Alert archive / Kentucky / Tornado Warnings in 2011

Tornado Warning 114, NWS Louisville, KY

September 25, 2011Butler County, Grayson County, Ohio County, Kentucky

NWS Louisville, KY issued this tornado warning at Sep 25, 2011, 9:12 PM CDT for Butler County, Grayson County, Ohio County, Kentucky. It was in force for 18 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 25, 2011, 9:12 PM CDT (02:12 UTC)
Expired
Sep 25, 2011, 9:30 PM CDT
In force
18 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon

Counties Butler County, KY, Grayson County, KY, Ohio County, KY

The radar

The Louisville radar (KLVX), 88 km from the middle of the area, began a volume at 02:15 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, 2.2 hours before the alert went out and 142 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.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2011-09-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1258 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2011-09-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 271 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1258 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
1166 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
271 m²/s²
0-3 km storm-relative helicity
400 m²/s²
Significant tornado parameter
1.7
Supercell composite
8.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

308 
WFUS53 KLMK 260212 RRA
TORLMK
KYC031-085-183-260230-
/O.NEW.KLMK.TO.W.0114.110926T0212Z-110926T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
912 PM CDT SUN SEP 25 2011

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN OHIO COUNTY IN NORTHWEST KENTUCKY...
  NORTHERN BUTLER COUNTY IN SOUTH CENTRAL KENTUCKY...
  WESTERN GRAYSON COUNTY IN SOUTH CENTRAL KENTUCKY...

* UNTIL 930 PM CDT...

* AT 908 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR SHULTZTOWN...MOVING NORTHEAST AT 45 MPH.

* THIS TORNADIC STORM WILL ALSO IMPACT...
  ARNOLD AND BAIZETOWN...
  DOGWALK AND STEFF...
  DO STOP AND PINE KNOB...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...STRONG
ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON 
THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. 

TAKE COVER NOW! TORNADOES AT NIGHT CAN BE EXTREMELY DANGEROUS. DO NOT
WAIT UNTIL YOU SEE OR HEAR THE TORNADO. IT MAY BE TOO LATE.

TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT...1...8 7 7...6 3 3...6 7 7 2...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3758 8651 3738 8633 3716 8686 3732 8696
TIME...MOT...LOC 0212Z 234DEG 39KT 3732 8677

$$

RS
1 follow-up statement
094 
WWUS53 KLMK 260229
SVSLMK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
929 PM CDT SUN SEP 25 2011

KYC031-085-183-260238-
/O.EXP.KLMK.TO.W.0114.000000T0000Z-110926T0230Z/
OHIO KY-BUTLER KY-GRAYSON KY-
929 PM CDT SUN SEP 25 2011

...THE TORNADO WARNING FOR WESTERN GRAYSON...NORTHERN BUTLER AND
SOUTHEASTERN OHIO COUNTIES WILL EXPIRE AT 930 PM CDT...

THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED AND ARE NO LONGER
SEVERE. HOWEVER STRONG STORMS REMAIN IN THE AREA. THESE ARE CAPABLE 
OF PRODUCING PERIODS OF HEAVY RAIN...GUSTY WINDS...AND DANGEROUS 
LIGHTNING.

TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT...1...8 7 7...6 3 3...6 7 7 2...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3758 8651 3738 8633 3716 8686 3732 8696
TIME...MOT...LOC 0228Z 234DEG 39KT 3742 8659

$$

RS

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 25, 8:44 PM CDTSpecial Weather StatementLMKButler, Logan, Ohio46 min
Sep 25, 9:12 PM CDTTornado WarningLMKButler, Logan, Warren33 min
Sep 25, 9:37 PM CDTTornado WarningLMKButler, Edmonson, Grayson23 min
Sep 25, 10:03 PM CDTTornado WarningLMKGrayson27 min
Sep 25, 10:26 PM CDTTornado WarningLMKGrayson19 min
Sep 25, 11:54 PM CDTSpecial Weather StatementLMKBullitt, Jefferson, Oldham51 min
Sep 26, 12:02 AM CDTAreal Flood AdvisoryLMKJefferson, Oldham118 min
Sep 26, 12:02 AM CDTSevere Thunderstorm WarningLMKBullitt, Jefferson28 min
Sep 26, 12:36 AM CDTSpecial Weather StatementLMKJefferson, Meade24 min
Sep 26, 1:26 AM CDTFlash Flood WarningLMKJefferson, Meade, Oldham5 hr
Sep 26, 5:18 AM CDTTornado WarningLMKBoyle, Garrard, Jessamine, Mercer, Woodford27 min
Sep 26, 5:33 AM CDTTornado WarningLMKCasey, Lincoln27 min
Sep 26, 6:22 AM CDTSpecial Weather StatementLMKClark23 min
Sep 26, 6:24 AM CDTSpecial Weather StatementLMKGarrard21 min
Sep 26, 6:47 AM CDTSpecial Weather StatementLMKClark, Garrard, Lincoln, Madison43 min
Sep 26, 6:48 AM CDTSpecial Weather StatementLMKClark, Garrard, Lincoln, Madison42 min
Sep 26, 7:17 AM CDTTornado WarningLMKClark13 min
Sep 26, 7:28 AM CDTSpecial Weather StatementLMKClark, Madison32 min

Nearby

Tornado Warnings in Kentucky, 2011Every tornado warning in 2011Tornadoes 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.