Alert archive / Wyoming / Red Flag Warnings in 2021
Red Flag Warning 22, NWS Riverton, WY
NWS Riverton, WY issued this red flag warning at Sep 16, 2021, 1:59 PM MDT for 12 counties in Wyoming. It took effect at Sep 17, 2021, 12:00 PM MDT. It was in force for 32 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 16, 2021, 1:59 PM MDT (19:59 UTC)
- In effect from
- Sep 17, 2021, 12:00 PM MDT
- Expired
- Sep 18, 2021, 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 19:58 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 18, 4:10 PM MDT | NON-TSTM WND GST 63 | 3 Nnw Buffalo, WY | ASOS STATION KBYG BUFFALO AIRPORT. WEAK VIRGA SHOWER PASSED OVER SITE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 8.0 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
- 3709 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
378 WWUS85 KRIW 161959 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 159 PM MDT Thu Sep 16 2021 WYZ277>279-288-289-171200- /O.NEW.KRIW.FW.W.0022.210917T1800Z-210918T0200Z/ /O.CON.KRIW.FW.W.0021.000000T0000Z-210917T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains- 159 PM MDT Thu Sep 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING AND IS ALSO IN EFFECT FROM NOON TO 8 PM MDT FRIDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect until 8 PM MDT this evening, as well as from noon to 8 PM MDT Friday. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...288...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: As low as 10 percent. * TEMPERATURES: Highs in the mid to upper 70s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of gusty winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-300-171200- /O.NEW.KRIW.FW.W.0022.210917T1800Z-210918T0200Z/ /O.CON.KRIW.FW.W.0021.000000T0000Z-210917T0200Z/ Natrona County/Casper BLM-Casper Mountain- 159 PM MDT Thu Sep 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING AND IS ALSO IN EFFECT FROM NOON TO 8 PM MDT FRIDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect until 8 PM this evening, as well as from noon to 8 PM MDT Friday. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY...Fire Weather Zones 280 and 300. * COUNTIES AFFECTED: In Central WY...Natrona. * WIND: Northeast 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 11 percent. * TEMPERATURES: Highs from the upper 70s to low 80s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of gusty winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ281-285-286-414-416-171200- /O.NEW.KRIW.FW.W.0022.210917T1800Z-210918T0200Z/ Johnson County/Casper BLM-South Bighorn Mountains- Absaroka Mountains/North Shoshone NF- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 159 PM MDT Thu Sep 16 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT FRIDAY... The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Friday. * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zone....285. In North Central WY Fire Zone....281. In Northwest WY Fire Zone....286. In West Central WY Fire Zones...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In West Central WY...Lincoln...Sublette. * WIND: Southwest 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 12 percent in the lower elevations, and 15 percent in the mountains. * TEMPERATURES: Highs in the low 80s in the lower elevations, and low 70s in the mountains. 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. && $$ WYZ283-170200- /O.CON.KRIW.FW.W.0021.000000T0000Z-210917T0200Z/ Upper Wind River Basin/Wind River Basin- 159 PM MDT Thu Sep 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY...Fire Weather Zone 283. * COUNTIES AFFECTED: In Central WY...Fremont. * WIND: Northwest 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 12 percent. * TEMPERATURES: Highs in the upper 70s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of gusty winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
7 follow-up statements
236 WWUS85 KRIW 170232 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 832 PM MDT Thu Sep 16 2021 WYZ277>281-285-286-288-289-300-414-416-171300- /O.CON.KRIW.FW.W.0022.210917T1800Z-210918T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Natrona County/Casper BLM-Johnson County/Casper BLM- South Bighorn Mountains-Absaroka Mountains/North Shoshone NF- 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- 832 PM MDT Thu Sep 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT FRIDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Gusty Winds will create erratic fire behavior if any new fires start. * AFFECTED AREA: In Central WY Fire Zones...280...285...288...289...300. In North Central WY Fire Zone....281. In Northwest WY Fire Zone....286. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zones...278...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: Southwest 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 11 percent. * TEMPERATURES: Highs in the mid 70s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of gusty winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
955
WWUS85 KRIW 170801
RFWRIW
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
201 AM MDT Fri Sep 17 2021
WYZ280-281-172300-
/O.EXT.KRIW.FW.W.0022.210917T1800Z-210919T0200Z/
Natrona County/Casper BLM-Johnson County/Casper BLM-
201 AM MDT Fri Sep 17 2021
...RED FLAG WARNING NOW IN EFFECT FROM NOON TODAY TO 8 PM MDT
SATURDAY...
