Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Flood Watch |
| Area(s): | Converse County Lower Elevations; Niobrara County; North Laramie Range; Ferris/Seminoe/Shirley Mountains; Shirley Basin; Central Laramie Range and Southwest Platte County; East Platte County; Goshen County; Central Carbon County; North Snowy Range Foothills; Southwest Carbon County; Upper North Platte River Basin; Laramie Valley; South Laramie Range; South Laramie Range Foothills; Central Laramie County; East Laramie County |
| Effective: | 2026-07-23 @ 12:58 am -> 2026-07-24 @ 1:00 am |
| Onset: | 2026-07-23 @ 12:58 am -> 2026-07-24 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-07-23 @ 12:58 am |
| Headline: | Flood Watch issued July 22 at 11:58PM MDT until July 24 at 12:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Flooding caused by localized excessive thunderstorm rainfall continues to be possible. * WHERE...Southeast Wyoming and the western Nebraska panhandle. * WHEN...Through Thursday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Localized torrential rainfall in scattered thunderstorm activity combined with the potential for training thunderstorms continues to have the potential to produce flooding. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Sierra Madre Range; Snowy Range |
| Effective: | 2026-07-23 @ 12:58 am -> 2026-07-24 @ 1:00 am |
| Onset: | 2026-07-23 @ 12:58 am -> 2026-07-24 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-07-23 @ 12:58 am |
| Headline: | Flood Watch issued July 22 at 11:58PM MDT until July 24 at 12:00AM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Flooding caused by localized excessive thunderstorm rainfall continues to be possible. * WHERE...Southeast Wyoming and the western Nebraska panhandle. * WHEN...Through Thursday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Localized torrential rainfall in scattered thunderstorm activity combined with the potential for training thunderstorms continues to have the potential to produce flooding. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Natrona, WY |
| Effective: | 2026-07-23 @ 12:30 am -> 2026-07-23 @ 3:30 am |
| Onset: | 2026-07-23 @ 12:30 am -> 2026-07-23 @ 3:30 am |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-23 @ 12:30 am |
| Headline: | Flood Advisory issued July 22 at 11:30PM MDT until July 23 at 2:30AM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...West Central Natrona County in central Wyoming near Hiland... * WHEN...Until 230 AM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos that drain toward Hiland. * ADDITIONAL DETAILS... - At 1129 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - This includes the following streams and drainages... South Fork Powder River, Poison Creek, Maverick Butte Draw and Sand Draw. Additional rainfall amounts up to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Hiland. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Fremont, WY; Natrona, WY |
| Effective: | 2026-07-23 @ 12:25 am -> 2026-07-23 @ 3:30 am |
| Onset: | 2026-07-23 @ 12:25 am -> 2026-07-23 @ 3:30 am |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-23 @ 12:25 am |
| Headline: | Flood Advisory issued July 22 at 11:25PM MDT until July 23 at 2:30AM MDT by NWS Riverton WY |
| Description: |
* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...Eastern Fremont County in central Wyoming... West Central Natrona County in central Wyoming... * WHEN...Until 230 AM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. * ADDITIONAL DETAILS... - At 1124 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause small stream flooding. Between 1 and 2 inches of rain have fallen. - This includes the following streams and drainages... Fish Draw, Middle Fork Sage Hen Creek, Sage Hen Creek, West Canyon Creek, Maverick Butte Draw, Dry Creek, West Sage Hen Creek, Canyon Creek, Fraser Draw, Sand Hills Draw, South Fork Powder River, East Canyon Creek, Cow Camp Creek, Muskrat Creek, Deer Creek, Poison Creek and Merriam Meadows Draw. Additional rainfall amounts up to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Mainly rural areas of Eastern Fremont and West Central Natrona Counties south of US-20/26. - http://www.weather.gov/safety/flood |
| Alert: | Extreme Heat Watch |
| Area(s): | Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Northern Stillwater; Powder River; Carter; Golden Valley; Red Lodge Foothills; Northern Big Horn; Southern Rosebud; Judith Gap; Beartooth Foothills; Southern Big Horn; Southeastern Carbon; Northern Sweet Grass; Bighorn Canyon; Northern Carbon; Melville Foothills; Northeastern Yellowstone; Southern Wheatland; Southwestern Yellowstone; Sheridan Foothills |
| Effective: | 2026-07-22 @ 11:51 pm -> 2026-07-24 @ 12:00 am |
| Onset: | 2026-07-24 @ 10:00 am -> 2026-07-26 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-22 @ 11:51 pm |
| Headline: | Extreme Heat Watch issued July 22 at 10:51PM MDT until July 26 at 9:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Dangerously hot conditions with temperatures 95 to 110 possible. * WHERE...Portions of central, south central, and southeast Montana and north central Wyoming. * WHEN...From Friday morning through Sunday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Flood Advisory |
| Area(s): | Fremont, WY |
