Alert archive / Kentucky / Tornado Warnings in 2011

Tornado Warning 10, NWS Jackson, KY

April 4, 2011Knott County, Leslie County, Perry County, Kentucky

NWS Jackson, KY issued this tornado warning at Apr 4, 2011, 5:35 PM EDT for Knott County, Leslie County, Perry County, Kentucky. It was in force for 40 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: Apr 4, 2011, 5:35 PM EDT (21:35 UTC)
Expired: Apr 4, 2011, 6:15 PM EDT
In force: 40 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon

Counties Knott County, KY, Leslie County, KY, Perry County, KY

The radar

The Jackson,KY radar (KJKL), 44 km from the middle of the area, began a volume at 21:38 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 4, 3:05 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.6 hours before the alert went out and 252 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 6 J/kg
Mixed-layer CIN: -333 J/kg
Mixed-layer LCL: 1160 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 324 m²/s²
0-3 km storm-relative helicity: 410 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.

981 
WFUS53 KJKL 042135
TORJKL
KYC119-131-193-042215-
/O.NEW.KJKL.TO.W.0010.110404T2135Z-110404T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON KY
535 PM EDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN JACKSON KY HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN KNOTT COUNTY IN SOUTHEAST KENTUCKY...
  NORTHERN LESLIE COUNTY IN SOUTHEAST KENTUCKY...
  PERRY COUNTY IN SOUTHEAST KENTUCKY...

* UNTIL 615 PM EDT

* AT 534 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR JACKS CREEK...OR 10 MILES WEST OF HYDEN...
  AND MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HYDEN...HAZARD...HINDMAN...BOBS FORK...SIZEROCK...SAUL...HOSEA...
  THOUSANDSTICKS...SHOAL...BUCKHORN LAKE S.P....KALIOPI...DRYHILL...
  CONFLUENCE...WENDOVER...MOSLEY BEND...TOULOUSE...KRYPTON...
  WOOTON...SMILAX AND AVAWAM.

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.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 3712 8355 3717 8355 3722 8351 3723 8353
      3724 8351 3730 8355 3737 8298 3720 8296
      3719 8297 3720 8301 3718 8304 3714 8306
      3711 8354
TIME...MOT...LOC 2135Z 264DEG 42KT 3720 8354

$$

GREIF

2 follow-up statements

619 
WWUS53 KJKL 042200
SVSJKL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
600 PM EDT MON APR 4 2011

KYC119-131-193-042215-
/O.CON.KJKL.TO.W.0010.000000T0000Z-110404T2215Z/
KNOTT KY-PERRY KY-LESLIE KY-
600 PM EDT MON APR 4 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL LESLIE...
EASTERN PERRY AND SOUTHWESTERN KNOTT COUNTIES UNTIL 615 PM EDT...

AT 555 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR AVAWAM...OR NEAR HAZARD...MOVING EAST AT 50
MPH.

LOCATIONS IMPACTED INCLUDE...
  HINDMAN...BULAN...VIPER...JEFF...CORDIA...FISTY...RITCHIE...ELIC...
  EMMALENA...VICCO...ANCO...WISCOAL...SASSAFRAS...CARRIE...TINA...
  SMITHSBORO...AMBURGEY...CODY AND CARR CREEK.

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.

&&

LAT...LON 3717 8324 3721 8327 3734 8323 3737 8298
      3720 8296 3719 8297 3720 8301 3718 8305
      3714 8306 3713 8326 3712 8328
TIME...MOT...LOC 2200Z 264DEG 42KT 3723 8318

$$

PELTON

354 
WWUS53 KJKL 042213 RRA
SVSJKL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
613 PM EDT MON APR 4 2011

KYC119-131-193-042224-
/O.EXP.KJKL.TO.W.0010.000000T0000Z-110404T2215Z/
KNOTT KY-PERRY KY-LESLIE KY-
613 PM EDT MON APR 4 2011

