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Home Return to list Fire Weather Warning 0019 Issued by the Riverton Forecast Office
Action: New Issued At: 2026-08-06 02:52:19 460 WWUS85 KRIW 060751 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 151 AM MDT Thu Aug 6 2026 WYZ277>279-070300- /O.NEW.KRIW.FW.W.0019.260806T1800Z-260807T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 151 AM MDT Thu Aug 6 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot 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: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 6 percent. * TEMPERATURES: Highs in the upper 80s to lower 90s. 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. && $$ WYZ280-281-283-289-300-070300- /O.NEW.KRIW.FW.W.0019.260806T1800Z-260807T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Upper Wind River Basin/Wind River Basin- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- 151 AM MDT Thu Aug 6 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...283...289...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 6 percent. * TEMPERATURES: Highs in the 90s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ288-070300- /O.NEW.KRIW.FW.W.0019.260806T1800Z-260807T0300Z/ East Wind River Mountains/South Shoshone NF- 151 AM MDT Thu Aug 6 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY...Fire Weather Zone 288. * COUNTIES AFFECTED: In Central WY...Fremont. In West Central WY...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 8 percent. * TEMPERATURES: Highs around 80. 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. && $$ http://weather.gov/riverton Action: New Issued At: 2026-08-06 02:52:19 460 WWUS85 KRIW 060751 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 151 AM MDT Thu Aug 6 2026 WYZ277>279-070300- /O.NEW.KRIW.FW.W.0019.260806T1800Z-260807T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 151 AM MDT Thu Aug 6 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 6 percent. * TEMPERATURES: Highs in the upper 80s to lower 90s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-281-283-289-300-070300- /O.NEW.KRIW.FW.W.0019.260806T1800Z-260807T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Upper Wind River Basin/Wind River Basin- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- 151 AM MDT Thu Aug 6 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...283...289...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 6 percent. * TEMPERATURES: Highs in the 90s. 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. && $$ WYZ288-070300- /O.NEW.KRIW.FW.W.0019.260806T1800Z-260807T0300Z/ East Wind River Mountains/South Shoshone NF- 151 AM MDT Thu Aug 6 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY...Fire Weather Zone 288. * COUNTIES AFFECTED: In Central WY...Fremont. In West Central WY...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 8 percent. * TEMPERATURES: Highs around 80. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton Action: New Issued At: 2026-08-06 02:52:19 460 WWUS85 KRIW 060751 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 151 AM MDT Thu Aug 6 2026 WYZ277>279-070300- /O.NEW.KRIW.FW.W.0019.260806T1800Z-260807T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 151 AM MDT Thu Aug 6 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot 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: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 6 percent. * TEMPERATURES: Highs in the upper 80s to lower 90s. 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. && $$ WYZ280-281-283-289-300-070300- /O.NEW.KRIW.FW.W.0019.260806T1800Z-260807T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Upper Wind River Basin/Wind River Basin- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- 151 AM MDT Thu Aug 6 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...283...289...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 6 percent. * TEMPERATURES: Highs in the 90s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ288-070300- /O.NEW.KRIW.FW.W.0019.260806T1800Z-260807T0300Z/ East Wind River Mountains/South Shoshone NF- 151 AM MDT Thu Aug 6 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY...Fire Weather Zone 288. * COUNTIES AFFECTED: In Central WY...Fremont. In West Central WY...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 8 percent. * TEMPERATURES: Highs around 80. 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. && $$ http://weather.gov/riverton Action: Expired Issued At: 2026-08-06 21:45:48 626 WWUS85 KRIW 070245 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 845 PM MDT Thu Aug 6 2026 WYZ277>279-070345- /O.EXP.KRIW.FW.W.0019.000000T0000Z-260807T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 845 PM MDT Thu Aug 6 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind has decreased below Red Flag thresholds, thus the Warning will be allowed to expire at 9 PM MDT. Elevated fire weather conditions will persist overnight as humidity recovery will remain very poor. $$ WYZ280-281-283-289-300-070345- /O.EXP.KRIW.FW.W.0019.000000T0000Z-260807T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Upper Wind River Basin/Wind River Basin- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- 845 PM MDT Thu Aug 6 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind has decreased below Red Flag thresholds, thus the Warning will be allowed to expire at 9 PM MDT. Elevated fire weather conditions will persist overnight as humidity recovery will remain very poor. $$ WYZ288-070345- /O.EXP.KRIW.FW.W.0019.000000T0000Z-260807T0300Z/ East Wind River Mountains/South Shoshone NF- 845 PM MDT Thu Aug 6 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind has decreased below Red Flag thresholds, thus the Warning will be allowed to expire at 9 PM MDT. Elevated fire weather conditions will persist overnight as humidity recovery will remain very poor. $$ http://weather.gov/riverton Action: Expired Issued At: 2026-08-06 21:45:48 626 WWUS85 KRIW 070245 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 845 PM MDT Thu Aug 6 2026 WYZ277>279-070345- /O.EXP.KRIW.FW.W.0019.000000T0000Z-260807T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 845 PM MDT Thu Aug 6 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind has decreased below Red Flag thresholds, thus the Warning will be allowed to expire at 9 PM MDT. Elevated fire weather conditions will persist overnight as humidity recovery will remain very poor. $$ WYZ280-281-283-289-300-070345- /O.EXP.KRIW.FW.W.0019.000000T0000Z-260807T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Upper Wind River Basin/Wind River Basin- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- 845 PM MDT Thu Aug 6 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind has decreased below Red Flag thresholds, thus the Warning will be allowed to expire at 9 PM MDT. Elevated fire weather conditions will persist overnight as humidity recovery will remain very poor. $$ WYZ288-070345- /O.EXP.KRIW.FW.W.0019.000000T0000Z-260807T0300Z/ East Wind River Mountains/South Shoshone NF- 845 PM MDT Thu Aug 6 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind has decreased below Red Flag thresholds, thus the Warning will be allowed to expire at 9 PM MDT. Elevated fire weather conditions will persist overnight as humidity recovery will remain very poor. $$ http://weather.gov/riverton Action: Expired Issued At: 2026-08-06 21:45:48 626 WWUS85 KRIW 070245 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 845 PM MDT Thu Aug 6 2026 WYZ277>279-070345- /O.EXP.KRIW.FW.W.0019.000000T0000Z-260807T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 845 PM MDT Thu Aug 6 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind has decreased below Red Flag thresholds, thus the Warning will be allowed to expire at 9 PM MDT. Elevated fire weather conditions will persist overnight as humidity recovery will remain very poor. $$ WYZ280-281-283-289-300-070345- /O.EXP.KRIW.FW.W.0019.000000T0000Z-260807T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Upper Wind River Basin/Wind River Basin- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- 845 PM MDT Thu Aug 6 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind has decreased below Red Flag thresholds, thus the Warning will be allowed to expire at 9 PM MDT. Elevated fire weather conditions will persist overnight as humidity recovery will remain very poor. $$ WYZ288-070345- /O.EXP.KRIW.FW.W.0019.000000T0000Z-260807T0300Z/ East Wind River Mountains/South Shoshone NF- 845 PM MDT Thu Aug 6 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... Wind has decreased below Red Flag thresholds, thus the Warning will be allowed to expire at 9 PM MDT. Elevated fire weather conditions will persist overnight as humidity recovery will remain very poor. $$ http://weather.gov/riverton | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||