WWUS85 KCYS 180617

RFWCYS



URGENT - FIRE WEATHER MESSAGE

National Weather Service Cheyenne WY

1217 AM MDT Sat Apr 18 2026



NEZ434>437-WYZ430>433-190200-

/O.CON.KCYS.FW.W.0016.260418T1700Z-260419T0200Z/

/O.CON.KCYS.FW.A.0011.260419T1700Z-260421T0200Z/

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-

1217 AM MDT Sat Apr 18 2026



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

8 PM MDT THIS EVENING FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE

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

FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY

EVENING FOR VERY LOW HUMIDITY, GUSTY WINDS, AND POOR OVERNIGHT

RECOVERIES FOR FIRE WEATHER ZONES 430, 431, 432, 433, 434, 435,

436, AND 437...



* AFFECTED AREA...Fire weather zones 430 through 437.



* WIND...For the Red Flag Warning: West to northwest gusts

  between 25 to 35 mph. For the Fire Weather Watch: West to 

  northwest gusts to 20 mph Sunday, becoming light and variable 

  overnight, then west to northwest gusts between 25 to 30 mph 

  Monday.



* HUMIDITY...For the Red Flag Warning: 12 to 15 percent. For 

  the Fire Weather Watch: 7 to 12 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.



A Fire Weather Watch means that critical fire weather conditions

are forecast to occur. Listen for later forecasts and possible

Red Flag Warnings.



&&



$$



WYZ417-418-190200-

/O.CON.KCYS.FW.A.0011.260419T1700Z-260421T0200Z/

Niobrara/Lower Elevations of Converse/Thunder Basin National

Grassland-

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

1217 AM MDT Sat Apr 18 2026



...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING

THROUGH MONDAY EVENING FOR VERY LOW HUMIDITY, GUSTY WINDS, AND

POOR OVERNIGHT RECOVERIES FOR FIRE WEATHER ZONES 417 AND 418...



* AFFECTED AREA...Fire weather zones 417 and 418.



* WIND...West to northwest winds with gusts between 20 and 30 

  mph.



* HUMIDITY...9 to 13 percent.



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

  Outdoor burning is not recommended.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Fire Weather Watch means that critical fire weather conditions

are forecast to occur. Listen for later forecasts and possible

Red Flag Warnings.



&&



$$