Alert archive / Wyoming / Red Flag Warnings in 2019
Red Flag Warning 9, NWS Riverton, WY
NWS Riverton, WY issued this red flag warning at Aug 31, 2019, 2:48 PM MDT for 12 counties in Wyoming. It took effect at Sep 1, 2019, 12:00 PM MDT. It was in force for 32 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 31, 2019, 2:48 PM MDT (20:48 UTC)
- In effect from
- Sep 1, 2019, 12:00 PM MDT
- Expired
- Sep 2, 2019, 8:00 PM MDT
- In force
- 32 hr
- Issued by
- NWS Riverton, WY
Counties Big Horn County, WY, Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Lincoln County, WY, Natrona County, WY, Park County, WY, Sublette County, WY, Sweetwater County, WY, Teton County, WY, Uinta County, WY, Washakie County, WY
The radar
The Riverton/Lander radar (KRIW), 35 km from the middle of the area, began a volume at 20:46 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 8.8 hours before the alert went out and 41 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1931 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
207 WWUS85 KRIW 312048 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 248 PM MDT Sat Aug 31 2019 WYZ277-279-288-289-300-414-416-010900- /O.UPG.KRIW.FW.A.0007.190901T1800Z-190902T0200Z/ /O.NEW.KRIW.FW.W.0009.190901T1800Z-190903T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 248 PM MDT Sat Aug 31 2019 ...RED FLAG WARNING IN EFFECT FROM NOON SUNDAY TO 8 PM MDT MONDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon Sunday to 8 PM MDT Monday. the Fire Weather Watch is no longer in effect. * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...288...289...300. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph. * HUMIDITY: As low as 7 percent. * TEMPERATURES: Around 90. 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. && $$ WYZ278-280-283-285-415-010900- /O.NEW.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Upper Green River Basin/Rock Springs BLM-Natrona County/Casper BLM- Upper Wind River Basin/Wind River Basin-South Bighorn Mountains- North Zone Bridger Teton NF and Grand Teton NP- 248 PM MDT Sat Aug 31 2019 ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Monday. * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...280...283...285. In Northwest WY Fire Zone....415. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In Southwest WY...Sweetwater...Teton. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 45 mph. * HUMIDITY: As low as 8 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
7 follow-up statements
478 WWUS85 KRIW 010845 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 245 AM MDT Sun Sep 1 2019 WYZ275-282-012200- /O.EXA.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ North Big Horn Basin/Worland BLM-South Big Horn Basin/Worland BLM- 245 AM MDT Sun Sep 1 2019 ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Monday. * IMPACTS: Low Humidities...Hot Temperatures...and Gusty Winds could result in fires spreading quickly and having erratic fire behavior. * AFFECTED AREA: In North Central WY...Fire Weather Zones 275 and 282. * COUNTIES AFFECTED: In North Central WY...Big Horn...Hot Springs...Park...Washakie. * WIND: West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: 10 to 14 percent. * TEMPERATURES: In the middle 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. && $$ WYZ277-279-288-289-300-414-416-012200- /O.CON.KRIW.FW.W.0009.190901T1800Z-190903T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 245 AM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT MONDAY... * IMPACTS: Low Humidities...Hot Temperatures...and Gusty Winds could result in fires spreading quickly and having erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...288...289...300. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph. * HUMIDITY: 9 to 14 percent. * TEMPERATURES: In the middle to upper 80s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ278-280-283-285-415-012200- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Upper Green River Basin/Rock Springs BLM-Natrona County/Casper BLM- Upper Wind River Basin/Wind River Basin-South Bighorn Mountains- North Zone Bridger Teton NF and Grand Teton NP- 245 AM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... * IMPACTS: Low Humidities...Hot Temperatures...and Gusty Winds could result in fires spreading quickly and having erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...283...285. In Northwest WY Fire Zone....415. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In Southwest WY...Sweetwater...Teton. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 40 mph. * HUMIDITY: 10 to 14 percent. * TEMPERATURES: In the lower to middle 90s east of the Divide. In the 80s in Sublette County and Jackson Valley. 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. && $$ http://weather.gov/riverton
549 WWUS85 KRIW 011516 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 916 AM MDT Sun Sep 1 2019 WYZ140-012200- /O.EXA.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Yellowstone National Park- 916 AM MDT Sun Sep 1 2019 ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Monday. * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Northwest WY...Fire Weather Zone 140. * COUNTIES AFFECTED: In Northwest WY...Yellowstone National Park. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 14 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ277-279-288-289-300-414-416-012200- /O.CON.KRIW.FW.W.0009.190901T1800Z-190903T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 916 AM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT MONDAY... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...288...289...300. