Alert archive / Kentucky / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 21, NWS Louisville, KY

February 11, 2009Oldham County, Shelby County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Feb 11, 2009, 2:18 PM EST for Oldham County, Shelby County, Kentucky. It was in force for 42 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: Feb 11, 2009, 2:18 PM EST (19:18 UTC)
Expired: Feb 11, 2009, 3:00 PM EST
In force: 42 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon

Counties Oldham County, KY, Shelby County, KY

The radar

The Louisville radar (KLVX), 66 km from the middle of the area, began a volume at 19:18 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
Feb 11, 11:38 AM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.3 hours before the alert went out and 180 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 468 m²/s²
0-3 km storm-relative helicity: 468 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 KLMK 111918
SVRLMK
KYC185-211-112000-
/O.NEW.KLMK.SV.W.0021.090211T1918Z-090211T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
218 PM EST WED FEB 11 2009

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OLDHAM COUNTY IN NORTH CENTRAL KENTUCKY...
  SHELBY COUNTY IN NORTH CENTRAL KENTUCKY...

* UNTIL 300 PM EST...

* AT 214 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES SOUTHWEST OF LA
  GRANGE..AND MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  8 MILES NORTH OF SHELBYVILLE BY 225 PM EST...

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

LAT...LON 3850 8534 3847 8536 3840 8534 3836 8530
      3833 8498 3805 8510 3815 8543 3827 8542
      3829 8546 3838 8564 3844 8561 3847 8551
      3853 8543
TIME...MOT...LOC 1919Z 256DEG 42KT 3831 8539

$$

MJ

2 follow-up statements

000 
WWUS53 KLMK 111930
SVSLMK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
230 PM EST WED FEB 11 2009

KYC185-211-112000-
/O.CON.KLMK.SV.W.0021.000000T0000Z-090211T2000Z/
OLDHAM KY-SHELBY KY-
230 PM EST WED FEB 11 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EST
FOR SHELBY AND EASTERN OLDHAM COUNTIES...

AT 228 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR CHESTNUT GROVE...OR
ABOUT 8 MILES SOUTHEAST OF LA GRANGE...MOVING EAST AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  CROPPER BY 235 PM EST...
  7 MILES NORTH OF BAGDAD BY 240 PM EST...

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

LAT...LON 3850 8534 3846 8536 3840 8534 3836 8530
      3833 8498 3805 8510 3814 8537 3827 8536
      3839 8544 3853 8543
TIME...MOT...LOC 1930Z 256DEG 42KT 3834 8523

$$

LS

000 
WWUS53 KLMK 111953
SVSLMK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
253 PM EST WED FEB 11 2009

KYC185-211-112003-
/O.EXP.KLMK.SV.W.0021.000000T0000Z-090211T2000Z/
OLDHAM KY-SHELBY KY-
253 PM EST WED FEB 11 2009

...THE SEVERE THUNDERSTORM WARNING FOR SHELBY AND EASTERN OLDHAM
COUNTIES EXPIRES AT 300 PM EST...

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

LAT...LON 3850 8534 3846 8536 3840 8534 3836 8530
      3833 8498 3805 8510 3814 8537 3827 8536
      3839 8544 3853 8543
TIME...MOT...LOC 1953Z 256DEG 42KT 3840 8490

$$

LS

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 11, 12:16 PM EST	Severe Thunderstorm Warning	LMK	Butler, Logan, Ohio	44 min
Feb 11, 12:40 PM EST	Severe Thunderstorm Warning	LMK	Simpson, Warren	35 min
Feb 11, 12:48 PM EST	Severe Thunderstorm Warning	LMK	Hancock	27 min
Feb 11, 1:13 PM EST	Severe Thunderstorm Warning	LMK	Allen, Barren, Edmonson, Warren	32 min
Feb 11, 1:17 PM EST	Severe Thunderstorm Warning	LMK	Breckinridge, Grayson, Hardin	43 min
Feb 11, 1:31 PM EST	Severe Thunderstorm Warning	LMK	Meade	44 min
Feb 11, 1:34 PM EST	Severe Thunderstorm Warning	LMK	Barren, Hart	26 min
Feb 11, 1:45 PM EST	Severe Thunderstorm Warning	LMK	Hardin	30 min
Feb 11, 1:55 PM EST	Severe Thunderstorm Warning	LMK	Green, Hart, Larue, Metcalfe	35 min
Feb 11, 1:57 PM EST	Severe Thunderstorm Warning	LMK	Hardin, Larue	33 min
Feb 11, 2:00 PM EST	Severe Thunderstorm Warning	LMK	Bullitt	30 min
Feb 11, 2:06 PM EST	Severe Thunderstorm Warning	LMK	Jefferson	24 min
Feb 11, 2:06 PM EST	Severe Thunderstorm Warning	LMK	Green, Larue, Marion, Taylor	39 min
Feb 11, 2:08 PM EST	Severe Thunderstorm Warning	LMK	Nelson	37 min
Feb 11, 2:08 PM EST	Severe Thunderstorm Warning	LMK	Cumberland, Metcalfe, Monroe	37 min
Feb 11, 2:12 PM EST	Severe Thunderstorm Warning	LMK	Adair, Metcalfe, Russell	33 min
Feb 11, 2:12 PM EST	Severe Thunderstorm Warning	LMK	Bullitt, Nelson, Spencer	33 min
Feb 11, 2:32 PM EST	Severe Thunderstorm Warning	LMK	Boyle, Casey, Marion, Taylor	28 min
Feb 11, 2:34 PM EST	Severe Thunderstorm Warning	LMK	Henry	41 min
Feb 11, 2:38 PM EST	Severe Thunderstorm Warning	LMK	Clinton, Russell	37 min
Feb 11, 2:44 PM EST	Severe Thunderstorm Warning	LMK	Anderson	31 min
Feb 11, 2:46 PM EST	Severe Thunderstorm Warning	LMK	Adair, Casey, Russell	29 min
Feb 11, 2:50 PM EST	Severe Thunderstorm Warning	LMK	Boyle, Mercer, Woodford	25 min
Feb 11, 2:54 PM EST	Tornado Warning	LMK	Casey	20 min
Feb 11, 2:56 PM EST	Severe Thunderstorm Warning	LMK	Boyle, Casey, Lincoln	34 min
Feb 11, 2:59 PM EST	Severe Thunderstorm Warning	LMK	Anderson, Franklin, Scott, Woodford	31 min
Feb 11, 2:59 PM EST	Severe Thunderstorm Warning	LMK	Fayette, Jessamine	46 min
Feb 11, 3:02 PM EST	Tornado Warning	LMK	Lincoln	28 min
Feb 11, 3:09 PM EST	Severe Thunderstorm Warning	LMK	Boyle, Fayette, Garrard, Jessamine, Lincoln, Madison	36 min
Feb 11, 3:11 PM EST	Severe Thunderstorm Warning	LMK	Casey, Lincoln	34 min
Feb 11, 3:16 PM EST	Tornado Warning	LMK	Garrard, Madison	18 min
Feb 11, 3:18 PM EST	Tornado Warning	LMK	Lincoln	27 min
Feb 11, 3:31 PM EST	Severe Thunderstorm Warning	LMK	Clark, Madison	29 min
Feb 11, 3:37 PM EST	Severe Thunderstorm Warning	LMK	Breckinridge, Meade	23 min
Feb 11, 4:40 PM EST	Severe Thunderstorm Warning	LMK	Shelby, Spencer	14 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2009 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.