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Fire Weather Warning 0024
Issued by the Cheyenne Forecast Office

Action Issued Starts Expiration
New 2025-12-23 12:23:19 2025-12-23 12:22:00 2025-12-23 18:00:00
Expired 2025-12-23 17:52:27 2025-12-23 18:00:00


Action: New
Issued At: 2025-12-23 12:23:19

372 
WWUS85 KCYS 231822
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
1122 AM MST Tue Dec 23 2025

WYZ427-428-240000-
/O.NEW.KCYS.FW.W.0024.251223T1822Z-251224T0000Z/
North Snowy Range Foothills-Southern Laramie Valley-
1122 AM MST Tue Dec 23 2025

...RED FLAG WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON FOR
LOW RELATIVE HUMIDITY AND GUSTY WINDS...

The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect until 5 PM MST this afternoon. 

* AFFECTED AREA...Fire weather zone 427. Fire weather zone 428.

* WIND...Southwest wind gusts of 40 to 50 MPH.

* HUMIDITY...10 to 15 percent.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$


Action: Expired
Issued At: 2025-12-23 17:52:27

905 
WWUS85 KCYS 232351
RFWCYS

URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
451 PM MST Tue Dec 23 2025

WYZ427-428-240100-
/O.EXP.KCYS.FW.W.0024.000000T0000Z-251224T0000Z/
North Snowy Range Foothills-Southern Laramie Valley-
451 PM MST Tue Dec 23 2025

...RED FLAG WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON...

Winds have decreased across the area this evening with relative
humidities recovering above 20 percent shortly. Therefore, will
allow the Red Flag Warning to expire on time. 

$$



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