Alert archive / Kentucky / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 17, NWS Louisville, KY

February 21, 1997Boyle County, Lincoln County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Feb 21, 1997, 10:55 AM EST for Boyle County, Lincoln County, Kentucky. It was in force for 35 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, 10:55 AM EST (15:55 UTC)
Expired: Feb 21, 1997, 11:30 AM EST
In force: 35 min
Issued by: NWS Louisville, KY
Area: Whole counties

Counties Boyle County, KY, Lincoln County, KY

The radar

The Louisville radar (KLVX), 114 km from the middle of the area, began a volume at 15:55 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 21, 8:30 AM EST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 3.9 hours before the alert went out and 226 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: 1012 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 306 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 
TTAA00 KSDF 211555 RRA
SVRSDF
KYC021-137-211630-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
1055 AM EST FRI FEB 21 1997
 
THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 AM EST
FOR PERSONS IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL KENTUCKY
 
   ...EASTERN BOYLE COUNTY
 
IN SOUTH CENTRAL KENTUCKY
 
   ...LINCOLN COUNTY
 
AT 1050 AM EST...WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS FROM NEEDMORE IN CENTRAL BOYLE COUNTY TO MCKINNEY
IN EXTREME WESTERN LINCOLN COUNTY. THESE STORMS ARE LOCATED ABOUT 30
MILES NORTH OF SOMERSET. THE STORMS ARE MOVING EAST AT 50 MPH AND WILL
REACH DANVILLE AND STANFORD BETWEEN 1110 AND 1120 AM.
 
DAMAGING WINDS CAN BE EXPECTED WITH THESE STORMS.
 
THESE ARE DANGEROUS STORMS.  IF YOU ARE IN ITS PATH...MOVE TO
SHELTER...PREFERABLY INSIDE A STRONG BUILDING.  ONCE INSIDE...
STAY 2AWAY FROM WINDOWS. DO NOT GO NEAR DOWNED POWER LINES.
 
FUNK/COX

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 21, 8:14 AM EST	Severe Thunderstorm Warning	LMK	Butler, Logan	31 min
Feb 21, 8:14 AM EST	Severe Thunderstorm Warning	LMK	Ohio	31 min
Feb 21, 8:22 AM EST	Severe Thunderstorm Warning	LMK	Breckinridge, Hancock	38 min
Feb 21, 11:00 AM EST	Severe Thunderstorm Warning	LMK	Garrard	30 min
Feb 21, 11:10 AM EST	Severe Thunderstorm Warning	LMK	Jessamine, Madison	35 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1997 Every 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; radar from the NEXRAD Level II archive.