473
WWUS85 KRIW 190800
RFWRIW
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
200 AM MDT THU MAR 19 2026
WYZ277>279-200000-
/O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
200 AM MDT THU MAR 19 2026
..RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY
* IMPACTS: LOW HUMIDITIES...UNSEASONABLY WARM TEMPERATURES...AND
STRONG GUSTY WINDS COULD CAUSE ERRATIC FIRE BEHAVIOR.
* AFFECTED AREA:
IN SOUTHWEST WY FIRE ZONES...277...279.
IN WEST CENTRAL WY FIRE ZONE....278.
* COUNTIES AFFECTED:
IN SOUTHWEST WY...SWEETWATER...UINTA.
IN WEST CENTRAL WY...LINCOLN...SUBLETTE.
* WIND: WEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH, WITH THE
STRONGEST WIND ON SATURDAY.
* HUMIDITY: 9 TO 14 PERCENT.
* TEMPERATURES: HIGHS IN THE 70S.
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.
WYZ276-282-283-287-200000-
/O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/
CODY FOOTHILLS-SOUTH BIGHORN BASIN/WORLAND BLM-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-OWL CREEK MOUNTAINS-
200 AM MDT THU MAR 19 2026
..RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY
* IMPACTS: LOW HUMIDITIES...UNSEASONABLY WARM TEMPERATURES...AND
STRONG GUSTY WINDS COULD CAUSE ERRATIC FIRE BEHAVIOR.
* AFFECTED AREA:
IN CENTRAL WY FIRE ZONE....283.
IN NORTH CENTRAL WY FIRE ZONES...276...282...287.
* COUNTIES AFFECTED:
IN CENTRAL WY...FREMONT.
IN NORTH CENTRAL WY...HOT SPRINGS...PARK...WASHAKIE.
* WIND: WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH TODAY, 15 TO 25
MPH WITH GUSTS TO 30 MPH FRIDAY AND 20 TO 30 MPH WITH GUSTS TO 45
MPH ON SATURDAY.
* HUMIDITY: 10 TO 15 PERCENT.
* TEMPERATURES: HIGHS IN THE UPPER 70S TO LOWER 80S.
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.
WYZ280-281-289-200000-
/O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/
NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
200 AM MDT THU MAR 19 2026
..RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY
* IMPACTS: LOW HUMIDITIES...UNSEASONABLY WARM TEMPERATURES...AND
STRONG GUSTY WINDS COULD CAUSE ERRATIC FIRE BEHAVIOR.
* AFFECTED AREA:
IN CENTRAL WY FIRE ZONES...280...289.
IN NORTH CENTRAL WY FIRE ZONE....281.
* COUNTIES AFFECTED:
IN CENTRAL WY...FREMONT...NATRONA.
IN NORTH CENTRAL WY...JOHNSON.
IN SOUTHWEST WY...SWEETWATER.
* WIND: WEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH TODAY, WEST 15 TO
25 MPH WITH GUSTS TO 30 MPH FRIDAY AND 20 TO 30 MPH WITH GUSTS TO
45 MPH SATURDAY.
* HUMIDITY: 10 TO 15 PERCENT.
* TEMPERATURES: HIGHS IN THE MID 70S TO LOWER 80S.
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.
HTTP://WEATHER.GOV/RIVERTON
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