| Effective: | 2026-07-22 @ 9:26 pm -> 2026-07-23 @ 3:30 am |
| Onset: | 2026-07-22 @ 9:26 pm -> 2026-07-23 @ 3:30 am |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 9:26 pm |
| Headline: | Flood Advisory issued July 22 at 8:26PM MDT until July 23 at 2:30AM MDT by NWS Riverton WY |
| Description: |
* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...Southwestern Fremont County in central Wyoming, especially along the Middle Fork of the Popo Agie River... * WHEN...Until 230 AM MDT Thursday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises along the Popo Agie River in Sinks Canyon should be monitored. * ADDITIONAL DETAILS... - At 821 PM MDT, Doppler radar indicated heavy rain due to thunderstorms this afternoon, with additional rain still occurring. This will cause small stream flooding. Rapid river rises will cause minor flooding in the advisory area. Between 3 and 4.5 inches of rain have fallen. - This includes the following streams and drainages... South Fork Squaw Creek, Squaw Creek, Middle Popo Agie River, Roaring Fork Creek, Sweetwater Gap Drain, Tayo Creek, Sheep Creek, Deep Creek, Shoshone Creek, Atlantic Creek and Sweetwater River. - Some locations that will experience flooding include... Frye Lake, Sinks Canyon State Park and Sinks Canyon Campground. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Red Lodge Foothills; Paradise Valley; Livingston Area; Beartooth Foothills; Absaroka/Beartooth Mountains; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northern Carbon; Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains; Sheridan Foothills |
| Effective: | 2026-07-22 @ 4:16 pm -> 2026-07-23 @ 3:00 am |
| Onset: | 2026-07-22 @ 4:16 pm -> 2026-07-23 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-22 @ 4:16 pm |
| Headline: | Flood Watch issued July 22 at 3:16PM MDT until July 23 at 2:00AM MDT by NWS Billings MT |
| Description: |
The combination of a moist and unstable air mass with slow moving thunderstorms capable of producing very heavy rain, will bring a risk of flash flooding late this afternoon and evening. * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of south central Montana, including the following areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn Canyon, Livingston Area, Northern Carbon, Paradise Valley, Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern Carbon and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...Until 2 AM MDT Thursday. * IMPACTS...Excessive runoff may result in flooding of rivers, streams, and other low-lying and flood-prone locations. Recent burn scars, including the Robertson Draw and East Side south of Red Lodge, and the Elk along the eastern slopes of the Bighorn Mountains, are at risk of experiencing flash flooding and debris flows. * ADDITIONAL DETAILS... - Thunderstorms capable of producing very heavy rain are expected late this afternoon and evening. These storms may cause localized flash flooding. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Yellowstone National Park; Absaroka Mountains; Cody Foothills; North Bighorn Basin; Southwest Bighorn Basin; Southeast Bighorn Basin; Owl Creek and Bridger Mountains; Bighorn Mountains West; Bighorn Mountains Southeast; Northeast Johnson County; Southeast Johnson County; Teton and Gros Ventre Mountains; Jackson Hole; Wind River Mountains West; Wind River Mountains East; Upper Wind River Basin; Wind River Basin; Lander Foothills; Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Casper Mountain; Star Valley; Salt River and Wyoming Ranges; Upper Green River Basin Foothills; Upper Green River Basin; South Lincoln County; Rock Springs and Green River; Flaming Gorge; East Sweetwater County |
| Effective: | 2026-07-22 @ 1:54 pm -> 2026-07-23 @ 7:00 am |
| Onset: | 2026-07-22 @ 1:54 pm -> 2026-07-23 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-07-22 @ 1:54 pm |
| Headline: | Flood Watch issued July 22 at 12:54PM MDT until July 23 at 6:00AM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, north central, northwest, south central, southwest, and west central Wyoming, including the following areas, in central Wyoming, Casper Mountain, Green Mountains and Rattlesnake Range, Lander Foothills, Natrona County Lower Elevations, Owl Creek and Bridger Mountains, Southwest Bighorn Basin, Upper Wind River Basin, Wind River Basin, Wind River Mountains East and Wind River Mountains West. In north central Wyoming, Bighorn Mountains Southeast, Bighorn Mountains West, Northeast Johnson County, Southeast Bighorn Basin and Southeast Johnson County. In northwest Wyoming, Absaroka Mountains, Cody Foothills, Jackson Hole, North Bighorn Basin, Teton and Gros Ventre Mountains and Yellowstone National Park. In south central Wyoming, East Sweetwater County, Flaming Gorge and Rock Springs and Green River. In southwest Wyoming, South Lincoln County. In west central Wyoming, Salt River and Wyoming Ranges, Star Valley, Upper Green River Basin and Upper Green River Basin Foothills. * WHEN...Until late Wednesday night. The most likely period of possible flooding is between 3pm Wednesday through 4am MDT Thursday. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Slow moving showers and thunderstorms and abnormally high moisture in the air can bring locally heavy rainfall that could lead to flooding. - http://www.weather.gov/safety/flood |