Alert archive / Wyoming / Red Flag Warnings in 2011
Red Flag Warning 7, NWS Riverton, WY
NWS Riverton, WY issued this red flag warning at Aug 31, 2011, 2:20 AM MDT for 11 counties in Wyoming. It took effect at Aug 31, 2011, 12:00 PM MDT. It was in force for 8 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, 2011, 2:20 AM MDT (08:20 UTC)
- In effect from
- Aug 31, 2011, 12:00 PM MDT
- Expired
- Aug 31, 2011, 8:00 PM MDT
- In force
- 8 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, Uinta County, WY, Washakie County, WY
The radar
The Riverton/Lander radar (KRIW), 21 km from the middle of the area, began a volume at 08:19 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 00:00Z, 8.3 hours before the alert went out and 26 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
- 17 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 3815 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
981 WWUS85 KRIW 310820 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 220 AM MDT WED AUG 31 2011 ...EXTREME FIRE WEATHER CONDITIONS EXPECTED FOR MUCH OF CENTRAL AND SOUTHWEST WYOMING THIS AFTERNOON AND EVENING... .AN APPROACHING COLD FRONT AND STRENGTHENING PRESSURE GRADIENT WILL CREATE STRONG WINDS ACROSS THE AREA. THE WINDS COMBINED WITH WARM TO HOT TEMPERATURES AND LOW RELATIVE HUMIDITIES WILL CREATE WIDESPREAD RED FLAG CONDITIONS THIS AFTERNOON AND EARLY EVENING. WYZ275-276-282-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ NORTH BIG HORN BASIN/WORLAND BLM-CODY FOOTHILLS- SOUTH BIG HORN BASIN/WORLAND BLM- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 275...276 AND 282... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONES 275...276 AND 282. * WINDS...SOUTH TO SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH...SHIFTING NORTH IN DURING THE EVENING. * RELATIVE HUMIDITY...10-15 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ286-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ ABSAROKA MOUNTAINS/NORTH SHOSHONE NF- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 286... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 286. * WINDS...SOUTHWEST TO WEST 20 TO 35 MPH WITH GUSTS OF 40 TO 50 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ285-287-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ SOUTH BIGHORN MOUNTAINS-OWL CREEK MOUNTAINS- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 285 AND 287... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONES 285 AND 287. * WINDS...SOUTHWEST 20 TO 30 MPH WITH GUSTS TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ281-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ JOHNSON COUNTY/CASPER BLM- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 281... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 281. * WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH...SHIFTING NORTH DURING THE EVENING. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ280-300-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ NATRONA COUNTY/CASPER BLM-CASPER MOUNTAIN- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 280 AND 300... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONES 280 AND 300. * WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 11 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ283-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ UPPER WIND RIVER BASIN/WIND RIVER BASIN- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 283... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 283. * WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 11 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ289-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 289... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 289. * WINDS...SOUTHWEST 15 TO 30 MPH WITH GUSTS TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ279-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 279... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 279. * WINDS...SOUTHWEST 20 TO 30 MPH WITH GUSTS TO 45 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ277-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 277... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 277. * WINDS...SOUTHWEST TO WEST 20 TO 30 MPH WITH GUSTS TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ278-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 278... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 278. * WINDS...SOUTHWEST 20 TO 30 MPH WITH GUSTS TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ288-311800- /O.UPG.KRIW.FW.A.0004.110831T1800Z-110901T0200Z/ /O.NEW.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF- 220 AM MDT WED AUG 31 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 288... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONE 288. * WINDS...SOUTHWEST TO WEST 20 TO 35 MPH WITH GUSTS OF 40 TO 50 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/RIVERTON
2 follow-up statements
867 WWUS85 KRIW 311743 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 1143 AM MDT WED AUG 31 2011 ...EXTREME FIRE WEATHER CONDITIONS EXPECTED FOR MUCH OF CENTRAL AND SOUTHWEST WYOMING THIS AFTERNOON AND EVENING... .AN APPROACHING COLD FRONT AND STRENGTHENING PRESSURE GRADIENT WILL CREATE STRONG WINDS ACROSS THE AREA. THE WINDS COMBINED WITH WARM TO HOT TEMPERATURES AND LOW RELATIVE HUMIDITIES WILL CREATE WIDESPREAD RED FLAG CONDITIONS THIS AFTERNOON AND EARLY EVENING. WYZ275-276-282-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ NORTH BIG HORN BASIN/WORLAND BLM-CODY FOOTHILLS- SOUTH BIG HORN BASIN/WORLAND BLM- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 275... 276 AND 282... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 275...276 AND 282. * WINDS...SOUTHWEST 15 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ286-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ ABSAROKA MOUNTAINS/NORTH SHOSHONE NF- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 286... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 286. * WINDS...SOUTHWEST 20 TO 25 MPH WITH GUSTS UP TO 45 MPH. * RELATIVE HUMIDITY...AS LOW AS 14 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ285-287-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ SOUTH BIGHORN MOUNTAINS-OWL CREEK MOUNTAINS- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 285 AND 287... