> 2026-07-19 @ 7:00 am |
| Onset: | 2026-07-19 @ 1:00 pm -> 2026-07-20 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-07-18 @ 11:17 am |
| Headline: | Heat Advisory issued July 18 at 10:17AM MDT until July 20 at 6:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Afternoon temperatures in the upper 90's to low 100's with overnight lows in the mid 60's to low 70's. * WHERE...In Nebraska, Banner County, Box Butte County, Morrill County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Converse County Lower Elevations, Niobrara County, and Goshen County. * WHEN...From noon Sunday to 6 PM MDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. |
| Alert: | Flood Watch |
| Area(s): | Absaroka Mountains; Cody Foothills |
| Effective: | 2026-07-18 @ 3:37 am -> 2026-07-18 @ 11:00 pm |
| Onset: | 2026-07-18 @ 1:00 pm -> 2026-07-18 @ 11:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-07-18 @ 3:37 am |
| Headline: | Flood Watch issued July 18 at 2:37AM MDT until July 18 at 10:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of northwest Wyoming, including the following areas, Absaroka Mountains and Cody Foothills. * WHEN...From noon MDT today through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Heavy rain from slow moving thunderstorms may bring local flooding this afternoon and evening. - http://www.weather.gov/safety/flood |