Alert archive / Kentucky / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 13, NWS Louisville, KY

February 21, 1997Butler County, Logan County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Feb 21, 1997, 7:14 AM CST for Butler County, Logan County, Kentucky. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 21, 1997, 7:14 AM CST (13:14 UTC)
Expired
Feb 21, 1997, 7:45 AM CST
In force
31 min
Issued by
NWS Louisville, KY
Area
Whole counties

Counties Butler County, KY, Logan County, KY

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 1.2 hours before the alert went out and 102 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 1997-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 133 joules per kilogram.LCLLFCEL10008507005003002001001 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, Nashville Metro, TN at 12:00Z on 1997-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 392 square meters per square second.1939587897117Sfc1 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
133 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
825 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
392 m²/s²
0-3 km storm-relative helicity
598 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSDF 211315 RRA
SVRSDF
KYC183-031-141-211345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
814 AM EST (714 AM CST) FRI FEB 21 1997
 
THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  845 AM EST (745 AM CST)
FOR PERSONS IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST KENTUCKY
 
   ...OHIO COUNTY
 
IN SOUTH CENTRAL KENTUCKY
 
   ...BUTLER COUNTY...LOGAN COUNTY
 
AT 710 AM CST...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS EXTENDING
FROM HARDFORD...OR 35 MILES NORTHWEST OF BOWLING GREEN SOUTH TO JUST
WEST OF RUSSELLVILLE...OR 30 MILES WEST OF BOWLING GREEN. THIS LINE OF
STORMS WAS MOVING NORTHEAST AT 50 MPH AND WILL REACH MORGANTOWN AND
BOWLING GREEN BY 730 AM CST.
 
WHEN THUNDERSTORMS OCCUR...MOVE INSIDE A STRONG BUILDING.  GO TO
THE INTERIOR SECTION...OR PREFERABLY A BASEMENT OR LOWEST LEVEL
IF POSSIBLE.  DO NOT STAND NEAR WINDOWS. DO NOZT USE TELEPHONES
OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED. STAY AWAY FROM
ALL DOWNED WIRES.
 
COX

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 21, 7:14 AM CSTSevere Thunderstorm WarningLMKOhio31 min
Feb 21, 7:22 AM CSTSevere Thunderstorm WarningLMKBreckinridge, Hancock38 min
Feb 21, 9:55 AM CSTSevere Thunderstorm WarningLMKBoyle, Lincoln35 min
Feb 21, 10:00 AM CSTSevere Thunderstorm WarningLMKGarrard30 min
Feb 21, 10:10 AM CSTSevere Thunderstorm WarningLMKJessamine, Madison35 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1997Every severe thunderstorm warning in 1997

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.