Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Special Weather Statement
Area(s): South Laramie Range Foothills; Central Laramie County
Effective: 2026-09-07 @ 7:46 pm -> 2026-09-07 @ 8:15 pm
Onset: 2026-09-07 @ 7:46 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-09-07 @ 7:46 pm
Headline: Special Weather Statement issued September 7 at 6:46PM MDT by NWS Cheyenne WY
Description: At 646 PM MDT, Doppler radar was tracking a strong thunderstorm near
Whitaker, or 15 miles northwest of Cheyenne, moving northeast at 40
mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.

Locations impacted include...
Whitaker.

Alert: Red Flag Warning
Area(s): North Bighorn Basin/Worland BLM; South Bighorn Basin/Worland BLM
Effective: 2026-09-07 @ 3:47 pm -> 2026-09-07 @ 8:00 pm
Onset: 2026-09-07 @ 3:47 pm -> 2026-09-07 @ 8:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-09-07 @ 3:47 pm
Headline: Red Flag Warning issued September 7 at 2:47PM MDT until September 7 at 7:00PM MDT by NWS Riverton WY
Description: * 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 around 1500, reaching Greybull and Basin by 1700.
This will bring a wind shift from southwesterly to northwesterly.
The front will pass through the rest of the Bighorn Basin by
2100.

* WIND: West 15 to 25 mph with gusts up to 35 mph.

* HUMIDITY: As low as 12 percent.

Alert: Red Flag Warning
Area(s): Fall River County Area; Northern Campbell; Southern Campbell; Crook County Plains; Weston County Plains
Effective: 2026-09-07 @ 10:33 am -> 2026-09-07 @ 8:00 pm
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 2026-09-07 @ 10:33 am
Headline: Red Flag Warning issued September 7 at 9:33AM MDT until September 7 at 7:00PM MDT by NWS Rapid City SD
Description: ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING DUE
TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FALL RIVER COUNTY AREA,
NORTHERN CAMPBELL, SOUTHERN CAMPBELL, CROOK COUNTY PLAINS, AND WESTON
COUNTY PLAINS...

* AFFECTED AREA...Fire Weather Zones 314, 315, 316, 317, and 322.

* TIMING...Until 7 PM MDT this evening.

* 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.

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