Alert archive / Kentucky / Tornado Warnings in 2011

Tornado Warning 45, NWS Louisville, KY

April 22, 2011Clark County, Kentucky

NWS Louisville, KY issued this tornado warning at Apr 22, 2011, 7:55 PM EDT for Clark County, Kentucky. It was in force for 22 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 22, 2011, 7:55 PM EDT (23:55 UTC)
Expired
Apr 22, 2011, 8:17 PM EDT
In force
22 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon

County Clark County, KY

The radar

The Jackson,KY radar (KJKL), 87 km from the middle of the area, began a volume at 23:56 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.

What was reported inside it

TimeReportWhereRemark
Apr 22, 8:07 PM EDTFUNNEL CLOUDWinchester, KYHEAVY ROTATION.
Apr 22, 8:08 PM EDTHAIL 1.754 S North Middletown, KYGOLF BALL SIZED HAIL REPORTED ON THE BORDER BETWEEN CLARK... BOURBON... AND MONTGOMERY COUNTIES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 22, 6:49 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.9 hours before the alert went out and 159 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, Cncnati-Daytn, OH at 12:00Z on 2011-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2011-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 452 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1683 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
452 m²/s²
0-3 km storm-relative helicity
501 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

677 
WFUS53 KLMK 222355
TORLMK
KYC049-230030-
/O.NEW.KLMK.TO.W.0045.110422T2355Z-110423T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
755 PM EDT FRI APR 22 2011

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CLARK COUNTY IN EAST CENTRAL KENTUCKY...

* UNTIL 830 PM EDT...

* AT 752 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS           
  DANGEROUS   STORM WAS LOCATED NEAR JUDIANNE ESTATES AND            
  WINCHESTER...MOVING  EAST AT 40 MPH.

* THIS TORNADIC STORM WILL ALSO IMPACT...
  INTERSTATE 64 NEAR CONSTANT STATION...
  MOUNT ZION AND PRETTY RUN...
  THOMSON AND HEDGES...

THIS INCLUDES INTERSTATE 64 IN KENTUCKY BETWEEN MILE MARKERS 101 AND
98.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TO REPORT DAMAGING WINDS...LARGE HAIL...OR FLOODING 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 3798 8427 3805 8428 3811 8408 3805 8404
      3799 8400 3798 8400
TIME...MOT...LOC 2355Z 261DEG 39KT 3802 8419

$$

SCHOETTMER
2 follow-up statements
474 
WWUS53 KLMK 230009
SVSLMK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
809 PM EDT FRI APR 22 2011

KYC049-230030-
/O.CON.KLMK.TO.W.0045.000000T0000Z-110423T0030Z/
CLARK KY-
809 PM EDT FRI APR 22 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR NORTHERN
CLARK COUNTY...

AT 804 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH ROTATION. THIS TORNADO WAS LOCATED NEAR 
PRETTY RUN...MOVING NORTHEAST AT 35 MPH. STRONG ROTATION WAS JUST 
REPORTED BY A TRAINED SPOTTER NORTH OF WINCHESTER.

* THE TORNADO WILL ALSO IMPACT...

  MOUNT ZION...
  MAINLY RURAL AREAS OF NORTHERN CLARK COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TO REPORT DAMAGING WINDS...LARGE HAIL...OR FLOODING 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 3802 8418 3807 8422 3811 8408 3805 8404
      3803 8403
TIME...MOT...LOC 0007Z 245DEG 31KT 3807 8410

$$

SCHOETTMER
416 
WWUS53 KLMK 230017
SVSLMK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
817 PM EDT FRI APR 22 2011

KYC049-230026-
/O.CAN.KLMK.TO.W.0045.000000T0000Z-110423T0030Z/
CLARK KY-
817 PM EDT FRI APR 22 2011

...THE TORNADO WARNING FOR NORTHERN CLARK COUNTY IS CANCELLED...

THE STORMS THAT PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED
AREA.

TO REPORT DAMAGING WINDS...LARGE HAIL...OR FLOODING 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 3802 8418 3807 8422 3811 8408 3805 8404
      3803 8403
TIME...MOT...LOC 0016Z 245DEG 31KT 3810 8401

$$

SCHOETTMER

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 22, 11:59 AM EDTSpecial Weather StatementLMKGrayson31 min
Apr 22, 1:20 PM EDTSpecial Weather StatementLMKHardin25 min
Apr 22, 3:28 PM EDTSpecial Weather StatementLMKGarrard47 min
Apr 22, 4:07 PM EDTSevere Thunderstorm WarningLMKMeade23 min
Apr 22, 4:33 PM EDTSpecial Weather StatementLMKTrimble42 min
Apr 22, 4:43 PM EDTSpecial Weather StatementLMKJefferson, Oldham47 min
Apr 22, 5:41 PM EDTSpecial Weather StatementLMKSpencer34 min
Apr 22, 5:54 PM EDTSevere Thunderstorm WarningLMKBullitt, Jefferson, Shelby, Spencer36 min
Apr 22, 6:01 PM EDTTornado WarningLMKAnderson, Shelby, Spencer29 min
Apr 22, 6:04 PM EDTAreal Flood AdvisoryLMKBullitt, Jefferson, Shelby, Spencer93 min
Apr 22, 6:25 PM EDTTornado WarningLMKAnderson, Franklin, Shelby, Spencer, Woodford35 min
Apr 22, 6:55 PM EDTTornado WarningLMKAnderson, Fayette, Jessamine, Woodford35 min
Apr 22, 7:03 PM EDTSpecial Weather StatementLMKShelby27 min
Apr 22, 7:26 PM EDTTornado WarningLMKBourbon, Clark, Fayette34 min
Apr 22, 7:39 PM EDTAreal Flood AdvisoryLMKBourbon, Clark, Fayette, Franklin, Harrison, Scott and 1 more111 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.