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds will create erratic fire behavior and new
fire starts.
* AFFECTED AREA:
In Central WY Fire Zone....280.
In North Central WY Fire Zone....281.
* COUNTIES AFFECTED:
In Central WY...Natrona.
In North Central WY...Johnson.
* WIND: Zone 281: South 20 to 25 mph with gusts up to 45 mph.
Zone 280: Southwest 15 to 20 mph with gusts up to 25 mph.
* HUMIDITY: As low as 12 percent.
* TEMPERATURES: Today: Highs in the lower 80s.
Saturday: Highs in the middle to upper 80s.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of gusty
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
WYZ277>279-285-286-288-289-300-414-416-172300-
/O.CON.KRIW.FW.W.0022.210917T1800Z-210918T0200Z/
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
South Bighorn Mountains-Absaroka Mountains/North Shoshone NF-
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-
201 AM MDT Fri Sep 17 2021
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT
THIS EVENING...
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds will create erratic fire behavior and new
fire starts.
* AFFECTED AREA:
In Central WY Fire Zones...285...288...289...300.
In Northwest WY Fire Zone....286.
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zones...278...414...416.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Hot Springs...Johnson...Park...Washakie.
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: Southwest 15 to 20 mph with gusts up to 35 mph.
* HUMIDITY: As low as 12 percent.
* TEMPERATURES: Highs in the lower 70s.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of gusty
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
http://weather.gov/riverton717 WWUS85 KRIW 172015 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 215 PM MDT Fri Sep 17 2021 WYZ277>279-285-286-288-289-300-414-416-180200- /O.CON.KRIW.FW.W.0022.000000T0000Z-210918T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- South Bighorn Mountains-Absaroka Mountains/North Shoshone NF- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 215 PM MDT Fri Sep 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zones...285...288...289...300. In Northwest WY Fire Zone....286. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zones...278...414...416. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Park...Washakie. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 15 percent in the higher elevations, and as low as 10 to 12 percent in the lower elevations. * TEMPERATURES: Highs in the upper 60s in the higher elevations, and in the upper 70s to around 80 in the lower elevations. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of gusty winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ WYZ280-281-180200- /O.CON.KRIW.FW.W.0022.000000T0000Z-210919T0200Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- 215 PM MDT Fri Sep 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Central WY Fire Zone....280. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Natrona. In North Central WY...Johnson. * WIND: Southwest 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Highs in the 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 gusty winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
872 WWUS85 KRIW 180143 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 743 PM MDT Fri Sep 17 2021 WYZ277>279-285-286-288-289-300-414-416-180245- /O.EXP.KRIW.FW.W.0022.000000T0000Z-210918T0200Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- South Bighorn Mountains-Absaroka Mountains/North Shoshone NF- East Wind River Mountains/South Shoshone NF- Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain- Salt and Wyoming Ranges/West Zone Bridger Teton NF- West Wind River Mountains/East Zone Bridger Teton NF- 743 PM MDT Fri Sep 17 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Wind speeds will decrease into the overnight hours with increasing humidity values as temperatures decrease. As a result red flag conditions will no longer occur tonight, so the red flag warning will be allowed to expire at 8PM MDT. $$ WYZ280-281-181345- /O.CON.KRIW.FW.W.0022.000000T0000Z-210919T0200Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- 743 PM MDT Fri Sep 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT SATURDAY... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds will create erratic fire behavior if new fires start. * AFFECTED AREA: In Central WY Fire Zone....280. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Natrona. In North Central WY...Johnson. * WIND: Southwest 15 to 25 mph with gusts up to 40 mph. * HUMIDITY: As low as 9 percent. * TEMPERATURES: Lows in the lower 50s. Highs in the mid 80s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of gusty winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/riverton
084
WWUS85 KRIW 180917
RFWRIW
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
317 AM MDT Sat Sep 18 2021
WYZ275-276-282-285-287-182300-
/O.EXB.KRIW.FW.W.0022.210918T1800Z-210919T0200Z/
North Big Horn Basin/Worland BLM-Cody Foothills-
South Big Horn Basin/Worland BLM-South Bighorn Mountains-
Owl Creek Mountains-
317 AM MDT Sat Sep 18 2021
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...