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 30 mph. * HUMIDITY: As low as 8 percent. * TEMPERATURES: In the 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. && $$ WYZ278-280-283-285-415-012200- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Upper Green River Basin/Rock Springs BLM-Natrona County/Casper BLM- Upper Wind River Basin/Wind River Basin-South Bighorn Mountains- North Zone Bridger Teton NF and Grand Teton NP- 916 AM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...280...283...285. In Northwest WY Fire Zone....415. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In Southwest WY...Sweetwater...Teton. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 9 percent. * TEMPERATURES: In the lower 90s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ275-282-012200- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ North Big Horn Basin/Worland BLM-South Big Horn Basin/Worland BLM- 916 AM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY...Fire Weather Zones 275 and 282. * COUNTIES AFFECTED: In North Central WY...Big Horn...Hot Springs...Park...Washakie. * WIND: West 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 11 percent. * TEMPERATURES: In the mid 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. && $$ http://weather.gov/riverton
016 WWUS85 KRIW 011950 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 150 PM MDT Sun Sep 1 2019 WYZ277-279-288-289-300-414-416-021045- /O.CON.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 150 PM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT MONDAY... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...288...289...300. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 7 percent. * TEMPERATURES: In the upper 80s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ278-280-283-285-415-021045- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Upper Green River Basin/Rock Springs BLM-Natrona County/Casper BLM- Upper Wind River Basin/Wind River Basin-South Bighorn Mountains- North Zone Bridger Teton NF and Grand Teton NP- 150 PM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...280...283...285. In Northwest WY Fire Zone....415. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In Southwest WY...Sweetwater...Teton. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 8 percent. * TEMPERATURES: In the 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. && $$ WYZ275-282-021045- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ North Big Horn Basin/Worland BLM-South Big Horn Basin/Worland BLM- 150 PM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY...Fire Weather Zones 275 and 282. * COUNTIES AFFECTED: In North Central WY...Big Horn...Hot Springs...Park...Washakie. * WIND: Northwest 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 7 percent. * TEMPERATURES: In the mid 90s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ140-021045- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Yellowstone National Park- 150 PM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Northwest WY...Fire Weather Zone 140. * COUNTIES AFFECTED: In Northwest WY...Yellowstone National Park. * WIND: West 15 to 25 mph with gusts up to 40 mph. * HUMIDITY: As low as 14 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. && $$ http://weather.gov/riverton
242 WWUS85 KRIW 020231 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 831 PM MDT Sun Sep 1 2019 WYZ277-279-288-289-300-414-416-022200- /O.CON.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 831 PM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT MONDAY... * IMPACTS: Low humidities...hot temperatures...and gusty winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...288...289...300. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 10 to 20 mph with gusts around 30 mph. * HUMIDITY: As low as 7 percent. * TEMPERATURES: In the 80s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ278-280-283-285-415-022200- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Upper Green River Basin/Rock Springs BLM-Natrona County/Casper BLM- Upper Wind River Basin/Wind River Basin-South Bighorn Mountains- North Zone Bridger Teton NF and Grand Teton NP- 831 PM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... * IMPACTS: Low humidities...hot temperatures...and gusty winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...280...283...285. In Northwest WY Fire Zone....415. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In Southwest WY...Sweetwater...Teton. In West Central WY...Lincoln...Sublette. * WIND: West to northwest 15 to 25 mph with gusts around 30 mph. Gusts around 35 mph in the mountains. * HUMIDITY: As low as 8 percent. * TEMPERATURES: In the lower to mid 90s across the lower elevations, with mainly 80s in the mountains and Jackson Hole. 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. && $$ WYZ275-282-022200- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ North Big Horn Basin/Worland BLM-South Big Horn Basin/Worland BLM- 831 PM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... * IMPACTS: Low humidities...hot temperatures...and gusty winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY...Fire Weather Zones 275 and 282. * COUNTIES AFFECTED: In North Central WY...Big Horn...Hot Springs...Park...Washakie. * WIND: Northwest 10 to 20 mph with gusts around 25 mph. Gusts around 30 mph are possible across Big Horn County. * HUMIDITY: As low as 7 percent. * TEMPERATURES: In the mid 90s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ140-022200- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Yellowstone National Park- 831 PM MDT Sun Sep 1 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... * IMPACTS: Low humidities...hot temperatures...and gusty winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Northwest WY...Fire Weather Zone 140. * COUNTIES AFFECTED: In Northwest WY...Yellowstone National Park. * WIND: West 10 to 20 mph with gusts 25 to 30 mph. Mountain wind gusts will range from 30 to 40 mph. * HUMIDITY: As low as 14 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. && $$ http://weather.gov/riverton
