Alert archive / Wyoming / Red Flag Warnings in 2012
Red Flag Warning 2, NWS Riverton, WY
NWS Riverton, WY issued this red flag warning at Mar 23, 2012, 2:43 AM MDT for Fremont County, Johnson County, Natrona County, Wyoming. It took effect at Mar 23, 2012, 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
- Mar 23, 2012, 2:43 AM MDT (08:43 UTC)
- In effect from
- Mar 23, 2012, 12:00 PM MDT
- Expired
- Mar 23, 2012, 8:16 PM MDT
- In force
- 8 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Johnson County, WY, Natrona County, WY
The radar
The Riverton/Lander radar (KRIW), 98 km from the middle of the area, began a volume at 08:43 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, 8.7 hours before the alert went out and 91 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
- 3645 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
715 WWUS85 KRIW 230843 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 243 AM MDT FRI MAR 23 2012 ...HAZARDOUS FIRE WEATHER BEHAVIOR EXPECTED TODAY... .INCREASING HIGH PRESSURE WILL RESULT IN ANOTHER DAY OF WARM AND DRY CONDITIONS ACROSS NATRONA COUNTY. ADDITIONALLY...WIND IS EXPECTED TO INCREASE THIS AFTERNOON WITH GUSTY WIND EXPECTED THROUGH THE EARLY EVENING HOURS. THESE ELEMENTS...COMBINED WITH CRITICALLY DRY FUELS...WILL RESULT IN DANGEROUS FIRE BEHAVIOR TODAY. WYZ280-232215- /O.NEW.KRIW.FW.W.0002.120323T1800Z-120324T0300Z/ NATRONA COUNTY/CASPER BLM- 243 AM MDT FRI MAR 23 2012 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 280... 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 9 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 280. * WINDS...SOUTHWEST 15 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...RESIDENTS OF NATRONA COUNTY ARE STRONGLY ENCOURAGED TO REFRAIN FROM BURNING ACTIVITIES THIS AFTERNOON. FIRES MAY QUICKLY GROW OUT OF CONTROL. 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. && $$ HTTP://WEATHER.GOV/RIVERTON
3 follow-up statements
689 WWUS85 KRIW 231820 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 1220 PM MDT FRI MAR 23 2012 ...HAZARDOUS FIRE WEATHER BEHAVIOR EXPECTED THIS AFTERNOON... .INCREASING HIGH PRESSURE WILL RESULT IN ANOTHER DAY OF WARM AND DRY CONDITIONS ACROSS NATRONA COUNTY. ADDITIONALLY...WIND IS EXPECTED TO REMAIN GUSTY THROUGH THE EARLY EVENING HOURS. THESE ELEMENTS...COMBINED WITH CRITICALLY DRY FUELS...WILL RESULT IN DANGEROUS FIRE BEHAVIOR TODAY. WYZ280-240300- /O.CON.KRIW.FW.W.0002.000000T0000Z-120324T0300Z/ NATRONA COUNTY/CASPER BLM- 1220 PM MDT FRI MAR 23 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 280... * AFFECTED AREA...FIRE WEATHER ZONE 280. * WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...RESIDENTS OF NATRONA COUNTY ARE STRONGLY ENCOURAGED TO REFRAIN FROM BURNING ACTIVITIES THIS AFTERNOON. FIRES MAY QUICKLY GROW OUT OF CONTROL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/RIVERTON
237 WWUS85 KRIW 231954 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 154 PM MDT FRI MAR 23 2012 ...HAZARDOUS FIRE WEATHER BEHAVIOR EXPECTED THIS AFTERNOON... .INCREASING HIGH PRESSURE WILL RESULT IN ANOTHER DAY OF WARM AND DRY CONDITIONS ACROSS FREMONT...JOHNSON AND NATRONA COUNTIES. ADDITIONALLY...WIND IS EXPECTED TO REMAIN GUSTY THROUGH THE EARLY EVENING HOURS. THESE ELEMENTS...COMBINED WITH CRITICALLY DRY FUELS...WILL RESULT IN DANGEROUS FIRE BEHAVIOR THIS AFTERNOON. WYZ281-283-240300- /O.EXA.KRIW.FW.W.0002.000000T0000Z-120324T0300Z/ JOHNSON COUNTY/CASPER BLM-UPPER WIND RIVER BASIN/WIND RIVER BASIN- 154 PM MDT FRI MAR 23 2012 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 281 AND 283... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT UNTIL 9 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 281 AND 283. * WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...RESIDENTS OF JOHNSON AND FREMONT COUNTIES ARE STRONGLY ENCOURAGED TO REFRAIN FROM BURNING ACTIVITIES THIS AFTERNOON. FIRES MAY QUICKLY GROW OUT OF CONTROL. 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. && $$ WYZ280-240300- /O.CON.KRIW.FW.W.0002.000000T0000Z-120324T0300Z/ NATRONA COUNTY/CASPER BLM- 154 PM MDT FRI MAR 23 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 280... * AFFECTED AREA...FIRE WEATHER ZONE 280. * WINDS...SOUTHWEST 15 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...RESIDENTS OF NATRONA COUNTY ARE STRONGLY ENCOURAGED TO REFRAIN FROM BURNING ACTIVITIES THIS AFTERNOON. FIRES MAY QUICKLY GROW OUT OF CONTROL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/RIVERTON
124 WWUS85 KRIW 240216 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 816 PM MDT FRI MAR 23 2012 WYZ280-281-283-240330- /O.CAN.KRIW.FW.W.0002.000000T0000Z-120324T0300Z/ NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM- UPPER WIND RIVER BASIN/WIND RIVER BASIN- 816 PM MDT FRI MAR 23 2012 ...RED FLAG WARNING IS CANCELLED FOR FIRE WEATHER ZONES 280...281 AND 283... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE RED FLAG WARNING. WIND SPEEDS HAVE DECREASED TO 10 TO 20 MPH WITH RELATIVE HUMIDITY RISING TO ABOVE 15 PERCENT. THEREFORE THE RED FLAG WARNING HAS BEEN CANCELLED. $$ HTTP://WEATHER.GOV/RIVERTON
Nearby
Red Flag Warnings in Wyoming, 2012Every red flag warning in 2012
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.