The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon today to 8 PM MDT this
evening.
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds will create erratic fire behavior and new
fire starts.
* AFFECTED AREA:
In Central WY Fire Zone....285.
In North Central WY Fire Zones...275...276...282...287.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Big Horn...Hot Springs...Johnson...Park
Washakie.
* WIND: Southwest 15 to 25 mph with gusts up to 40 mph.
* HUMIDITY: As low as 13 percent.
* TEMPERATURES: Highs around 80 in the higher elevations. Highs in
the middle to upper 80s in the basin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of gusty
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
WYZ280-281-182300-
/O.CON.KRIW.FW.W.0022.000000T0000Z-210919T0200Z/
Natrona County/Casper BLM-Johnson County/Casper BLM-
317 AM MDT Sat Sep 18 2021
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS
EVENING...
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds will create erratic fire behavior and new
fire starts.
* AFFECTED AREA:
In Central WY Fire Zone....280.
In North Central WY Fire Zone....281.
* COUNTIES AFFECTED:
In Central WY...Natrona.
In North Central WY...Johnson.
* WIND: Southwest 15 to 25 mph with gusts up to 40 mph.
* HUMIDITY: 10 to 14 percent.
* TEMPERATURES: Highs 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 gusty
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
http://weather.gov/riverton287
WWUS85 KRIW 182033
RFWRIW
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
233 PM MDT Sat Sep 18 2021
WYZ275-276-282-285-287-190200-
/O.CON.KRIW.FW.W.0022.000000T0000Z-210919T0200Z/
North Big Horn Basin/Worland BLM-Cody Foothills-
South Big Horn Basin/Worland BLM-South Bighorn Mountains-
Owl Creek Mountains-
233 PM MDT Sat Sep 18 2021
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS
EVENING...
* IMPACTS: Low Humidities and Strong Gusty Winds will create
erratic fire behavior and new fire starts.
* AFFECTED AREA:
In Central WY Fire Zone....285.
In North Central WY Fire Zones...275...276...282...287.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Big Horn...Hot Springs...Johnson...Park...
Washakie.
* WIND: Southwest 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: As low as 12 percent.
* TEMPERATURES: Highs in the upper 70s.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of gusty
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
WYZ280-281-190200-
/O.CON.KRIW.FW.W.0022.000000T0000Z-210919T0200Z/
Natrona County/Casper BLM-Johnson County/Casper BLM-
233 PM MDT Sat Sep 18 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....280.
In North Central WY Fire Zone....281.
* COUNTIES AFFECTED:
In Central WY...Natrona.
In North Central WY...Johnson.
* WIND: Southwest 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: As low as 10 percent.
* TEMPERATURES: Highs in the mid 80s.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of gusty
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
http://weather.gov/riverton947 WWUS85 KRIW 190139 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 739 PM MDT Sat Sep 18 2021 WYZ275-276-282-285-287-190245- /O.EXP.KRIW.FW.W.0022.000000T0000Z-210919T0200Z/ North Big Horn Basin/Worland BLM-Cody Foothills- South Big Horn Basin/Worland BLM-South Bighorn Mountains- Owl Creek Mountains- 739 PM MDT Sat Sep 18 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Humidity has risen as temperatures have cooled. It will remain breezy to windy through much of the night. Red Flag conditions are not expected overnight, so the Red Flag Warning will be allowed to expire at 8 PM MDT. $$ WYZ280-281-190245- /O.EXP.KRIW.FW.W.0022.000000T0000Z-210919T0200Z/ Natrona County/Casper BLM-Johnson County/Casper BLM- 739 PM MDT Sat Sep 18 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Humidity has risen as temperatures have cooled. It will remain breezy to windy through much of the night. Red Flag conditions are not expected overnight, so the Red Flag Warning will be allowed to expire at 8 PM MDT. $$ http://weather.gov/riverton
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.