619 WWUS85 KRIW 021310 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 710 AM MDT Mon Sep 2 2019 WYZ277-279-288-289-300-414-416-030115- /O.CON.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 710 AM MDT Mon Sep 2 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...288...289...300. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 7 percent. * TEMPERATURES: Around 90. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ278-280-283-285-415-030115- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Upper Green River Basin/Rock Springs BLM-Natrona County/Casper BLM- Upper Wind River Basin/Wind River Basin-South Bighorn Mountains- North Zone Bridger Teton NF and Grand Teton NP- 710 AM MDT Mon Sep 2 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...280...283...285. In Northwest WY Fire Zone....415. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In Southwest WY...Sweetwater...Teton. In West Central WY...Lincoln...Sublette. * WIND: West 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 8 percent. * TEMPERATURES: In the 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. && $$ WYZ275-282-030115- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ North Big Horn Basin/Worland BLM-South Big Horn Basin/Worland BLM- 710 AM MDT Mon Sep 2 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY...Fire Weather Zones 275 and 282. * COUNTIES AFFECTED: In North Central WY...Big Horn...Hot Springs...Park...Washakie. * WIND: Northwest 10 to 15 mph with gusts up to 25 mph. * HUMIDITY: As low as 10 percent. * TEMPERATURES: In the mid 90s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ140-030115- /O.CON.KRIW.FW.W.0009.190902T1800Z-190903T0200Z/ Yellowstone National Park- 710 AM MDT Mon Sep 2 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Northwest WY...Fire Weather Zone 140. * COUNTIES AFFECTED: In Northwest WY...Yellowstone National Park. * WIND: West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 14 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. && $$ http://weather.gov/riverton
769 WWUS85 KRIW 021948 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 148 PM MDT Mon Sep 2 2019 WYZ277-279-288-289-300-414-416-030200- /O.CON.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 148 PM MDT Mon Sep 2 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...288...289...300. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 5 percent. * TEMPERATURES: In the upper 80s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ278-280-283-285-415-030200- /O.CON.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ Upper Green River Basin/Rock Springs BLM-Natrona County/Casper BLM- Upper Wind River Basin/Wind River Basin-South Bighorn Mountains- North Zone Bridger Teton NF and Grand Teton NP- 148 PM MDT Mon Sep 2 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...280...283...285. In Northwest WY Fire Zone....415. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In Southwest WY...Sweetwater...Teton. In West Central WY...Lincoln...Sublette. * WIND: West 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 7 percent. * TEMPERATURES: In the 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. && $$ WYZ275-282-030200- /O.CON.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ North Big Horn Basin/Worland BLM-South Big Horn Basin/Worland BLM- 148 PM MDT Mon Sep 2 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY...Fire Weather Zones 275 and 282. * COUNTIES AFFECTED: In North Central WY...Big Horn...Hot Springs...Park...Washakie. * WIND: Northwest 10 to 15 mph with gusts up to 25 mph. * HUMIDITY: As low as 10 percent. * TEMPERATURES: In the mid 90s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ140-030200- /O.CON.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ Yellowstone National Park- 148 PM MDT Mon Sep 2 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Northwest WY...Fire Weather Zone 140. * COUNTIES AFFECTED: In Northwest WY...Yellowstone National Park. * WIND: West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 16 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. && $$ http://weather.gov/riverton
504 WWUS85 KRIW 030149 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 749 PM MDT Mon Sep 2 2019 WYZ277-279-288-289-300-414-416-030300- /O.EXP.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 749 PM MDT Mon Sep 2 2019 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Winds are decreasing and humidity is starting to rise. As a result, the Red Flag Warning will be allowed to expire. $$ WYZ278-280-283-285-415-030300- /O.EXP.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ Upper Green River Basin/Rock Springs BLM-Natrona County/Casper BLM- Upper Wind River Basin/Wind River Basin-South Bighorn Mountains- North Zone Bridger Teton NF and Grand Teton NP- 749 PM MDT Mon Sep 2 2019 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Winds are decreasing and humidity is starting to rise. As a result, the Red Flag Warning will be allowed to expire. $$ WYZ275-282-030300- /O.EXP.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ North Big Horn Basin/Worland BLM-South Big Horn Basin/Worland BLM- 749 PM MDT Mon Sep 2 2019 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Winds are decreasing and humidity is starting to rise. As a result, the Red Flag Warning will be allowed to expire. $$ WYZ140-030300- /O.EXP.KRIW.FW.W.0009.000000T0000Z-190903T0200Z/ Yellowstone National Park- 749 PM MDT Mon Sep 2 2019 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Winds are decreasing and humidity is starting to rise. As a result, the Red Flag Warning will be allowed to expire. $$ http://weather.gov/riverton
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Riverton, WY wrote its last area forecast discussion before this red flag warning went out at Aug 31, 11:21 AM MDT, 3 hours 27 minutes earlier.
