842
WWUS85 KRIW 080746
RFWRIW
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
146 AM MDT FRI AUG 8 2025
WYZ277>279-288-289-414-416-090200-
/O.CON.KRIW.FW.W.0009.000000T0000Z-250809T0200Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
146 AM MDT FRI AUG 8 2025
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS
EVENING...
* AFFECTED AREA:
IN CENTRAL WY FIRE ZONES...288...289.
IN SOUTHWEST WY FIRE ZONES...277...279.
IN WEST CENTRAL WY FIRE ZONES...278...414...416.
* COUNTIES AFFECTED:
IN CENTRAL WY...FREMONT...NATRONA.
IN SOUTHWEST WY...SWEETWATER...UINTA.
IN WEST CENTRAL WY...LINCOLN...SUBLETTE.
* IMPACTS: LOW HUMIDITIES AND STRONG GUSTY WINDS COULD CAUSE
ERRATIC FIRE BEHAVIOR.
* WIND: WEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH.
* HUMIDITY: AS LOW AS 12 PERCENT.
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.
WYZ280-283-090200-
/O.CON.KRIW.FW.W.0009.000000T0000Z-250809T0200Z/
NATRONA COUNTY/CASPER BLM-UPPER WIND RIVER BASIN/WIND RIVER BASIN-
146 AM MDT FRI AUG 8 2025
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS
EVENING...
* AFFECTED AREA:
IN CENTRAL WY...FIRE WEATHER ZONES 280 AND 283.
* COUNTIES AFFECTED:
IN CENTRAL WY...FREMONT...NATRONA.
* IMPACTS: LOW HUMIDITIES AND STRONG GUSTY WINDS COULD CAUSE
ERRATIC FIRE BEHAVIOR.
* WIND: NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.
* HUMIDITY: AS LOW AS 11 PERCENT.
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.
WYZ300-090200-
/O.CON.KRIW.FW.W.0009.000000T0000Z-250809T0200Z/
CASPER MOUNTAIN-
146 AM MDT FRI AUG 8 2025
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS
EVENING...
* AFFECTED AREA:
IN CENTRAL WY...FIRE WEATHER ZONE 300.
* COUNTIES AFFECTED:
IN CENTRAL WY...NATRONA.
* IMPACTS: LOW HUMIDITIES AND STRONG GUSTY WINDS COULD CAUSE
ERRATIC FIRE BEHAVIOR.
* WIND: WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.
* HUMIDITY: AS LOW AS 15 PERCENT.
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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