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Home Return to list Fire Weather Warning 0004 Issued by the Riverton Forecast Office
Action: Continued Issued At: 2026-03-18 02:55:41 938 WWUS85 KRIW 180755 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 155 AM MDT Wed Mar 18 2026 WYZ277>279-190000- /O.CON.KRIW.FW.W.0004.260318T1800Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 155 AM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 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 today and Saturday. * HUMIDITY: 10 to 15 percent. * TEMPERATURES: Highs around 70 Wednesday, in the 70s Thursday through Saturday. 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. && $$ WYZ276-282-283-287-190000- /O.CON.KRIW.FW.W.0004.260318T1800Z-260322T0300Z/ Cody Foothills-South Bighorn Basin/Worland BLM- Upper Wind River Basin/Wind River Basin-Owl Creek Mountains- 155 AM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zone....283. In North Central WY Fire Zones...276...282...287. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park...Washakie. * WIND: Southwest 20 to 30 mph with gusts up to 45 mph today and Saturday, southwest 15 to 25 mph with gusts to 30 mph Thursday and Friday. * HUMIDITY: 10 to 15 percent. * TEMPERATURES: Highs in 70s today, the upper 70s to lower 80s Thursday through Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-281-289-190000- /O.CON.KRIW.FW.W.0004.260318T1800Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 155 AM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 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 20 to 30 mph with gusts up to 45 mph today and Saturday; 15 to 25 mph with gusts to 35 mph Thursday and Friday. * HUMIDITY: 10 to 15 percent. * TEMPERATURES: Highs 70 to 75 today, 75 to 80 Thursday through Saturday. 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. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-18 02:55:41 938 WWUS85 KRIW 180755 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 155 AM MDT Wed Mar 18 2026 WYZ277>279-190000- /O.CON.KRIW.FW.W.0004.260318T1800Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 155 AM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph with the strongest wind today and Saturday. * HUMIDITY: 10 to 15 percent. * TEMPERATURES: Highs around 70 Wednesday, in the 70s Thursday through Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ276-282-283-287-190000- /O.CON.KRIW.FW.W.0004.260318T1800Z-260322T0300Z/ Cody Foothills-South Bighorn Basin/Worland BLM- Upper Wind River Basin/Wind River Basin-Owl Creek Mountains- 155 AM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 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: Southwest 20 to 30 mph with gusts up to 45 mph today and Saturday, southwest 15 to 25 mph with gusts to 30 mph Thursday and Friday. * HUMIDITY: 10 to 15 percent. * TEMPERATURES: Highs in 70s today, the upper 70s to lower 80s Thursday through Saturday. 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. && $$ WYZ280-281-289-190000- /O.CON.KRIW.FW.W.0004.260318T1800Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 155 AM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...289. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: West 20 to 30 mph with gusts up to 45 mph today and Saturday; 15 to 25 mph with gusts to 35 mph Thursday and Friday. * HUMIDITY: 10 to 15 percent. * TEMPERATURES: Highs 70 to 75 today, 75 to 80 Thursday through Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-18 02:55:41 938 WWUS85 KRIW 180755 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 155 AM MDT Wed Mar 18 2026 WYZ277>279-190000- /O.CON.KRIW.FW.W.0004.260318T1800Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 155 AM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 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 today and Saturday. * HUMIDITY: 10 to 15 percent. * TEMPERATURES: Highs around 70 Wednesday, in the 70s Thursday through Saturday. 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. && $$ WYZ276-282-283-287-190000- /O.CON.KRIW.FW.W.0004.260318T1800Z-260322T0300Z/ Cody Foothills-South Bighorn Basin/Worland BLM- Upper Wind River Basin/Wind River Basin-Owl Creek Mountains- 155 AM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zone....283. In North Central WY Fire Zones...276...282...287. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park...Washakie. * WIND: Southwest 20 to 30 mph with gusts up to 45 mph today and Saturday, southwest 15 to 25 mph with gusts to 30 mph Thursday and Friday. * HUMIDITY: 10 to 15 percent. * TEMPERATURES: Highs in 70s today, the upper 70s to lower 80s Thursday through Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-281-289-190000- /O.CON.KRIW.FW.W.0004.260318T1800Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 155 AM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 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 20 to 30 mph with gusts up to 45 mph today and Saturday; 15 to 25 mph with gusts to 35 mph Thursday and Friday. * HUMIDITY: 10 to 15 percent. * TEMPERATURES: Highs 70 to 75 today, 75 to 80 Thursday through Saturday. 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. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-18 15:05:54 227 WWUS85 KRIW 182005 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 205 PM MDT Wed Mar 18 2026 WYZ277>279-191300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 205 PM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph with the strongest winds today and likely Saturday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs around 70 Wednesday, in the 70s Thursday through Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ276-282-283-287-191300- /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- 205 PM MDT Wed Mar 18 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: Southwest 20 to 30 mph with gusts up to 45 mph today and Saturday, southwest 15 to 25 mph with gusts to 30 mph Thursday and Friday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in 70s today, the upper 70s to lower 80s Thursday through Saturday. 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. && $$ WYZ280-281-289-191300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 205 PM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...289. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: West 20 to 30 mph with gusts up to 45 mph today and Saturday; 15 to 25 mph with gusts to 35 mph Thursday and Friday. * HUMIDITY: As low as 12 percent. * TEMPERATURES: Highs 70 to 75 today, 75 to 80 Thursday through Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-18 15:05:54 227 WWUS85 KRIW 182005 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 205 PM MDT Wed Mar 18 2026 WYZ277>279-191300- /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- 205 PM MDT Wed Mar 18 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 winds today and likely Saturday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs around 70 Wednesday, in the 70s Thursday through Saturday. 