Alert archive / Wyoming / Red Flag Warnings in 2014
Red Flag Warning 13, NWS Riverton, WY
NWS Riverton, WY issued this red flag warning at Sep 25, 2014, 2:18 AM MDT for 4 counties in Wyoming. It took effect at Sep 25, 2014, 12:00 PM MDT. It was in force for 7 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
- Sep 25, 2014, 2:18 AM MDT (08:18 UTC)
- In effect from
- Sep 25, 2014, 12:00 PM MDT
- Expired
- Sep 25, 2014, 7:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Johnson County, WY, Natrona County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 63 km from the middle of the area, began a volume at 08:18 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 57 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
- 3118 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
748 WWUS85 KRIW 250818 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 218 AM MDT THU SEP 25 2014 ...CRITICAL FIRE WEATHER EXPECTED ACROSS PORTIONS OF CENTRAL WYOMING THIS AFTERNOON... .A GUSTY SOUTHWESTERLY BREEZE WILL COMBINE WITH LOW RELATIVE HUMIDITY...UNSEASONABLY WARM TEMPERATURES AND CRITICAL FUELS TO BRING CRITICAL FIRE CONDITIONS THIS AFTERNOON. WYZ280-281-289-252200- /O.UPG.KRIW.FW.A.0004.140925T1800Z-140926T0100Z/ /O.NEW.KRIW.FW.W.0013.140925T1800Z-140926T0100Z/ NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM- GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS- 218 AM MDT THU SEP 25 2014 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 280...281 AND 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 7 PM MDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONES 280...281 AND 289. * WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS OF 25 TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...CONDITIONS MAY BE FAVORABLE FOR INTENSE FIRES WITH RAPID RATES OF SPREAD. 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. && $$ HTTP://WEATHER.GOV/RIVERTON
2 follow-up statements
380 WWUS85 KRIW 251810 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 1210 PM MDT THU SEP 25 2014 ...CRITICAL FIRE WEATHER EXPECTED ACROSS PORTIONS OF CENTRAL WYOMING THIS AFTERNOON... .A GUSTY SOUTHWESTERLY BREEZE WILL COMBINE WITH LOW RELATIVE HUMIDITY...UNSEASONABLY WARM TEMPERATURES AND CRITICAL FUELS TO BRING CRITICAL FIRE CONDITIONS THIS AFTERNOON. WYZ280-281-289-260100- /O.CON.KRIW.FW.W.0013.000000T0000Z-140926T0100Z/ NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM- GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS- 1210 PM MDT THU SEP 25 2014 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 280... 281 AND 289... * AFFECTED AREA...FIRE WEATHER ZONES 280...281 AND 289. * WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...CONDITIONS MAY BE FAVORABLE FOR INTENSE FIRES WITH RAPID RATES OF SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$ HTTP://WEATHER.GOV/RIVERTON
153 WWUS85 KRIW 260039 RFWRIW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 639 PM MDT THU SEP 25 2014 WYZ280-281-289-260145- /O.EXP.KRIW.FW.W.0013.000000T0000Z-140926T0100Z/ NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM- GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS- 639 PM MDT THU SEP 25 2014 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 280...281 AND 289... WINDS HAVE WEAKENED EARLY THIS EVENING...AND ARE NO LONGER EXPECTED TO MEET RED FLAG CONDITIONS. THUS THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 7 PM. $$ 21
Nearby
Red Flag Warnings in Wyoming, 2014Every red flag warning in 2014
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.