Cheyenne, Wyoming

Regional Weather Alerts


     

Alert: Special Weather Statement
Area(s): East Platte County; Goshen County
Effective: 2026-09-06 @ 11:10 pm -> 2026-09-06 @ 11:45 pm
Onset: 2026-09-06 @ 11:10 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-09-06 @ 11:10 pm
Headline: Special Weather Statement issued September 6 at 10:10PM MDT by NWS Cheyenne WY
Description: At 1010 PM MDT, Doppler radar was tracking a cluster of strong
thunderstorms near Slater, or 15 miles southeast of Wheatland, moving
northeast at 35 mph.

HAZARD...Wind gusts up to 40 mph and nickel 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...
Slater and Veteran.

Alert: Special Weather Statement
Area(s): Wyoming Black Hills; Weston County Plains; Newcastle
Effective: 2026-09-06 @ 10:59 pm -> 2026-09-06 @ 11:30 pm
Onset: 2026-09-06 @ 10:59 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-09-06 @ 10:59 pm
Headline: Special Weather Statement issued September 6 at 9:59PM MDT by NWS Rapid City SD
Description: At 959 PM MDT, Doppler radar was tracking a strong thunderstorm 12
miles south of Osage, or 10 miles west of Newcastle, moving northeast
at 25 mph.

HAZARD...Wind gusts of 50 to 55 mph and pea size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Newcastle and Osage.

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.

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