Alert archive / Wyoming / Red Flag Warnings in 2021
Red Flag Warning 10, NWS Riverton, WY
NWS Riverton, WY issued this red flag warning at Aug 7, 2021, 2:05 PM MDT for 7 counties in Wyoming. It took effect at Aug 8, 2021, 12:00 PM MDT. It was in force for 56 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 7, 2021, 2:05 PM MDT (20:05 UTC)
- In effect from
- Aug 8, 2021, 12:00 PM MDT
- Expired
- Aug 10, 2021, 8:00 PM MDT
- In force
- 56 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Lincoln County, WY, Natrona County, WY, Sublette County, WY, Sweetwater County, WY, Teton County, WY, Uinta County, WY
The radar
The Riverton/Lander radar (KRIW), 96 km from the middle of the area, began a volume at 20:06 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, 8.1 hours before the alert went out and 101 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
- 1987 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
695 WWUS85 KRIW 072005 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 205 PM MDT Sat Aug 7 2021 WYZ277>279-289-081200- /O.NEW.KRIW.FW.W.0010.210808T1800Z-210810T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 205 PM MDT Sat Aug 7 2021 ...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. * IMPACTS: Low Humidities...Strong Gusty Winds...and Wind Shift with a Cold Front will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zone....289. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * COLD FRONT: The cold front will move through zones 277/278 Monday afternoon, turning winds more west-northwest. The front will move through zones 279/289 late Monday afternoon into the evening. * WIND: West 15 to 25 mph with gusts up to 35 mph during the afternoon and early evening hours. * HUMIDITY: As low as 11 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
9 follow-up statements
629 WWUS85 KRIW 080811 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 211 AM MDT Sun Aug 8 2021 WYZ277>279-289-082200- /O.CON.KRIW.FW.W.0010.210808T1800Z-210810T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 211 AM MDT Sun Aug 8 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT MONDAY... * IMPACTS: Low Humidities and Gusty Winds will create erratic fire behavior and may lead to new fire starts. * AFFECTED AREA: In Central WY Fire Zone....289. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * COLD FRONT: The cold front will move through zones 277/278 Monday afternoon, turning winds more west-northwest. The front will move through zones 279/289 late Monday afternoon into the evening. * WIND: West 15 to 25 mph with gusts to 35 mph. * HUMIDITY: 10 to 15 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
500 WWUS85 KRIW 081945 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 145 PM MDT Sun Aug 8 2021 WYZ288-414-416-091200- /O.EXB.KRIW.FW.W.0010.210809T1800Z-210810T0200Z/ East Wind River Mountains/South Shoshone NF- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 145 PM MDT Sun Aug 8 2021 ...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 Zone....The southern half of 288. In West Central WY Fire Zones...The southern portions of 414...416. * COUNTIES AFFECTED: In Central WY...Fremont. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 16 percent in zone 416; 14 to 18 percent in zone 414; 12 to 16 percent in zone 288. 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. && $$ WYZ277>279-289-091200- /O.CON.KRIW.FW.W.0010.000000T0000Z-210810T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 145 PM MDT Sun Aug 8 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT MONDAY... * IMPACTS: Low Humidities...Strong Gusty Winds...and Wind Shift with a Cold Front will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zone....289. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * COLD FRONT: The cold front will move through zones 277/278 Monday afternoon, turning winds more west-northwest. The front will move through zones 279/289 late Monday afternoon into the evening. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: 11 to 15 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
