Cheyenne, WY Warnings, Watches and Advisories

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Cheyenne.

Use the Radar Maps link provided to understand the trajectory of a storm.

Red Flag Warning issued September 11 at 11:37AM MDT until September 11 at 7:00PM MDT by NWS Rapid City SD

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR SOUTHERN BLACK HILLS, FALL RIVER COUNTY AREA, CUSTER COUNTY PLAINS, PINE RIDGE AREA, BADLANDS AREA, BENNETT COUNTY AREA, AND WESTON COUNTY PLAINS... * AFFECTED AREA...Fire Weather Zones 317, 321, 322, 325, 326, 332, and 333. * TIMING...Until 7 PM MDT this evening. * WINDS...Gradually shifting from west to north at 15 to 25 MPH with gusts up to 35 MPH. * RELATIVE HUMIDITY...As low as 12 to 18 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.

Red Flag Warning issued September 11 at 12:13AM MDT until September 11 at 7:00PM MDT by NWS Cheyenne WY

The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from 11 AM this morning to 7 PM MDT this evening. * AFFECTED AREA...Fire weather zones 429 through 432. * WIND...West to northwest winds with gusts of 25 to 40 MPH. * HUMIDITY...13 to 16 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

Red Flag Warning issued September 11 at 12:13AM MDT until September 11 at 7:00PM MDT by NWS Cheyenne WY

* AFFECTED AREA...Fire weather zones 433 through 437. * WIND...West to northwest winds with gusts of 25 to 35 MPH. * HUMIDITY...12 to 15 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.