Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Red Flag Warning
Area(s): Johnson County/Casper BLM
Effective: 2026-10-22 @ 12:31 pm -> 2026-10-23 @ 8:00 am
Onset: 2026-10-23 @ 1:00 pm -> 2026-10-23 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-10-22 @ 12:31 pm
Headline: Red Flag Warning issued October 22 at 11:31AM MDT until October 23 at 8:00PM MDT by NWS Riverton WY
Description: The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Friday.

* 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 Zone 281.

* COUNTIES AFFECTED:
In North Central WY...Johnson.

* COLD FRONT: Moves in after 8 PM MDT Friday, with northerly 20 to
35 mph winds and gusts of 35 to 40 mph.

* WIND: Southwest 25 to 35 mph with gusts up to 50 mph.

* HUMIDITY: As low as 20 percent.

Alert: Red Flag Warning
Area(s): Northern Campbell; Southern Campbell; Crook County Plains; Weston County Plains
Effective: 2026-10-22 @ 11:44 am -> 2026-10-23 @ 2:45 am
Onset: 2026-10-23 @ 12:00 pm -> 2026-10-24 @ 12:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-10-22 @ 11:44 am
Headline: Red Flag Warning issued October 22 at 10:44AM MDT until October 23 at 11:00PM MDT by NWS Rapid City SD
Description: ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 11 PM MDT FRIDAY DUE TO
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR NORTHERN CAMPBELL, SOUTHERN
CAMPBELL, CROOK COUNTY PLAINS, AND WESTON COUNTY PLAINS...

.Warm temperatures, humidities as low as 13%, and southwest winds
gusting to 50 mph ahead of an approaching cold front will create
widespread critical fire weather conditions Friday afternoon through
Friday evening. Southwest winds increase over northeastern Wyoming
after 10 am Friday morning with sustained winds of 25 to 35 mph and
gusts of 40 to 50 mph through the afternoon. Winds will shift to the
northwest after midnight as the front moves through. While some
showers may accompany the front, not expecting any widespread wetting
rains.

The National Weather Service in Rapid City SD has issued a Red Flag
Warning in effect from 11 AM to 11 PM MDT Friday.

* TIMING...From 11 AM to 11 PM MDT Friday.

* WINDS...Southwest winds 25 to 35 mph with gusts up to 50 mph.

* RELATIVE HUMIDITY...As low as 13 percent.

* IMPACTS...Any fires that develop will spread rapidly. Outdoor
burning is not recommended.

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