...THE TORNADO WARNING FOR EAST CENTRAL LESLIE...EASTERN PERRY AND
WESTERN KNOTT COUNTIES WILL EXPIRE AT 615 PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 3717 8324 3721 8327 3734 8323 3737 8298
      3720 8296 3719 8297 3720 8301 3718 8305
      3714 8306 3713 8326 3712 8328
TIME...MOT...LOC 2214Z 264DEG 42KT 3724 8298

$$

PELTON

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 8:06 PM EDT	Wind Advisory	JKL	Bath, Breathitt, Clay, Elliott, Estill, Fleming and 23 more	23 hr
Apr 4, 3:34 PM EDT	Severe Thunderstorm Warning	JKL	Bath, Fleming, Montgomery, Rowan	41 min
Apr 4, 3:38 PM EDT	Severe Thunderstorm Warning	JKL	Floyd, Knott, Letcher, Pike	37 min
Apr 4, 3:56 PM EDT	Severe Thunderstorm Warning	JKL	Estill, Lee, Menifee, Montgomery, Powell	49 min
Apr 4, 4:01 PM EDT	Severe Thunderstorm Warning	JKL	McCreary, Pulaski, Wayne	44 min
Apr 4, 4:17 PM EDT	Severe Thunderstorm Warning	JKL	Laurel, Pulaski, Rockcastle	43 min
Apr 4, 4:34 PM EDT	Tornado Warning	JKL	Laurel, Pulaski, Rockcastle	26 min
Apr 4, 4:39 PM EDT	Severe Thunderstorm Warning	JKL	Bell, Clay, Knox, Laurel, McCreary, Pulaski and 2 more	51 min
Apr 4, 4:41 PM EDT	Severe Thunderstorm Warning	JKL	Estill, Jackson, Lee, Owsley, Pulaski, Rockcastle	49 min
Apr 4, 4:41 PM EDT	Tornado Warning	JKL	Bell, Knox, McCreary, Wayne, Whitley	34 min
Apr 4, 4:54 PM EDT	Severe Thunderstorm Warning	JKL	Estill, Jackson, Lee, Menifee, Montgomery, Powell and 1 more	51 min
Apr 4, 4:55 PM EDT	Severe Thunderstorm Warning	JKL	Clay, Jackson, Laurel, Owsley, Pulaski, Rockcastle	35 min
Apr 4, 4:58 PM EDT	Tornado Warning	JKL	Clay, Knox, Laurel, Pulaski, Rockcastle	47 min
Apr 4, 5:03 PM EDT	Severe Thunderstorm Warning	JKL	Elliott, Menifee, Morgan, Rowan, Wolfe	27 min
Apr 4, 5:14 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Estill, Jackson, Lee, Owsley	46 min
Apr 4, 5:22 PM EDT	Severe Thunderstorm Warning	JKL	Bell, Clay, Harlan, Knox, Leslie, Letcher and 1 more	53 min
Apr 4, 5:32 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Clay, Knott, Leslie, Owsley, Perry	43 min
Apr 4, 5:40 PM EDT	Severe Thunderstorm Warning	JKL	Johnson, Magoffin, Martin, Morgan, Wolfe	50 min
Apr 4, 5:46 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Floyd, Johnson, Knott, Magoffin, Martin and 2 more	59 min
Apr 4, 5:48 PM EDT	Severe Thunderstorm Warning	JKL	Floyd, Harlan, Knott, Letcher, Perry, Pike	42 min
Apr 4, 6:08 PM EDT	Tornado Warning	JKL	Floyd, Knott, Pike	52 min
Apr 4, 6:09 PM EDT	Areal Flood Advisory	JKL	Floyd, Johnson, Martin	2 hr
Apr 4, 6:14 PM EDT	Areal Flood Advisory	JKL	Pulaski, Rockcastle	119 min
Apr 4, 6:16 PM EDT	Tornado Warning	JKL	Floyd, Knott, Martin, Pike	44 min
Apr 4, 6:39 PM EDT	Areal Flood Advisory	JKL	Bath, Estill, Fleming, Menifee, Montgomery, Powell and 1 more	94 min
Apr 4, 6:39 PM EDT	Tornado Warning	JKL	Pike	36 min
Apr 4, 6:52 PM EDT	Flash Flood Warning	JKL	Pulaski	82 min

Nearby

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