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 285 AND 287. * WINDS...SOUTHWEST 20 TO 25 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ281-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ JOHNSON COUNTY/CASPER BLM- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 281... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 281. * WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ280-300-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ NATRONA COUNTY/CASPER BLM-CASPER MOUNTAIN- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 280 AND 300... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 280 AND 300. * WINDS...SOUTHWEST 20 TO 25 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ283-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ UPPER WIND RIVER BASIN/WIND RIVER BASIN- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 283... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 283. * WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ289-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 289... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 289. * WINDS...SOUTHWEST 25 TO 30 MPH WITH GUSTS UP TO 45 MPH. * RELATIVE HUMIDITY...AS LOW AS 11 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ279-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 279... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 279. * WINDS...SOUTHWEST 20 TO 25 MPH WITH GUSTS UP TO 45 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ277-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 277... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 277. * WINDS...SOUTHWEST 20 TO 30 MPH WITH GUSTS UP TO 45 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ278-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 278... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 278. * WINDS...SOUTHWEST 20 TO 25 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WYZ288-010200- /O.CON.KRIW.FW.W.0007.110831T1800Z-110901T0200Z/ EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF- 1143 AM MDT WED AUG 31 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 288... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 288. * WINDS...SOUTHWEST 25 TO 35 MPH WITH GUSTS UP TO 55 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING. ANY FIRES HAVE A HIGH POTENTIAL TO EXHIBIT EXTREME BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/RIVERTON
831 WWUS85 KRIW 010203 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 803 PM MDT WED AUG 31 2011 WYZ275-276-282-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ NORTH BIG HORN BASIN/WORLAND BLM-CODY FOOTHILLS- SOUTH BIG HORN BASIN/WORLAND BLM- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 275... 276 AND 282... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. A COLD FRONT WILL CONTINUE TO MOVE SOUTH ACROSS THE BIG HORN BASIN THIS EVENING. MUCH HIGHER HUMIDITIES WILL MOVE IN ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. $$ WYZ286-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ ABSAROKA MOUNTAINS/NORTH SHOSHONE NF- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 286... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE AS THE EVENING ADVANCES...ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. GUSTY WINDS ARE SWILL LIKELY OVERNIGHT. $$ WYZ285-287-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ SOUTH BIGHORN MOUNTAINS-OWL CREEK MOUNTAINS- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 285 AND 287... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE AS THE EVENING ADVANCES...ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. GUSTY WINDS ARE SWILL LIKELY OVERNIGHT. $$ WYZ281-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ JOHNSON COUNTY/CASPER BLM- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 281... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. A COLD FRONT WILL CONTINUE TO MOVE SOUTH ACROSS JOHNSON COUNTY THIS EVENING. MUCH HIGHER HUMIDITIES WILL MOVE IN ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. $$ WYZ280-300-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ NATRONA COUNTY/CASPER BLM-CASPER MOUNTAIN- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 280 AND 300... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE AS THE EVENING ADVANCES...ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. GUSTY WINDS ARE SWILL LIKELY OVERNIGHT. $$ WYZ283-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ UPPER WIND RIVER BASIN/WIND RIVER BASIN- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 283... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE AND WINDS WILL DIMINISH AS THE EVENING ADVANCES...ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE...THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. $$ WYZ289-010300- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 289... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE AND WINDS WILL DIMINISH AS THE EVENING ADVANCES...ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE...THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. $$ WYZ279-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 279... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE AND WINDS WILL DIMINISH AS THE EVENING ADVANCES...ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE...THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. $$ WYZ277-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 277... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE AND WINDS WILL DIMINISH AS THE EVENING ADVANCES...ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE...THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. $$ WYZ278-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 278... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE AND WINDS WILL DIMINISH AS THE EVENING ADVANCES...ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE...THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE. $$ WYZ288-010315- /O.EXP.KRIW.FW.W.0007.000000T0000Z-110901T0200Z/ EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF- 803 PM MDT WED AUG 31 2011 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 288... THE RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. HUMIDITIES WILL CONTINUE TO RISE AND WINDS WILL DIMINISH AS THE EVENING ADVANCES...ALLEVIATING THE RED FLAG CONDITIONS. THEREFORE...THE RED FLAG WARNING HAS BEEN 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 30, 8:13 PM MDT, 6 hours 7 minutes earlier.
