283
WWUS85 KCYS 130650
RFWCYS
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
1250 AM MDT WED MAY 13 2026
...MULTI DAY RED FLAG WARNING IN EFFECT THROUGH THURSDAY NIGHT FOR
GUSTY WINDS AND VERY LOW HUMIDITY...
NEZ434-435-140000-
/O.UPG.KCYS.FW.A.0013.260513T1800Z-260514T0100Z/
/O.NEW.KCYS.FW.W.0023.260513T1800Z-260515T0600Z/
PINE RIDGE/NEBRASKA NATIONAL FOREST-
BOX BUTTE/SOUTH SIOUX/NIOBRARA RIVER-
1250 AM MDT WED MAY 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT
THURSDAY NIGHT FOR LOW HUMIDITY, BREEZY CONDITIONS AND POOR
OVERNIGHT HUMIDITY RECOVERIES FOR FIRE WEATHER ZONES 434 AND
435...
* AFFECTED AREA...FIRE WEATHER ZONES 434 AND 435.
* WIND...FOR WEDNESDAY, SOUTH WINDS AT 15 TO 20 MPH WITH GUSTS TO
35 MPH. FOR THURSDAY, WESTERLY WINDS 20 TO 25 MPH WITH GUSTS UP
TO 40 MPH.
* HUMIDITY...FOR WEDNESDAY, 12 TO 16 PERCENT. FOR THURSDAY, 8 TO
12 PERCENT.
* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
OUTDOOR BURNING IS NOT RECOMMENDED.
* ADDITIONAL DETAILS...THERE IS A SLIGHT CHANCE FOR SCATTERED
SHOWERS AND STORMS DURING WEDNESDAY AFTERNOON AND EVENING. THE
MAIN CONCERN WITH THESE STORMS WILL BE GUSTY AND ERRATIC WINDS
AS WELL AS DRY LIGHTNING.
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.
NEZ436-437-140000-
/O.NEW.KCYS.FW.W.0023.260513T1800Z-260515T0600Z/
LOWER NORTH PLATTE RIVER BASIN/SCOTTSBLUFF NATIONAL MONUMENT-
LODGEPOLE CREEK/SOUTHERN NEBRASKA PANHANDLE-
1250 AM MDT WED MAY 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT
THURSDAY NIGHT FOR LOW HUMIDITY, BREEZY CONDITIONS AND POOR
OVERNIGHT HUMIDITY RECOVERIES FOR FIRE WEATHER ZONES 436 AND
437...
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A RED FLAG
WARNING, WHICH IS IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT
THURSDAY NIGHT.
* AFFECTED AREA...FIRE WEATHER ZONES 436 AND 437.
* WIND...FOR WEDNESDAY, SOUTH WINDS 20 TO 25 MPH WITH GUSTS UP TO
35 MPH. FOR THURSDAY, WESTERLY TO WEST-NORTHWESTERLY WINDS 20 TO
25 MPH WITH GUSTS UP TO 40 MPH.
* HUMIDITY...FOR WEDNESDAY, 15 TO 20 PERCENT. FOR THURSDAY, 8 TO
12 PERCENT.
* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
OUTDOOR BURNING IS NOT RECOMMENDED.
* ADDITIONAL DETAILS...THERE IS A SLIGHT CHANCE FOR SCATTERED
SHOWERS AND STORMS DURING WEDNESDAY AFTERNOON AND EVENING. THE
MAIN CONCERN WITH THESE STORMS WILL BE GUSTY AND ERRATIC WINDS
AS WELL AS DRY LIGHTNING.
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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