Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Red Flag Warning |
| Area(s): | North Bighorn Basin/Worland BLM; South Bighorn Basin/Worland BLM |
| Effective: | 2026-09-07 @ 1:52 am -> 2026-09-07 @ 8:00 pm |
| Onset: | 2026-09-07 @ 1:00 pm -> 2026-09-07 @ 8:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-09-07 @ 1:52 am |
| Headline: | Red Flag Warning issued September 7 at 12:52AM MDT until September 7 at 7:00PM MDT by NWS Riverton WY |
| Description: |
The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 7 PM MDT this evening. * IMPACTS: Low Humidities...Strong Gusty Winds...and Wind Shift with a Cold Front could cause erratic fire behavior. * AFFECTED AREA: In North Central WY...Fire Weather Zones 275 and 282. * COUNTIES AFFECTED: In North Central WY...Big Horn...Hot Springs...Park...Washakie. * COLD FRONT: A cold front will push into northern portions of the Bighorn Basin after 1400, reaching Greybull/Basin by 1800. The front will pass through the rest of the Bighorn Basin by 2100. * WIND: West 15 to 25 mph with gusts up to 30 mph. * HUMIDITY: As low as 13 percent. |
| Alert: | Red Flag Warning |
| Area(s): | Fall River County Area; Northern Campbell; Southern Campbell; Crook County Plains; Weston County Plains |
| Effective: | 2026-09-06 @ 10:40 pm -> 2026-09-07 @ 10:45 am |
| Onset: | 2026-09-07 @ 12:00 pm -> 2026-09-07 @ 8:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Rapid City SD on 2026-09-06 @ 10:40 pm |
| Headline: | Red Flag Warning issued September 6 at 9:40PM MDT until September 7 at 7:00PM MDT by NWS Rapid City SD |
| Description: |
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT MONDAY DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FALL RIVER COUNTY AREA, NORTHERN CAMPBELL, SOUTHERN CAMPBELL, CROOK COUNTY PLAINS, AND WESTON COUNTY PLAINS... The National Weather Service in Rapid City SD has issued a Red Flag Warning. * AFFECTED AREA...Fire Weather Zones 314, 315, 316, 317, and 322. * TIMING...From 11 AM to 7 PM MDT Monday. * WINDS...West to southwest winds 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Relative Humidity as low as 14 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
