WWUS85 KCYS 090821

RFWCYS



URGENT - FIRE WEATHER MESSAGE

National Weather Service Cheyenne WY

221 AM MDT Wed Sep 9 2026



WYZ419>422-425-427-100000-

/O.CON.KCYS.FW.W.0041.260909T1700Z-260911T0200Z/

North Laramie Range and Adjacent High Plains-

North Laramie Valley/Shirley Basin-

Ferris/Seminoe/Shirley Mountains-Central and West Carbon-

Upper North Platte River Basin-North Snowy Range Foothills-

221 AM MDT Wed Sep 9 2026



...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO

8 PM MDT THURSDAY FOR GUSTY WINDS AND LOW RH FOR FIRE WEATHER 

ZONES 419, 420, 421, 422, 425, AND 427...



* AFFECTED AREA...Fire weather zones 419, 420, 421, 422, 425, and

  427. 



* WIND...Westerly 15 to 30 MPH with occasional gusts up to 40 

  MPH. The strongest winds will occur Thursday afternoon. 



* HUMIDITY...10 to 15% Wednesday afternoon and as low as 5%

  Thursday afternoon. Poor overnight recoveries Wednesday night,

  as low as 20% to 30%.



* 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.



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