824
WWUS85 KCYS 070735
RFWCYS
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
135 AM 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%.
WYZ417-418-071545-
/O.CON.KCYS.FW.W.0017.250807T1800Z-250808T0200Z/
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-
MIDDLE NORTH PLATTE RIVER BASIN/NIOBRARA AND CONVERSE HIGH PLAINS-
135 AM MDT THU AUG 7 2025
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 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>429-071545-
/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-
135 AM 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
ASLOW 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.
NEZ434>437-071545-
/O.NEW.KCYS.FW.A.0011.250807T1800Z-250808T0200Z/
PINE RIDGE/NEBRASKA NATIONAL FOREST-
BOX BUTTE/SOUTH SIOUX/NIOBRARA RIVER-
LOWER NORTH PLATTE RIVER BASIN/SCOTTSBLUFF NATIONAL MONUMENT-
LODGEPOLE CREEK/SOUTHERN NEBRASKA PANHANDLE-
135 AM MDT THU AUG 7 2025
...FIRE WEATHER WATCH IN EFFECT FROM NOON MDT TODAY THROUGH THIS
EVENING FOR LOW RH AND GUSTY WINDS FOR FIRE WEATHER ZONES 434,
435, 436, AND 437...
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A FIRE
WEATHER WATCH, WHICH IS IN EFFECT FROM NOON MDT TODAY THROUGH
THIS EVENING.
* AFFECTED AREA...FIRE WEATHER ZONE 434.FIRE WEATHER ZONE
435.FIRE WEATHER ZONE 436.FIRE WEATHER ZONE 437.
* WIND...WEST TO SOUTHWEST WINDS GUSTING 20 TO 30 MPH.
* HUMIDITY...MINIMUMS OF 8 TO 15 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.
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