509 WWUS85 KRIW 090322 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 922 PM MDT Sun Aug 8 2021 WYZ277>279-289-091300- /O.CON.KRIW.FW.W.0010.000000T0000Z-210810T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 922 PM MDT Sun Aug 8 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT MONDAY... Wind speeds decrease overnight into Monday morning, but relative humidity recovery will be poor tonight. * IMPACTS: Low relative humidity and strong gusty wind will create erratic fire behavior and cause wildfires to rapidly spread. * AFFECTED AREA: In Central WY Fire Zone....289. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * COLD FRONT: The cold front will move through zones 277 and 278 Monday afternoon, turning winds more west-northwest. The front will move through zones 279 and 289 late Monday afternoon into the evening. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: 11 to 15 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ288-414-416-091300- /O.CON.KRIW.FW.W.0010.210809T1800Z-210810T0200Z/ East Wind River Mountains/South Shoshone NF- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 922 PM MDT Sun Aug 8 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT MONDAY... The National Weather Service in Riverton has posted a Red Flag Warning, which is in effect from noon to 8 PM MDT Monday. * IMPACTS: Low relative humidity and strong gusty wind will create erratic fire behavior and cause wildfires to rapidly spread. * AFFECTED AREA: In Central WY Fire Zone...The south half of Zone 288. In West Central WY Fire Zones...The southern portions of both zone 414 and zone 416. * COUNTIES AFFECTED: In Central WY...Fremont. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 15 percent in zone 416; 14 to 18 percent in zone 414; 12 to 16 percent in zone 288. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
086 WWUS85 KRIW 090856 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 256 AM MDT Mon Aug 9 2021 WYZ277>279-289-092200- /O.CON.KRIW.FW.W.0010.000000T0000Z-210810T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 256 AM MDT Mon Aug 9 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities and Strong Gusty Winds could cause erratic fire behavior and quick growth of any new fire starts. * AFFECTED AREA: In Central WY Fire Zone....289. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * 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 35 mph. * HUMIDITY: 10 to 15 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ288-414-416-092200- /O.CON.KRIW.FW.W.0010.210809T1800Z-210810T0200Z/ East Wind River Mountains/South Shoshone NF- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 256 AM MDT Mon Aug 9 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities and Strong Gusty Winds could cause erratic fire behavior and quick growth of any new fire starts. * AFFECTED AREA: In Central WY Fire Zone....288. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: 12 to 20 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
871
WWUS85 KRIW 091917
RFWRIW
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
117 PM MDT Mon Aug 9 2021
WYZ280-281-285-300-101215-
/O.NEW.KRIW.FW.W.0011.210810T1800Z-210811T0200Z/
Natrona County/Casper BLM-Johnson County/Casper BLM-
South Bighorn Mountains-Casper Mountain-
117 PM MDT Mon Aug 9 2021
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT TUESDAY...
The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Tuesday.
* IMPACTS: Low Humidities and Strong Gusty Winds will create
erratic fire behavior and new fire starts.
* AFFECTED AREA:
In Central WY Fire Zones...280...285...300.
In North Central WY Fire Zone....281.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Hot Springs...Johnson...Washakie.
* WIND: West 15 to 20 mph with gusts up to 30 mph.
* HUMIDITY: 9 to 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.
&&
$$
WYZ277>279-289-101215-
/O.EXT.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Granite/Green/Ferris/Rattlesnake Mountains-
117 PM MDT Mon Aug 9 2021
...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM MDT TUESDAY...
* IMPACTS: Low Humidities and Strong Gusty Winds will create
erratic fire behavior and new fire starts.
* AFFECTED AREA:
In Central WY Fire Zone....289.
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: Monday: West 15 to 25 mph with gusts up to 40 mph.
Tuesday: West 15 to 25 mph with gusts up to 35 mph.
* HUMIDITY: Monday: 12 to 14 percent.
Tuesday: 7 to 10 percent.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of strong
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
WYZ288-414-416-101215-
/O.EXT.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/
East Wind River Mountains/South Shoshone NF-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
West Wind River Mountains/East Zone Bridger Teton NF-
117 PM MDT Mon Aug 9 2021
...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM MDT TUESDAY...
* IMPACTS: Low Humidities and Strong Gusty Winds will create
erratic fire behavior and new fire starts.
* AFFECTED AREA:
In Central WY Fire Zone....288.
In West Central WY Fire Zones...414...416.
* COUNTIES AFFECTED:
In Central WY...Fremont.
In West Central WY...Lincoln...Sublette.
* WIND: Monday: West 15 to 25 mph with gusts up to 35 mph.
Tuesday: West 15 to 25 mph with gusts up to 30 mph.
* HUMIDITY: Monday: 12 to 16 percent over southern portions of the
zones.
Tuesday: 8 to 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.