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. && $$ WYZ276-282-283-287-191300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Cody Foothills-South Bighorn Basin/Worland BLM- Upper Wind River Basin/Wind River Basin-Owl Creek Mountains- 205 PM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zone....283. In North Central WY Fire Zones...276...282...287. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park...Washakie. * WIND: Southwest 20 to 30 mph with gusts up to 45 mph today and Saturday, southwest 15 to 25 mph with gusts to 30 mph Thursday and Friday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in 70s today, the upper 70s to lower 80s Thursday through Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-281-289-191300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 205 PM MDT Wed Mar 18 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 20 to 30 mph with gusts up to 45 mph today and Saturday; 15 to 25 mph with gusts to 35 mph Thursday and Friday. * HUMIDITY: As low as 12 percent. * TEMPERATURES: Highs 70 to 75 today, 75 to 80 Thursday through Saturday. 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. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-18 15:05:54 227 WWUS85 KRIW 182005 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 205 PM MDT Wed Mar 18 2026 WYZ277>279-191300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 205 PM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph with the strongest winds today and likely Saturday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs around 70 Wednesday, in the 70s Thursday through Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ276-282-283-287-191300- /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- 205 PM MDT Wed Mar 18 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: Southwest 20 to 30 mph with gusts up to 45 mph today and Saturday, southwest 15 to 25 mph with gusts to 30 mph Thursday and Friday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in 70s today, the upper 70s to lower 80s Thursday through Saturday. 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. && $$ WYZ280-281-289-191300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 205 PM MDT Wed Mar 18 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...289. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: West 20 to 30 mph with gusts up to 45 mph today and Saturday; 15 to 25 mph with gusts to 35 mph Thursday and Friday. * HUMIDITY: As low as 12 percent. * TEMPERATURES: Highs 70 to 75 today, 75 to 80 Thursday through Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-19 03:01:15 205 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. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-19 03:01:15 205 WWUS85 KRIW 190800 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 200 AM MDT Thu Mar 19 2026 WYZ277>279-200000- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 200 AM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph, with the strongest wind on Saturday. * HUMIDITY: 9 to 14 percent. * TEMPERATURES: Highs in the 70s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ 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 Action: Continued Issued At: 2026-03-19 03:01:15 205 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. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-19 13:55:53 603 WWUS85 KRIW 191855 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 1255 PM MDT Thu Mar 19 2026 WYZ277>279-201300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 1255 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph, especially on Saturday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in the lower 70s. Lows in the upper 30s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ276-282-283-287-201300- /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- 1255 PM 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 20 to 30 mph with gusts up to 55 mph, especially on Saturday. * HUMIDITY: As low as 7 percent. * TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. 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. && $$ WYZ280-281-289-201300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 1255 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...289. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: West 20 to 30 mph with gusts up to 45 mph, especially on Saturday. * HUMIDITY: As low as 8 percent. * TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-19 13:55:53 603 WWUS85 KRIW 191855 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 1255 PM MDT Thu Mar 19 2026 WYZ277>279-201300- /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- 1255 PM 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, especially on Saturday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in the lower 70s. Lows in the upper 30s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. 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. && $$ WYZ276-282-283-287-201300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Cody Foothills-South Bighorn Basin/Worland BLM- Upper Wind River Basin/Wind River Basin-Owl Creek Mountains- 1255 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zone....283. In North Central WY Fire Zones...276...282...287. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park...Washakie. * WIND: West 20 to 30 mph with gusts up to 55 mph, especially on Saturday. * HUMIDITY: As low as 7 percent. * TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-281-289-201300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 1255 PM 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 20 to 30 mph with gusts up to 45 mph, especially on Saturday. * HUMIDITY: As low as 8 percent. * TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. 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. && $$ http://weather.gov/riverton Action: Continued Issued At: 2026-03-19 13:55:53 603 WWUS85 KRIW 191855 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 1255 PM MDT Thu Mar 19 2026 WYZ277>279-201300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 1255 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph, especially on Saturday. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in the lower 70s. Lows in the upper 30s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ276-282-283-287-201300- /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- 1255 PM 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 20 to 30 mph with gusts up to 55 mph, especially on Saturday. * HUMIDITY: As low as 7 percent. * TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. 