Area forecast discussion, Aug 30, 8:13 PM MDT, 6 hours 7 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 813 PM MDT TUE AUG 30 2011 .UPDATE... RED FLAG CONDITIONS HAVE ALLEVIATED ACROSS THE WARNED AREAS THIS EVENING AND HAVE THEREFORE ALLOWED THE PRODUCT TO EXPIRE. THE FIRE WEATHER WATCH REMAINS IN EFFECT FOR MUCH OF SOUTHWEST AND CENTRAL WYOMING ON WEDNESDAY. .SHORT TERM...TONIGHT THROUGH FRIDAY ISOLATED THUNDERSTORMS FIRING ACROSS THE SOUTHWEST AND EVEN TRYING TO MAKE IT OVER THE WINDS. ALREADY EXPANDED THE ISOLATED COVERAGE TO INCLUDE THE WIND RIVER BASIN AND GREEN...RATTLESNAKE RANGES THROUGH THIS EVENING. ANOTHER DISTURBANCE APPEARS TO BE DEVELOPING OVER EAST CENTRAL NEVADA AND THIS WILL LIKELY PRODUCE ANOTHER ROUND OF SHOWERS AND ISOLATED THUNDERSTORMS OVER THE SOUTHWEST LATER TONIGHT AND SPREADING NORTHWARD INTO WEDNESDAY MORNING. INCREASING MID LEVEL WINDS SHOULD RESULT IN A WINDY NIGHT FOR THE MOUNTAINS WITH THESE WINDS DEVELOPING ACROSS THE LOWER ELEVATIONS BY AFTERNOON AND CONTINUING THROUGH THE EVENING. WIDESPREAD RED FLAG CONDITIONS ARE QUITE POSSIBLE ACROSS THE SOUTHWEST AND CENTRAL ZONES DUE TO THE COMBINATION OF THESE WINDS...VERY WARM TO HOT TEMPS...LOW RH'S UNDER 15 PERCENT AND EVEN ISOLATED DRY THUNDERSTORMS. A LEAD SHORTWAVE AHEAD OF OUR THURSDAY TROUGH WILL PUSH A COLD FRONT THROUGH MONTANA AND INTO FAR NORTHERN WYOMING BY WEDNESDAY EVENING. THIS FRONT WILL GET A BETTER PUSH WEDNESDAY NIGHT INTO THURSDAY MORNING AS THE MAIN TROUGH GETS CLOSER. TOUGH CALL ON HIGH TEMPERATURES THURSDAY FROM CASPER TO RIVERTON AND LANDER WHERE THE FRONT MAY BE LOCATED. SOUTH OF THIS FRONT...IT WILL REMAIN WARM AND VERY DRY WITH CRITICAL FIRE WEATHER CONDITIONS POSSIBLY CONTINUING. SHOWERS AND THUNDERSTORMS WILL INCREASE ACROSS THE NORTH LATE WEDNESDAY NIGHT INTO THURSDAY CONSIDERABLE MID LEVEL COOLING. NOT AS COOL AS SOME EARLY FORECASTS BUT STILL A DECENT LATE SUMMER FRONTAL PASSAGE. COULD SEE SOME STRONGER STORMS ALONG THE FRONT AS THE TROUGH DYNAMICS SWING THROUGH LATE THURSDAY. WE WILL ALSO LIKELY SEE A DUSTING OF SNOW ABOVE 10K-11K IN THE NORTHWEST MOUNTAINS THURSDAY INTO THURSDAY EVENING. A QUICK RECOVERY HAPPENS FRIDAY AS ANOTHER TROUGH SWINGS INTO MONTANA CREATING A LEE SIDE LOW OVER MONTANA AND INCREASING SOUTHWEST WINDS AGAIN OVER MUCH OF CENTRAL AND WESTERN WYOMING. COULD SEE ANOTHER DAY OF CRITICAL FIRE WEATHER CONDITIONS FRIDAY AFTERNOON. .LONG TERM...FRIDAY NIGHT THROUGH TUESDAY MID RANGE FORECAST MODELS ARE IN DISAGREEMENT ON THE EVOLUTION OF THE LONGWAVE PATTERN. THE ECMWF IS MORE PROGRESSIVE AND DAMPENS THE WAVES COMING OFF THE WEST COAST. HAVE SIDED WITH GFS SOLUTION FOR SATURDAY BRINGING A MORE VIGOROUS WAVE THROUGH MONTANA AND CLIPPING NORTHEAST WYOMING. THIS WOULD BRING