Area forecast discussion, Aug 31, 11:21 AM MDT, 3 hours 27 minutes before
Area Forecast Discussion National Weather Service Riverton WY 1121 AM MDT Sat Aug 31 2019 .SHORT TERM...(Today through Sunday night) Issued at 410 AM MDT Sat Aug 31 2019 A few light showers or sprinkles lingered in the north zones overnight. Otherwise a mostly clear sky. Dry weather for Saturday with only a few afternoon clouds. Locally breezy in the southwest and south this afternoon into early evening. Elevated fire concerns there. High temperatures will be in the 80s to around 90 with 60s and 70s in the mountains. Clear sky tonight with light wind and seasonal low temps. Sunday will be dry and warmer with a few afternoon clouds once again. Breezy areas will occur in the central and southwest. A fire weather watch will be issued for most of the southwest zones and a few central zones for Sunday afternoon into early evening. Highs on Sunday will be in the 80s and 90s with 60s and 70s for the mountains. .LONG TERM...(Monday through Friday) Issued at 410 AM MDT Sat Aug 31 2019 High pressure will continue to dominate the region on Monday for a continued warm and dry pattern. High temperatures will be in the 80s to mid 90s across most of the state, the exception being highs in the 70s in the northwest. Relative humidity is still looking to bottom out in the low teens to single digits on Monday. West winds will be a bit more breezy on Monday. Models are in better agreement on the shortwave moving into Montana on Tuesday afternoon. The majority of this shortwave's energy will be to our north and east, so PoPs have been kept in and near the mountains. The shower activity with isolated thunderstorms will redevelop Wednesday, Thursday and Friday, mainly in the afternoon and evening hours. The best chances for precipitation are expected across west and south. && .AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon) Issued at 1115 AM MDT Sat Aug 31 2019 A quiet and dry Saturday starts this weekend off. No precipitation and little cloud cover is expected through the period and next couple of days. VFR conditions will prevail. Of note only is increased surface winds this afternoon with gusts to about 22kts for KPBI, KPNA, and KRKS. Winds will begin to increase after 18Z and dissipate around 01Z Sunday. Winds will be a bit stronger and more widespread Sunday afternoon. && .FIRE WEATHER... Issued AT 410 AM MDT Sat Aug 31 2019 Fire Weather Watch from Sunday afternoon through early Sunday evening for WYZ277-279-288-289-300-414-416. Dry today with warm temperatures. Elevated fire conditions in the southwest zones as an afternoon breeze will occur, diminishing by sunset. Sunday be dry and warmer. Breezy to locally windy areas in the southwest and central zones with very low humidity, thus the fire weather watch. Monday will be dry with continued very warm temperatures. Low humidity and breezy to windy conditions will occur in much of the region ahead of a weather system and approaching cold front. Elevated to near critical fire conditions will be widespread Monday. && .RIW WATCHES/WARNINGS/ADVISORIES... Fire Weather Watch from Sunday afternoon through Sunday evening for WYZ277-279-288-289-300-414-416. && SHORT TERM...AR LONG TERM...Swanson AVIATION...Bourque FIRE WEATHER...AR
Hazardous weather outlook, Aug 31, 2:04 PM MDT, 44 minutes before
Hazardous Weather Outlook National Weather Service Riverton WY 204 PM MDT Sat Aug 31 2019 WYZ001>020-022>030-012015- Yellowstone National Park-Absaroka Mountains-Cody Foothills- North Big Horn Basin-Southwest Big Horn Basin- Southeast Big Horn Basin-Owl Creek and Bridger Mountains- Bighorn Mountains West-Bighorn Mountains Southeast- Northeast Johnson County-Southeast Johnson County- Teton and Gros Ventre Mountains-Jackson Hole- Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Wind River Basin-Lander Foothills- Green Mountains and Rattlesnake Range- Natrona County Lower Elevations-Casper Mountain-Star Valley- Salt River and Wyoming Ranges-Upper Green River Basin Foothills- Upper Green River Basin-South Lincoln County- Rock Springs and Green River-Flaming Gorge-East Sweetwater County- 204 PM MDT Sat Aug 31 2019 This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...This Afternoon and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Sunday and Monday: Very warm to hot conditions and gusty winds will lead to critical fire weather conditions for most of Central and Southern Wyoming. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 2:27 AM MDT | Fire Weather Watch | RIW | Fremont, Lincoln, Natrona, Sublette, Sweetwater, Teton and 1 more | 12 hr |
Nearby
Red Flag Warnings in Wyoming, 2019Every red flag warning in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.