&&
$$
http://weather.gov/riverton135 WWUS85 KRIW 100155 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 755 PM MDT Mon Aug 9 2021 WYZ277>279-289-101300- /O.CON.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 755 PM MDT Mon Aug 9 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT TUESDAY... Wind speeds decrease late Monday evening, but relative humidity recovery will be poor again overnight. * IMPACTS: Low relative humidity and strong gusty wind will create erratic fire behavior and cause wildfires to rapidly spread. * AFFECTED AREA: In Central WY Fire Zone....289. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: 7 to 10 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ288-414-416-101300- /O.CON.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/ East Wind River Mountains/South Shoshone NF- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 755 PM MDT Mon Aug 9 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT TUESDAY... Wind speeds decrease late Monday evening, but relative humidity recovery will only be poor to fair overnight. * IMPACTS: Low relative humidity and strong gusty wind will create erratic fire behavior and cause wildfires to rapidly spread. * AFFECTED AREA: In Central WY Fire Zone....288. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 30 mph. * HUMIDITY: 8 to 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. && $$ WYZ280-281-285-300-101300- /O.CON.KRIW.FW.W.0011.210810T1800Z-210811T0200Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- South Bighorn Mountains-Casper Mountain- 755 PM MDT Mon Aug 9 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT TUESDAY... * IMPACTS: Low relative humidity and strong gusty wind will create erratic fire behavior and cause wildfires to rapidly spread. * AFFECTED AREA: In Central WY Fire Zones...280...285...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Washakie. * WIND: West 15 to 20 mph with gusts up to 30 mph. * HUMIDITY: 9 to 14 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
524 WWUS85 KRIW 100734 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 134 AM MDT Tue Aug 10 2021 WYZ276-110200- /O.EXA.KRIW.FW.W.0011.210810T1800Z-210811T0200Z/ Cody Foothills- 134 AM MDT Tue Aug 10 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 8 PM MDT this evening. * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY...Fire Weather Zone 276. * COUNTIES AFFECTED: In North Central WY...Park. * WIND: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: 10 to 15 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ277>279-289-110200- /O.CON.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 134 AM MDT Tue Aug 10 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zone....289. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: 7 to 10 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ288-414-416-110200- /O.CON.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/ East Wind River Mountains/South Shoshone NF- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 134 AM MDT Tue Aug 10 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zone....288. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 30 mph. * HUMIDITY: 8 to 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. && $$ WYZ280-281-285-300-110200- /O.CON.KRIW.FW.W.0011.210810T1800Z-210811T0200Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- South Bighorn Mountains-Casper Mountain- 134 AM MDT Tue Aug 10 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...280...285...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Washakie. * WIND: West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: 10 to 15 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
616 WWUS85 KRIW 101947 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 147 PM MDT Tue Aug 10 2021 WYZ277>279-289-110200- /O.CON.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 147 PM MDT Tue Aug 10 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zone....289. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * 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: 8 to 12 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ288-414-416-110200- /O.CON.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/ East Wind River Mountains/South Shoshone NF- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 147 PM MDT Tue Aug 10 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zone....288. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont, including the Dubois area. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 20 mph with gusts up to 35 mph. * HUMIDITY: 8 to 11 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-281-285-300-110200- /O.CON.KRIW.FW.W.0011.000000T0000Z-210811T0200Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- South Bighorn Mountains-Casper Mountain- 147 PM MDT Tue Aug 10 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...280...285...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Washakie. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: 10 to 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. && $$ WYZ276-110200- /O.CON.KRIW.FW.W.0011.000000T0000Z-210811T0200Z/ Cody Foothills- 147 PM MDT Tue Aug 10 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY...Fire Weather Zone 276. * COUNTIES AFFECTED: In North Central WY...Park. * WIND: West to Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: 12 to 14 percent. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
584 WWUS85 KRIW 110158 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 758 PM MDT Tue Aug 10 2021 WYZ277>279-289-110300- /O.EXP.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 758 PM MDT Tue Aug 10 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Gusty west wind will continue to decrease Tuesday evening. Therefore, the warning will be allowed to expire. Overnight relative humidity recovery will be poor. $$ WYZ288-414-416-110300- /O.EXP.KRIW.FW.W.0010.000000T0000Z-210811T0200Z/ East Wind River Mountains/South Shoshone NF- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 758 PM MDT Tue Aug 10 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Gusty west wind will continue to decrease Tuesday evening. Therefore, the warning will be allowed to expire. Overnight relative humidity recovery will be fair. $$ WYZ280-281-285-300-110300- /O.EXP.KRIW.FW.W.0011.000000T0000Z-210811T0200Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- South Bighorn Mountains-Casper Mountain- 758 PM MDT Tue Aug 10 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Wind speeds have decreased and will continue to trend downward this evening. Therefore, the warning will be allowed to expire. Overnight relative humidity recovery will be poor to fair. $$ WYZ276-110300- /O.EXP.KRIW.FW.W.0011.000000T0000Z-210811T0200Z/ Cody Foothills- 758 PM MDT Tue Aug 10 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Gusty west wind will continue to decrease Tuesday evening. Therefore, the warning will be allowed to expire. Overnight relative humidity recovery will be fair. $$ http://weather.gov/riverton
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:11 PM MDT | Special Weather Statement | RIW | Natrona | 34 min |
Nearby
Red Flag Warnings in Wyoming, 2021Every red flag warning in 2021
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.