WINDY CONDITIONS TO THE BIGHORNS AND POTENTIALLY JOHNSON AND NATRONA COUNTIES AS WELL AS A ROUND OF SHOWERS AND THUNDERSTORMS. MODELS ARE HOWEVER IN AGREEMENT ON BUILDING A RIDGE OVER THE WESTERN CONUS BRINGING DRY CONDITIONS AND A SLOW WARMING TREND. THIS RIDGE WILL ALLOW THE MONSOON TO WELL UP ONCE AGAIN FROM THE SOUTHWEST. SUBTROPICAL MOISTURE WILL SURGE NORTHWARD MONDAY PERHAPS REACHING SOUTHERN PORTIONS OF THE CWA BY THE AFTERNOON HOURS. IF SO...SHOWERS AND THUNDERSTORMS CAN BE EXPECTED IN THAT AREA. MONSOONAL MOISTURE SHOULD RETURN FOR TUESDAY BRINGING CONVECTION TO A LARGER PORTION OF THE CWA. .AVIATION... ISOLATED SHOWERS AND THUNDERSTORMS ARE POSSIBLE THROUGH 06Z ACROSS AREAS WEST OF A KJAC TO KRKS LINE. BREEZY CONDITIONS CAN BE EXPECTED IN MOST AREAS WITH 20 TO 25KT WINDS. PERIODIC MVFR CONDITIONS ARE POSSIBLE BETWEEN 08Z AND 18Z IN THE WEST AND NORTH AS A DISTURBANCE BRINGS ISOLATED TO SCATTERED SHOWERS FROM KJAC THROUGH KCOD. WINDY BUT VFR CONDITIONS REDEVELOP AFTER 18Z FOR MUCH OF THE AREA WITH THE GREATEST WIND IMPACT ALONG A KRKS TO KCPR LINE WHERE SOUTHWEST 25 TO 35KT WIND WITH GUSTS OVER 40KT LIKELY. .FIRE WEATHER... RED FLAG WARNINGS CONTINUE FOR FIRE ZONES 280...285...286 AND 288 THROUGH 8 PM THIS EVENING AND THEN FIRE WEATHER WATCHES COVER ALL OF SOUTHWEST AND CENTRAL WYOMING WEDNESDAY AFTERNOON AND EVENING. ISOLATED DRY LIGHTNING STORMS ARE ALSO EXPECTED THROUGH WEDNESDAY. WINDS WILL INCREASE IN THE MOUNTAINS TONIGHT AND CONTINUE THROUGH WEDNESDAY...SPREADING ONTO THE LOWER ELEVATIONS BY EARLY AFTERNOON. WIDESPREAD RED FLAG CONDITIONS MAY DEVELOP ACROSS MUCH OF THE AREA WEDNESDAY AFTERNOON DUE TO THE COMBINATION OF STRONG SOUTHWEST WINDS ...VERY WARM TO HOT TEMPERATURES...LOW RH'S AND ISOLATED DRY LIGHTNING. A STRONG COLD FRONT WILL ALSO START MOVING INTO THE NORTHERN ZONES BY WEDNESDAY EVENING AND THEN SPREAD INTO THE CENTRAL ZONES THURSDAY MORNING. MORE CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE IN THE SOUTHERN THURSDAY THURSDAY AFTERNOON. FRIDAY APPEARS TO BE ANOTHER DRY...WARM AND WINDY DAY ACROSS MUCH OF THE AREA WITH MORE CRITICAL FIRE WEATHER CONDITIONS POSSIBLE. && .RIW WATCHES/WARNINGS/ADVISORIES... FIRE WEATHER WATCH FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING WYZ275>283-285>289-300. && UPDATE...TWB SHORT TERM...SKRBAC LONG TERM...BERC AVIATION...BERC FIRE WEATHER...SKRBAC
