Alert archive / Kentucky / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 21, NWS Jackson, KY

February 18, 20094 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Feb 18, 2009, 2:49 PM EST for 4 counties in Kentucky. It was in force for 41 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
Feb 18, 2009, 2:49 PM EST (19:49 UTC)
Expired
Feb 18, 2009, 3:30 PM EST
In force
41 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon

Counties Bell County, KY, Harlan County, KY, Knox County, KY, Whitley County, KY

The radar

The Knoxville radar (KMRX), 73 km from the middle of the area, began a volume at 19:51 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
Feb 18, 3:05 PM ESTHAIL 0.88Ferndale, KYWINDS WERE ESTIMATED AT 40-50 MPH, HOWEVER NO DAMAGE WAS SEEN.
Feb 18, 3:10 PM ESTHAIL 0.88Pineville, KYHAIL REPORTED ON RTE 190 ALONG CLEAR CREEK AT HARMONY.

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
Feb 18, 12:09 PM ESTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.8 hours before the alert went out and 275 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 12:00Z on 2009-02-18Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2009-02-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 599 square meters per square second.1939587897117136156Sfc1 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
519 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
599 m²/s²
0-3 km storm-relative helicity
631 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.

000 
WUUS53 KJKL 181949
SVRJKL
KYC013-095-121-235-182030-
/O.NEW.KJKL.SV.W.0021.090218T1949Z-090218T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON KY
249 PM EST WED FEB 18 2009

THE NATIONAL WEATHER SERVICE IN JACKSON KY
HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL WHITLEY COUNTY IN SOUTH CENTRAL KENTUCKY...
  CENTRAL BELL COUNTY IN SOUTHEAST KENTUCKY...
  SOUTHWESTERN HARLAN COUNTY IN SOUTHEAST KENTUCKY...
  SOUTHERN KNOX COUNTY IN SOUTHEAST KENTUCKY...

* UNTIL 330 PM EST

* AT 246 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  LOUDEN...OR 9 MILES EAST OF WILLIAMSBURG...AND MOVING EAST AT 50
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SWANPOND AND HUBBS BY 255 PM EST...
  TROSPER...WARREN...MYRICK AND KAYJAY BY 300 PM EST...
  WALLSEND...FOURMILE...FLAT LICK AND CLEAR CREEK SPRINGS BY 305 PM
  EST...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM EST WEDNESDAY EVENING
FOR SOUTHEASTERN KENTUCKY.

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 3689 8347 3678 8328 3668 8350 3671 8407
      3683 8407
TIME...MOT...LOC 1949Z 269DEG 42KT 3678 8397

$$

RAY
2 follow-up statements
000 
WWUS53 KJKL 182016
SVSJKL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
316 PM EST WED FEB 18 2009

KYC013-095-121-235-182030-
/O.CON.KJKL.SV.W.0021.000000T0000Z-090218T2030Z/
KNOX KY-HARLAN KY-WHITLEY KY-BELL KY-
316 PM EST WED FEB 18 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EST
FOR NORTHERN BELL...EAST CENTRAL WHITLEY...SOUTHWESTERN HARLAN AND
SOUTHERN KNOX COUNTIES...

AT 315 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.
THIS STORM WAS LOCATED NEAR BALKAN...OR 8 MILES EAST OF 
PINEVILLE...MOVING EAST AT 55 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LIGGETT...BARDO...ALVA AND CREECH BY 325 PM EST...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM EST WEDNESDAY EVENING
FOR EASTERN KENTUCKY.

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 3689 8347 3678 8328 3668 8350 3671 8407
      3683 8407
TIME...MOT...LOC 2016Z 274DEG 48KT 3676 8353

$$

SBH
000 
WWUS53 KJKL 182028
SVSJKL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON KY
328 PM EST WED FEB 18 2009

KYC013-095-121-235-182038-
/O.EXP.KJKL.SV.W.0021.000000T0000Z-090218T2030Z/
KNOX KY-HARLAN KY-WHITLEY KY-BELL KY-
328 PM EST WED FEB 18 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BELL...EAST CENTRAL
WHITLEY...SOUTHWESTERN HARLAN AND SOUTHERN KNOX COUNTIES WILL EXPIRE
AT 330 PM EST...

THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE 
LIMITS. HOWEVER...THE STORMS REMAIN STRONG ENOUGH TO PRODUCE SMALL 
HAIL AND GUSTY WINDS TO 40 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM EST WEDNESDAY EVENING
FOR EASTERN KENTUCKY.

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

LAT...LON 3689 8347 3678 8328 3668 8350 3671 8407
      3683 8407
TIME...MOT...LOC 2028Z 274DEG 48KT 3675 8333

$$

SBH

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 18, 1:07 PM ESTTornado WarningJKLMcCreary, Pulaski, Wayne38 min
Feb 18, 1:43 PM ESTSevere Thunderstorm WarningJKLMcCreary, Pulaski, Wayne47 min
Feb 18, 1:47 PM ESTSevere Thunderstorm WarningJKLKnox, Laurel, McCreary, Pulaski, Whitley43 min
Feb 18, 2:13 PM ESTSevere Thunderstorm WarningJKLMcCreary, Wayne47 min
Feb 18, 2:14 PM ESTSevere Thunderstorm WarningJKLBath, Estill, Menifee, Montgomery, Morgan, Powell and 1 more18 min
Feb 18, 2:17 PM ESTSevere Thunderstorm WarningJKLEstill, Menifee, Montgomery, Morgan, Powell, Wolfe43 min
Feb 18, 2:24 PM ESTSevere Thunderstorm WarningJKLBell, Clay, Knox36 min
Feb 18, 2:26 PM ESTSevere Thunderstorm WarningJKLBath, Elliott, Johnson, Menifee, Morgan, Powell and 1 more49 min
Feb 18, 2:30 PM ESTSevere Thunderstorm WarningJKLKnox, McCreary, Whitley30 min
Feb 18, 2:48 PM ESTSevere Thunderstorm WarningJKLBell, Harlan, Leslie42 min
Feb 18, 2:54 PM ESTSevere Thunderstorm WarningJKLBell, Knox, McCreary, Whitley51 min
Feb 18, 2:55 PM ESTSevere Thunderstorm WarningJKLBreathitt, Estill, Lee, Magoffin, Menifee, Morgan and 2 more50 min
Feb 18, 2:57 PM ESTSevere Thunderstorm WarningJKLFloyd, Johnson, Magoffin, Martin, Menifee, Morgan and 2 more48 min
Feb 18, 3:00 PM ESTTornado WarningJKLHarlan30 min
Feb 18, 3:13 PM ESTSevere Thunderstorm WarningJKLJohnson, Magoffin, Morgan32 min
Feb 18, 3:14 PM ESTTornado WarningJKLBell, Harlan31 min
Feb 18, 3:31 PM ESTSevere Thunderstorm WarningJKLJohnson, Martin29 min
Feb 18, 3:42 PM ESTSevere Thunderstorm WarningJKLBreathitt, Floyd, Johnson, Magoffin, Martin, Morgan and 2 more48 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2009Every severe thunderstorm warning in 2009

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.