Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Red Flag Warning |
| Area(s): | North Laramie Range and Adjacent High Plains; North Laramie Valley/Shirley Basin; Ferris/Seminoe/Shirley Mountains; Central and West Carbon; Southwest Carbon County; Sierra Madre Range/Medicine Bow NF; Upper North Platte River Basin; Snowy Range/Medicine Bow NF; North Snowy Range Foothills; Southern Laramie Valley; Southern Laramie Range; Bordeaux/Chugwater/Wheatland |
| Effective: | 2026-09-10 @ 1:12 pm -> 2026-09-10 @ 9:00 pm |
| Onset: | 2026-09-10 @ 1:12 pm -> 2026-09-10 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-09-10 @ 1:12 pm |
| Headline: | Red Flag Warning issued September 10 at 12:12PM MDT until September 10 at 8:00PM MDT by NWS Cheyenne WY |
| Description: |
* AFFECTED AREA...Fire weather zones 419 through 422, 425, and 427. * WIND...Westerly winds with gusts up to 40 MPH. * HUMIDITY...5 to 10 percent during the afternoon. Poor humidity recovery is expected Thursday night. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | Pine Ridge/Nebraska National Forest; Box Butte/South Sioux/Niobrara River; Lower North Platte River Basin/Scottsbluff National Monument; Lodgepole Creek/Southern Nebraska Panhandle; Goshen/Middle-Lower North Platte River Basin |
| Effective: | 2026-09-10 @ 1:12 pm -> 2026-09-11 @ 7:00 am |
| Onset: | 2026-09-11 @ 12:00 pm -> 2026-09-11 @ 8:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-09-10 @ 1:12 pm |
| Headline: | Red Flag Warning issued September 10 at 12:12PM MDT until September 11 at 7:00PM MDT by NWS Cheyenne WY |
| Description: |
The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from 11 AM to 7 PM MDT Friday. * 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. |
| Alert: | Red Flag Warning |
| Area(s): | Southern Black Hills; Fall River County Area; Custer County Plains; Pine Ridge Area; Badlands Area; Bennett County Area; Weston County Plains |
| Effective: | 2026-09-10 @ 12:12 pm -> 2026-09-11 @ 7:00 am |
| Onset: | 2026-09-11 @ 12:00 pm -> 2026-09-11 @ 8:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-09-10 @ 12:12 pm |
| Headline: | Red Flag Warning issued September 10 at 11:12AM MDT until September 11 at 7:00PM MDT by NWS Rapid City SD |
| Description: |
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY 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... The National Weather Service in Rapid City SD has issued a Red Flag Warning. * AFFECTED AREA...Fire Weather Zones 317, 321, 322, 325, 326, 332, and 333. * TIMING...From 11 AM to 7 PM MDT Friday. * 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. |
| Alert: | Red Flag Warning |
| Area(s): | Lincoln and Uinta Counties/Lower Elevations; Upper Green River Basin/Rock Springs BLM; Sweetwater County/Rock Springs BLM/Flaming Gorge NRA |
| Effective: | 2026-09-10 @ 3:14 am -> 2026-09-10 @ 10:00 pm |
| Onset: | 2026-09-10 @ 3:14 am -> 2026-09-10 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-09-10 @ 3:14 am |
| Headline: | Red Flag Warning issued September 10 at 2:14AM MDT until September 10 at 9:00PM MDT by NWS Riverton WY |
| Description: |
* AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * IMPACTS: Low Humidities and Strong Gusty Winds could cause erratic fire behavior. * WIND: West 10 to 20 mph with gusts up to 25 mph. * HUMIDITY: As low as 8 percent. |
| Alert: | Red Flag Warning |
| Area(s): | Natrona County/Casper BLM; Granite/Green/Ferris/Rattlesnake Mountains; Casper Mountain |
| Effective: | 2026-09-10 @ 3:14 am -> 2026-09-10 @ 10:00 pm |
| Onset: | 2026-09-10 @ 3:14 am -> 2026-09-10 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-09-10 @ 3:14 am |
| Headline: | Red Flag Warning issued September 10 at 2:14AM MDT until September 10 at 9:00PM MDT by NWS Riverton WY |
| Description: |
* AFFECTED AREA: In Central WY...Fire Weather Zones 280...289 and 300. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater. * IMPACTS: Low Humidities and Strong Gusty Winds could cause erratic fire behavior. * WIND: Southwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 7 percent. |
| Alert: | Red Flag Warning |
| Area(s): | Absaroka Mountains/North Shoshone NF; Owl Creek Mountains; East Wind River Mountains/South Shoshone NF |
| Effective: | 2026-09-10 @ 3:14 am -> 2026-09-10 @ 10:00 pm |
| Onset: | 2026-09-10 @ 1:00 pm -> 2026-09-10 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-09-10 @ 3:14 am |
| Headline: | Red Flag Warning issued September 10 at 2:14AM MDT until September 10 at 9:00PM MDT by NWS Riverton WY |
| Description: |
* AFFECTED AREA: In Central WY Fire Zone....288. In North Central WY Fire Zone....287. In Northwest WY Fire Zone....286. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park. In West Central WY...Sublette. * IMPACTS: Low Humidities and Strong Gusty Winds could cause erratic fire behavior. * WIND: West 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 12 to 15 percent, especially at elevations below 10,000 feet. |