Hazardous weather outlook, Aug 30, 8:15 PM MDT, 6 hours 5 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 815 PM MDT TUE AUG 30 2011 WYZ001>020-022>030-311200- ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST- BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS- EAST SWEETWATER COUNTY-FLAMING GORGE- GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS- NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN- NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS- ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES- SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN- SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY- TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN- UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN- WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST- YELLOWSTONE NATIONAL PARK- 815 PM MDT TUE AUG 30 2011 ...FIRE WEATHER WATCH FOR ALL OF SOUTHWEST AND CENTRAL WYOMING WEDNESDAY AFTERNOON AND EARLY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TONIGHT ISOLATED THUNDERSTORMS ARE EXPECTED ACROSS MAINLY WESTERN WYOMING...ESPECIALLY DURING THE EVENING HOURS. STRONG WINDS AND DANGEROUS CLOUD TO GROUND LIGHTNING WILL BE THE MAIN HAZARDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY WEDNESDAY...ISOLATED THUNDERSTORMS. INCREASED FIRE DANGER DUE TO VERY WARM TEMPERATURES...LOW RELATIVE HUMIDITY AND WINDY CONDITIONS. THURSDAY...SCATTERED THUNDERSTORMS NORTH AND CENTRAL. SOME STRONGER STORMS ARE POSSIBLE. INCREASED FIRE DANGER SOUTH WITH STRONG...MAINLY DRY COLD FRONT PASSAGE. FRIDAY...INCREASED FIRE DANGER SOUTH AND CENTRAL DUE TO WARM TEMPERATURES...LOW RELATIVE HUMIDITY AND WINDY CONDITIONS. MONDAY...ISOLATED THUNDERSTORMS SOUTH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. TEAM RIVERTON
In the hours before
Special weather statement, Aug 31, 2:00 AM MDT, 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 200 AM MDT WED AUG 31 2011 WYZ012-013-023-024-310900- JACKSON HOLE-SALT RIVER AND WYOMING RANGES-STAR VALLEY- TETON AND GROS VENTRE MOUNTAINS- 200 AM MDT WED AUG 31 2011 A FEW THUNDERSTORMS WILL PUSH ACROSS THE NORTHERN STAR VALLEY AND SOUTHERN JACKSON HOLE VALLEY THROUGH 4 A.M. THESE STORMS WILL MAINLY TRACK EAST BETWEEN ETNA AND SOUTH JACKSON. THE MAIN HAZARD WITH THESE STORMS WILL BE DANGEROUS CLOUD TO GROUND LIGHTNING. AEM
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 3:41 AM MDT | Special Weather Statement | RIW | 49 min | |
| Aug 31, 12:56 PM MDT | Special Weather Statement | RIW | Fremont | 49 min |
| Aug 31, 2:05 PM MDT | Special Weather Statement | RIW | Teton | 40 min |
| Aug 31, 3:22 PM MDT | Special Weather Statement | RIW | Sweetwater | 38 min |
| Aug 31, 3:23 PM MDT | Special Weather Statement | RIW | Big Horn | 52 min |
| Aug 31, 3:36 PM MDT | Special Weather Statement | RIW | Sweetwater | 39 min |
| Aug 31, 4:21 PM MDT | Special Weather Statement | RIW | Park | 24 min |
| Aug 31, 5:18 PM MDT | Special Weather Statement | RIW | Natrona | 42 min |
Nearby
Red Flag Warnings in Wyoming, 2011Every red flag warning in 2011
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.