WWUS85 KCYS 090653

RFWCYS



URGENT - FIRE WEATHER MESSAGE

National Weather Service Cheyenne WY

1253 AM MDT Tue Jun 9 2026





WYZ417-418-092200-

/O.EXA.KCYS.FW.W.0025.260609T1800Z-260611T0300Z/

Niobrara/Lower Elevations of Converse/Thunder Basin National

Grassland-

Middle North Platte River Basin/Niobrara and Converse High Plains-

1253 AM MDT Tue Jun 9 2026



...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT

WEDNESDAY FOR LOW RELATIVE HUMIDITY AND GUSTY WINDS FOR FIRE 

WEATHER ZONES 417 AND 418...



The National Weather Service in Cheyenne has issued a Red Flag

Warning, which is in effect from noon today to 9 PM MDT

Wednesday. 



* WIND...West to southwest winds 20 to 40 MPH with gusts up to 55

  MPH. 



* HUMIDITY...10 to 15 percent. Overnight recoveries as low as 35 

  percent.



* IMPACTS...Any fires that develop will likely spread rapidly. 

  Outdoor burning is not recommended.



* ADDITIONAL DETAILS...Dry lightning will be possible on 

  Tuesday with isolated storms during the afternoon and evening 

  hours.



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.



&&



$$



NEZ434>437-WYZ430>433-092200-

/O.CON.KCYS.FW.W.0025.260609T1800Z-260611T0300Z/

Pine Ridge/Nebraska National Forest-

Box Butte/South Sioux/Niobrara River-

Lower North Platte River Basin/Scottsbluff National Monument-

Lodgepole Creek/Southern Nebraska Panhandle-

Laramie Foothills and High Plains-Laramie East High Plains-

Bordeaux/Chugwater/Wheatland-Goshen/Middle-

Lower North Platte River Basin-

1253 AM MDT Tue Jun 9 2026



...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT

WEDNESDAY FOR LOW RELATIVE HUMIDITY AND GUSTY WINDS FOR FIRE

WEATHER ZONES 430, 431, 432, 433, 434, 435, 436, AND 437...



* WIND...West to southwest winds 15 to 35 MPH with gusts up to 50

  MPH. 



* HUMIDITY...8 to 12 percent. Overnight recoveries as low as 35 

  percent.



* IMPACTS...Any fires that develop will likely spread rapidly. 

  Outdoor burning is not recommended.



* ADDITIONAL DETAILS...Dry lightning will be possible on 

  Tuesday with isolated storms during the afternoon and evening 

  hours.



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.



&&



$$