Alert archive / Kentucky / Red Flag Warnings in 2011
Red Flag Warning 3, NWS Louisville, KY
NWS Louisville, KY issued this red flag warning at Apr 18, 2011, 1:41 AM CDT for 10 counties in Kentucky. It took effect at Apr 18, 2011, 12:00 PM CDT. It was in force for 2 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
- Apr 18, 2011, 1:41 AM CDT (06:41 UTC)
- In effect from
- Apr 18, 2011, 12:00 PM CDT
- Expired
- Apr 18, 2011, 2:21 PM CDT
- In force
- 2 hr
- Issued by
- NWS Louisville, KY
Counties Adair County, KY, Casey County, KY, Clinton County, KY, Cumberland County, KY, Garrard County, KY, Lincoln County, KY, Madison County, KY, Metcalfe County, KY, Monroe County, KY, Russell County, KY
The radar
The Louisville radar (KLVX), 121 km from the middle of the area, began a volume at 06:46 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
Nashville Metro, TN (KBNA), launched 00:00Z, 6.7 hours before the alert went out and 178 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
- 2519 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
910 WWUS83 KLMK 180641 RFWLMK URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LOUISVILLE KY 241 AM EDT MON APR 18 2011 ...HAZARDOUS BURNING CONDITIONS THIS AFTERNOON... .THE COMBINATION OF STRONG SOUTHWESTERLY SURFACE WINDS...LOW RELATIVE HUMIDITY VALUES IN THE 20 TO 30 PERCENT RANGE..AND DRY SMALL FUELS WILL RESULT IN CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON. THE LAKE CUMBERLAND REGION NORTHWARD ACROSS THE I-75 CORRIDOR WILL BE UNDER HAZARDOUS BURNING CONDITIONS AND THE POTENTIAL FOR UNCONTROLLED AND EXPLOSIVE FIRE GROWTH WILL EXIST. KYZ056-057-066-067-075>078-081-082-181600- /O.NEW.KLMK.FW.W.0003.110418T1700Z-110419T0000Z/ GARRARD KY-MADISON KY-CASEY KY-LINCOLN KY-MONROE KY-METCALFE KY- ADAIR KY-RUSSELL KY-CUMBERLAND KY-CLINTON KY- 241 AM EDT MON APR 18 2011 /141 AM CDT MON APR 18 2011/ ...RED FLAG WARNING IN EFFECT FROM 1 PM EDT /NOON CDT/ THIS AFTERNOON TO 8 PM EDT /7 PM CDT/ THIS EVENING... THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM EDT /NOON CDT/ THIS AFTERNOON TO 8 PM EDT /7 PM CDT/ THIS EVENING. SUSTAINED SOUTHWESTERLY SURFACE WINDS BETWEEN 10 AND 20 MPH... GUSTING BETWEEN 20 AND 30 MPH AT TIMES WILL COMBINE WITH RELATIVE HUMIDITY VALUES DROPPING INTO THE 20 TO 30 PERCENT RANGE THIS AFTERNOON. SMALL FUELS ARE ALSO CONTINUING TO DRY AND 10 HOUR FUEL MOISTURES ARE EXPECTED TO FALL INTO THE 7 TO 10 PERCENT RANGE. THESE CONDITIONS WILL CREATE THE POTENTIAL FOR EXPLOSIVE AND UNCONTROLLED FIRE GROWTH. 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. && $$ BJS
1 follow-up statement
226 WWUS83 KLMK 181921 RFWLMK URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LOUISVILLE KY 321 PM EDT MON APR 18 2011 KYZ056-057-066-067-075>078-081-082-182030- /O.CAN.KLMK.FW.W.0003.000000T0000Z-110419T0000Z/ GARRARD KY-MADISON KY-CASEY KY-LINCOLN KY-MONROE KY-METCALFE KY- ADAIR KY-RUSSELL KY-CUMBERLAND KY-CLINTON KY- 321 PM EDT MON APR 18 2011 /221 PM CDT MON APR 18 2011/ ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS CANCELLED THE RED FLAG WARNING. ALTHOUGH RELATIVE HUMIDITIES MAY FALL TO NEAR 25% ACROSS CLINTON AND CUMBERLAND COUNTIES...FUEL MOISTURES WERE AROUND 10% AT 2 PM...AND WILL HAVE TROUBLE FALLING BELOW THE 8% THRESHOLD. SURFACE WINDS WILL AVERAGE 12 TO 15 MPH WITH HIGHER GUSTS FOR THE REST OF THIS AFTERNOON. MORE HUMID AIR WILL ARRIVE THIS EVENING AND CONTINUE TOMORROW. $$ JSD
Nearby
Red Flag Warnings in Kentucky, 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.