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WWUS85 KCYS 211642
RFWCYS
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
1042 AM MDT SAT MAR 21 2026
NEZ434>437-WYZ417>419-430>433-220200-
/O.CON.KCYS.FW.W.0009.000000T0000Z-260322T0200Z/
PINE RIDGE/NEBRASKA NATIONAL FOREST-
BOX BUTTE/SOUTH SIOUX/NIOBRARA RIVER-
LOWER NORTH PLATTE RIVER BASIN/SCOTTSBLUFF NATIONAL MONUMENT-
LODGEPOLE CREEK/SOUTHERN NEBRASKA PANHANDLE-
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL
GRASSLAND-
MIDDLE NORTH PLATTE RIVER BASIN/NIOBRARA AND CONVERSE HIGH PLAINS-
NORTH LARAMIE RANGE AND ADJACENT HIGH PLAINS-
LARAMIE FOOTHILLS AND HIGH PLAINS-LARAMIE EAST HIGH PLAINS-
BORDEAUX/CHUGWATER/WHEATLAND-GOSHEN/MIDDLE-
LOWER NORTH PLATTE RIVER BASIN-
1042 AM MDT SAT MAR 21 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR FIRE WEATHER ZONES 417, 418, 419, 430, 431, 432, 433, 434,
435, 436, AND 437...
* AFFECTED AREA...FIRE WEATHER ZONE 417, 418, 419, 430, 431,
432, 433, 434, 435, 436, AND 437.
* WIND...SUSTAINED WINDS 15 TO 25 MPH, GUSTING UP TO 35 MPH.
* HUMIDITY...5 TO 10 PERCENT.
* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
OUTDOOR BURNING IS NOT RECOMMENDED.
* ADDITIONAL DETAILS...POOR OVERNIGHT HUMIDITY RECOVERIES ARE
EXPECTED EARLY SATURDAY MORNING. WELL ABOVE AVERAGE
TEMPERATURES ARE ALSO EXPECTED WHICH WILL CONTRIBUTE
CONSIDERABLY TO THE DRY CONDITIONS.
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.
WYZ420>423-425-427>429-220200-
/O.CON.KCYS.FW.W.0009.000000T0000Z-260322T0200Z/
NORTH LARAMIE VALLEY/SHIRLEY BASIN-
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-CENTRAL AND WEST CARBON-
SOUTHWEST CARBON COUNTY-UPPER NORTH PLATTE RIVER BASIN-
NORTH SNOWY RANGE FOOTHILLS-SOUTHERN LARAMIE VALLEY-
SOUTHERN LARAMIE RANGE-
1042 AM MDT SAT MAR 21 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR FIRE WEATHER ZONES 420, 421, 422, 423, 425, 427, 428, AND
429...
* AFFECTED AREA...FIRE WEATHER ZONE 420, 421, 422, 423, 425,
427,428 AND 429.
* WIND...SUSTAINED WINDS 20 TO 30 MPH, GUSTING UP TO 40 MPH.
* HUMIDITY...8 TO 11 PERCENT.
* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
OUTDOOR BURNING IS NOT RECOMMENDED.
* ADDITIONAL DETAILS...POOR OVERNIGHT HUMIDITY RECOVERIES ARE
EXPECTED EARLY SATURDAY MORNING. WELL ABOVE AVERAGE
TEMPERATURES ARE ALSO EXPECTED WHICH WILL CONTRIBUTE
CONSIDERABLY TO THE DRY CONDITIONS.
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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