523
WWUS85 KRIW 050240
RFWRIW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
840 PM MDT Fri Sep 4 2026

WYZ275-276-280>283-285>287-289-050345-
/O.EXP.KRIW.FW.W.0025.000000T0000Z-260905T0300Z/
North Bighorn Basin/Worland BLM-Cody Foothills-
Natrona County/Casper BLM-Johnson County/Casper BLM-
South Bighorn Basin/Worland BLM-
Upper Wind River Basin/Wind River Basin-South Bighorn Mountains-
Absaroka Mountains/North Shoshone NF-Owl Creek Mountains-
Granite/Green/Ferris/Rattlesnake Mountains-
840 PM MDT Fri Sep 4 2026

...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING...

Humidity levels have begun to increase with the loss of daytime
heating, while winds have begun to relax. Thus the Red Flag Warning
will be allowed to expire as scheduled.

$$

http://weather.gov/riverton