Alert archive / Kentucky / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 21, NWS Louisville, KY

April 5, 2003Henry County, Oldham County, Shelby County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Apr 5, 2003, 12:17 AM EST for Henry County, Oldham County, Shelby County, Kentucky. It was in force for 43 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 5, 2003, 12:17 AM EST (05:17 UTC)
Expired: Apr 5, 2003, 1:00 AM EST
In force: 43 min
Issued by: NWS Louisville, KY
Area: Counties, with a storm outline in the text

Counties Henry County, KY, Oldham County, KY, Shelby County, KY

The radar

The Louisville radar (KLVX), 66 km from the middle of the area, began a volume at 05:21 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, 10:20 PM EST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 5.3 hours before the alert went out and 182 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: 628 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1237 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

029 
WUUS53 KLMK 050517
SVRLMK
KYC103-185-211-050600-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
1217 AM EST SAT APR 5 2003

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

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

* UNTIL 100 AM EST

* AT 1216 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM BUCKNER TO 15 MILES SOUTH OF
  PEWEE VALLEY...OR FROM 20 MILES NORTHEAST OF LOUISVILLE TO 11 MILES
  SOUTHEAST OF LOUISVILLE...MOVING EAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SULPHUR...SLIGO...SMITHFIELD...SIMPSONVILLE AROUND 1225 AM EST
  CAMPBELLSBURG...NEW CASTLE...FINCHVILLE...EMINENCE AROUND 1230 AM
  EST
  SHELBYVILLE...PLEASUREVILLE AROUND 1235 AM EST

IF SEVERE WEATHER APPROACHES...GO INSIDE A STURDY SHELTER. STAY AWAY
FROM CREEKS...OTHER FLOOD-PRONE AREAS...AND ANY DOWNED POWER LINES.
REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE LARGE HAIL...DAMAGING
WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

A TORNADO WATCH IS ALSO IN EFFECT. REMEMBER...SEVERE THUNDERSTORMS
CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE NOTICE.

LAT...LON 3819 8503 3813 8535 3827 8540 3834 8553
          3846 8553 3850 8530

$$

SMALLCOMB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 10:46 PM EST	Severe Thunderstorm Warning	LMK	Hancock	29 min
Apr 4, 11:19 PM EST	Severe Thunderstorm Warning	LMK	Meade	41 min
Apr 4, 11:36 PM EST	Severe Thunderstorm Warning	LMK	Grayson, Ohio	39 min
Apr 4, 11:44 PM EST	Severe Thunderstorm Warning	LMK	Jefferson	46 min
Apr 4, 11:46 PM EST	Severe Thunderstorm Warning	LMK	Breckinridge	29 min
Apr 4, 11:52 PM EST	Severe Thunderstorm Warning	LMK	Bullitt, Hardin	53 min
Apr 5, 12:04 AM EST	Severe Thunderstorm Warning	LMK	Hardin	41 min
Apr 5, 12:26 AM EST	Severe Thunderstorm Warning	LMK	Larue	49 min
Apr 5, 12:30 AM EST	Severe Thunderstorm Warning	LMK	Logan	30 min
Apr 5, 1:03 AM EST	Severe Thunderstorm Warning	LMK	Logan	22 min
Apr 5, 1:40 AM EST	Severe Thunderstorm Warning	LMK	Garrard, Jessamine, Woodford	30 min
Apr 5, 2:38 AM EST	Severe Thunderstorm Warning	LMK	Clinton, Russell	37 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2003 Every severe thunderstorm warning in 2003

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.