Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Flood Watch |
| Area(s): | Absaroka Mountains; Cody Foothills; Southwest Bighorn Basin; Owl Creek and Bridger Mountains; Wind River Mountains East |
| Effective: | 2026-07-23 @ 2:14 pm -> 2026-07-23 @ 9:00 pm |
| Onset: | 2026-07-23 @ 2:14 pm -> 2026-07-23 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-07-23 @ 2:14 pm |
| Headline: | Flood Watch issued July 23 at 1:14PM MDT until July 23 at 8:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...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 East Wind River Mountains. In northwest Wyoming, Absaroka Mountains and Cody Foothills. * WHEN...Until 8 PM MDT this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Slow moving showers and thunderstorms and abnormally high moisture in the air can bring locally heavy rainfall on already saturated grounds that could lead to flooding. - http://www.weather.gov/safety/flood |
| Alert: | Fire Weather Watch |
| Area(s): | Gallatin National Forest; Wheatland County/Sweet Grass County; Stillwater County; Beartooth Ranger District Custer National Forest; Golden Valley County/Musselshell County; Yellowstone County; Crow Indian Reservation/Big Horn Canyon Rec Area; Northern Rosebud/Northern Treasure Counties; Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest; Custer County; Sioux Ranger District Custer National Forest; Sheridan County/Casper BLM; Bighorn National Forest |
| Effective: | 2026-07-23 @ 2:13 pm -> 2026-07-24 @ 2:15 pm |
| Onset: | 2026-07-25 @ 1:00 pm -> 2026-07-26 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-23 @ 2:13 pm |
| Headline: | Fire Weather Watch issued July 23 at 1:13PM MDT until July 26 at 12:00AM MDT by NWS Billings MT |
| Description: |
The National Weather Service in Billings has issued a Fire Weather Watch...which is in effect from Saturday afternoon through Saturday evening. * IMPACTS: Low humidities, hot temperatures, and high-based thunderstorms with gusty and erratic outflow winds may create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY Fire Zones...274...284. In South Central MT Fire Zones...123...124...125...126...127 128...129. In Southeast MT Fire Zones...130...131...132. In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Central MT...Golden Valley...Musselshell...Wheatland. In North Central WY...Big Horn...Johnson...Sheridan...Washakie. In Northwest SD...Harding. In South Central MT...Big Horn...Carbon...Park...Stillwater Sweet Grass...Yellowstone. In Southeast MT...Carter...Custer...Fallon...Powder River Rosebud...Treasure. In Southwest MT...Gallatin. * WIND: Southwest 10 to 20 mph with gusts to 25 mph. * THUNDERSTORMS: Scattered afternoon and evening thunderstorms will produce gusty and erratic winds, and spotty rainfall. * HUMIDITY: Minimums of 12 to 19 percent. * TEMPERATURES: Highs of 99 to 107 below 5000 feet, hottest in the east. |
| Alert: | Extreme Heat Warning |
| Area(s): | Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Northern Stillwater; Powder River; Carter; Golden Valley; Northern Big Horn; Southern Rosebud; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northern Carbon; Northeastern Yellowstone; Southwestern Yellowstone; Sheridan Foothills |
| Effective: | 2026-07-23 @ 1:52 pm -> 2026-07-24 @ 2:00 pm |
| Onset: | 2026-07-24 @ 10:00 am -> 2026-07-26 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-23 @ 1:52 pm |
| Headline: | Extreme Heat Warning issued July 23 at 12:52PM MDT until July 26 at 9:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Dangerously hot conditions with high temperatures of 100 to 108, hottest in the east. Saturday is expected to be the hottest day. * WHERE...Portions of central, south central, and southeast Montana and north central Wyoming. * WHEN...From 9 AM Friday to 9 PM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Very warm nighttime temperatures will provide only limited relief. |
| 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 |