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. && $$ WYZ280-281-289-201300- /O.CON.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 1255 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...289. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: West 20 to 30 mph with gusts up to 45 mph, especially on Saturday. * HUMIDITY: As low as 8 percent. * TEMPERATURES: Highs in the upper 70s. Lows in the mid 40s. * ADDITIONAL DETAILS: Conditions are expected to improve during the overnight hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton Action: Cancelled Issued At: 2026-03-20 03:02:46 728 WWUS85 KRIW 200802 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 202 AM MDT Fri Mar 20 2026 WYZ277>279-210000- /O.CAN.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ /O.NEW.KRIW.FW.W.0005.260321T0000Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 202 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 6 PM this evening to 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 10 to 20 mph with gusts up to 25 to 30 mph Friday; 20 to 30 mph with gusts to 40 to 45 mph Saturday. * HUMIDITY: 8 to 13 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. && $$ WYZ276-282-283-287-210000- /O.CAN.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ /O.NEW.KRIW.FW.W.0005.260321T0000Z-260322T0300Z/ Cody Foothills-South Bighorn Basin/Worland BLM- Upper Wind River Basin/Wind River Basin-Owl Creek Mountains- 202 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 6 PM this evening to 9 PM MDT Saturday. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zone....283. In North Central WY Fire Zones...276...282...287. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park...Washakie. * WIND: West to southwest 10 to 20 mph with gusts to 25 to 30 mph Friday; west 20 to 30 mph with gusts to 45 mph Saturday. * HUMIDITY: 9 to 14 percent. * TEMPERATURES: Highs in the upper 70s to middle 80s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-281-289-210000- /O.CAN.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ /O.NEW.KRIW.FW.W.0005.260321T0000Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 202 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 6 PM this evening to 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: Southwest 15 to 25 mph with gusts up to 35 mph Friday; west to southwest 20 to 30 mph with gusts to 45 mph Saturday. * HUMIDITY: 9 to 14 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. && $$ http://weather.gov/riverton Action: Cancelled Issued At: 2026-03-20 03:02:46 728 WWUS85 KRIW 200802 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 202 AM MDT Fri Mar 20 2026 WYZ277>279-210000- /O.CAN.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ /O.NEW.KRIW.FW.W.0005.260321T0000Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 202 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 6 PM this evening to 9 PM MDT Saturday. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 10 to 20 mph with gusts up to 25 to 30 mph Friday; 20 to 30 mph with gusts to 40 to 45 mph Saturday. * HUMIDITY: 8 to 13 percent. * TEMPERATURES: Highs in the 70s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ276-282-283-287-210000- /O.CAN.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ /O.NEW.KRIW.FW.W.0005.260321T0000Z-260322T0300Z/ Cody Foothills-South Bighorn Basin/Worland BLM- Upper Wind River Basin/Wind River Basin-Owl Creek Mountains- 202 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 6 PM this evening to 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 to southwest 10 to 20 mph with gusts to 25 to 30 mph Friday; west 20 to 30 mph with gusts to 45 mph Saturday. * HUMIDITY: 9 to 14 percent. * TEMPERATURES: Highs in the upper 70s to middle 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. && $$ WYZ280-281-289-210000- /O.CAN.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ /O.NEW.KRIW.FW.W.0005.260321T0000Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 202 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 6 PM this evening to 9 PM MDT Saturday. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...289. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Johnson. In Southwest WY...Sweetwater. * WIND: Southwest 15 to 25 mph with gusts up to 35 mph Friday; west to southwest 20 to 30 mph with gusts to 45 mph Saturday. * HUMIDITY: 9 to 14 percent. * TEMPERATURES: Highs in the mid 70s to lower 80s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton Action: Cancelled Issued At: 2026-03-20 03:02:46 728 WWUS85 KRIW 200802 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 202 AM MDT Fri Mar 20 2026 WYZ277>279-210000- /O.CAN.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ /O.NEW.KRIW.FW.W.0005.260321T0000Z-260322T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- 202 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 6 PM this evening to 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 10 to 20 mph with gusts up to 25 to 30 mph Friday; 20 to 30 mph with gusts to 40 to 45 mph Saturday. * HUMIDITY: 8 to 13 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. && $$ WYZ276-282-283-287-210000- /O.CAN.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ /O.NEW.KRIW.FW.W.0005.260321T0000Z-260322T0300Z/ Cody Foothills-South Bighorn Basin/Worland BLM- Upper Wind River Basin/Wind River Basin-Owl Creek Mountains- 202 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 6 PM this evening to 9 PM MDT Saturday. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zone....283. In North Central WY Fire Zones...276...282...287. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park...Washakie. * WIND: West to southwest 10 to 20 mph with gusts to 25 to 30 mph Friday; west 20 to 30 mph with gusts to 45 mph Saturday. * HUMIDITY: 9 to 14 percent. * TEMPERATURES: Highs in the upper 70s to middle 80s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-281-289-210000- /O.CAN.KRIW.FW.W.0004.000000T0000Z-260322T0300Z/ /O.NEW.KRIW.FW.W.0005.260321T0000Z-260322T0300Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- Granite/Green/Ferris/Rattlesnake Mountains- 202 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 PM MDT SATURDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 6 PM this evening to 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: Southwest 15 to 25 mph with gusts up to 35 mph Friday; west to southwest 20 to 30 mph with gusts to 45 mph Saturday. * HUMIDITY: 9 to 14 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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||