Alert archive / Kentucky / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 21, NWS Louisville, KY

April 15, 1993Jefferson County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Apr 15, 1993, 5:32 PM EDT for Jefferson County, Kentucky. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Apr 15, 1993, 5:32 PM EDT (21:32 UTC)
Expired
Apr 15, 1993, 6:15 PM EDT
In force
43 min
Issued by
NWS Louisville, KY
Area
Whole counties

County Jefferson County, KY

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 12:00Z, 9.5 hours before the alert went out and 228 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, Dayton/James M C, OH at 12:00Z on 1993-04-15Temperature 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, Dayton/James M C, OH at 12:00Z on 1993-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 327 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
1876 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
327 m²/s²
0-3 km storm-relative helicity
369 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 
WUUS1 KSDF 152133 RRA
SVRSDF
KYC111-152215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
532 PM EDT THU APR 15 1993
 
THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL KENTUCKY
 
   ...JEFFERSON COUNTY
 
AT 5 30 PM EDT WEATHER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED
OVER CENTRAL BULLITT COUNTY...15 MILES SOUTH OF LOUISVILLE. LARGE HAIL
AND HIGH WINDS HAVE BEEN REPORTED WITH THIS STORM.
 
THIS STORMIS MOVING NORTH AT 45 MPH AND WILL MOVE INTO LOUISVILLE BY 6
PM.
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
 
 
AMMERMAN


E THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
 
 
AMMERMAN

Nearby

Severe Thunderstorm Warnings in Kentucky, 1993Every severe thunderstorm warning in 1993

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.