Cheyenne, Wyoming
Regional Weather Alerts
| 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. |
| Alert: | Red Flag Warning |
| Area(s): | Southwest Carbon County; Sierra Madre Range/Medicine Bow NF; Snowy Range/Medicine Bow NF; Southern Laramie Valley; Southern Laramie Range; Bordeaux/Chugwater/Wheatland |
| Effective: | 2026-09-10 @ 1:18 am -> 2026-09-10 @ 9:00 pm |
| Onset: | 2026-09-10 @ 1:18 am -> 2026-09-10 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-09-10 @ 1:18 am |
| Headline: | Red Flag Warning issued September 10 at 12:18AM MDT until September 10 at 8:00PM MDT by NWS Cheyenne WY |
| Description: |
The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect until 8 PM MDT this evening. * AFFECTED AREA...Fire weather zones 423, 424, 426, 428, 429, and 432... * WIND...Westerly winds 15 to 30 MPH with gusts up to 40 MPH. * HUMIDITY...Between 5 to 13%. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| 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; Upper North Platte River Basin; North Snowy Range Foothills |
| Effective: | 2026-09-10 @ 1:18 am -> 2026-09-10 @ 9:00 pm |
| Onset: | 2026-09-10 @ 1:18 am -> 2026-09-10 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-09-10 @ 1:18 am |
| Headline: | Red Flag Warning issued September 10 at 12:18AM MDT until September 10 at 8:00PM MDT by NWS Cheyenne WY |
| Description: |
* AFFECTED AREA...Fire weather zones 419, 420, 421, 422, 425, and 427. * WIND...Westerly winds 15 to 30 MPH with gusts up to 40 MPH. * HUMIDITY...Between 5 to 10%. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
