934
WWUS85 KCYS 071917
RFWCYS
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
117 PM MDT THU AUG 7 2025
...MULTI-DAY CRITICAL FIRE WEATHER CONDITIONS CONTINUE WITH
LITTLE OVERNIGHT RELIEF...
.A MULTI-DAY CRITICAL FIRE WEATHER EVENT IS ONGOING THIS WEEK DUE
TO LOW RH VALUES INTO THE TEENS AND SINGLE DIGITS, ALONGSIDE POOR
OVERNIGHT RECOVERIES AND GUSTY WINDS. THURSDAY WILL BRING SOME OF
THE WORST CONDITIONS OF THE WEEK WITH WIDESPREAD STRONG WEST TO
SOUTHWEST WINDS AND VERY LOW RH BETWEEN 8 AND 12%.
NEZ434-080200-
/O.UPG.KCYS.FW.A.0011.000000T0000Z-250808T0200Z/
/O.EXA.KCYS.FW.W.0017.000000T0000Z-250808T0200Z/
PINE RIDGE/NEBRASKA NATIONAL FOREST-
117 PM MDT THU AUG 7 2025
...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR LOW
RH AND GUSTY WINDS FOR FIRE WEATHER ZONE 434...
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A RED FLAG
WARNING, WHICH IS IN EFFECT UNTIL 8 PM MDT THIS EVENING. THE FIRE
WEATHER WATCH IS NO LONGER IN EFFECT.
* AFFECTED AREA...FIRE WEATHER ZONE 434.
* WIND...WEST TO SOUTHWEST WINDS GUSTING 20 TO 30 MPH.
* HUMIDITY...MINIMUMS OF 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.
WYZ417-418-080200-
/O.CON.KCYS.FW.W.0017.000000T0000Z-250808T0200Z/
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-
MIDDLE NORTH PLATTE RIVER BASIN/NIOBRARA AND CONVERSE HIGH PLAINS-
117 PM MDT THU AUG 7 2025
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR LOW RH AND GUSTY WINDS FOR FIRE WEATHER ZONES 417 AND 418...
* AFFECTED AREA...FIRE WEATHER ZONES 417 AND 418.
* WIND...WEST TO SOUTHWEST WINDS GUSTING 20 TO 30 MPH.
* HUMIDITY...8 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.
WYZ419>429-080200-
/O.CON.KCYS.FW.W.0017.000000T0000Z-250809T0000Z/
NORTH LARAMIE RANGE AND ADJACENT HIGH PLAINS-
NORTH LARAMIE VALLEY/SHIRLEY BASIN-
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-CENTRAL AND WEST CARBON-
SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE/MEDICINE BOW NF-
UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE/MEDICINE BOW NF-
NORTH SNOWY RANGE FOOTHILLS-SOUTHERN LARAMIE VALLEY-
SOUTHERN LARAMIE RANGE-
117 PM MDT THU AUG 7 2025
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM MDT FRIDAY FOR
LOW RH, POOR RECOVERY, AND GUSTY WINDS FOR FIRE WEATHER ZONES
419, 420, 421, 422, 423, 424, 425, 426, 427, 428, AND 429...
* AFFECTED AREA...FIRE WEATHER ZONES 419 THROUGH 429.
* WIND...WEST TO SOUTHWEST WINDS GUSTING 20 TO 30 MPH, ISOLATED
GUSTS 35 TO 40 MPH.
* HUMIDITY...MINIMUMS OF 8 TO 12 PERCENT; OVERNIGHT RECOVERIES
AS LOW AS 25 TO 40 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.
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