Alert archive / Kentucky / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 7, NWS Charleston, WV

April 20, 1996Boyd County, Greenup County, Kentucky

NWS Charleston, WV issued this severe thunderstorm warning at Apr 20, 1996, 6:52 AM EDT for Boyd County, Greenup County, Kentucky. It was in force for 38 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
Apr 20, 1996, 6:52 AM EDT (10:52 UTC)
Expired
Apr 20, 1996, 7:30 AM EDT
In force
38 min
Issued by
NWS Charleston, WV
Area
Whole counties

Counties Boyd County, KY, Greenup County, KY

The radar

The Charleston,WV radar (KRLX), 96 km from the middle of the area, began a volume at 10:54 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 10.9 hours before the alert went out and 139 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, Cncnati-Daytn, OH at 00:00Z on 1996-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1144 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, Cncnati-Daytn, OH at 00:00Z on 1996-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 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
1144 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
991 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
276 m²/s²
Significant tornado parameter
1.1
Supercell composite
4.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCRW 201052
SVRCRW
KYC019-089-201130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON WV
652 AM EDT SAT APR 20 1996
 
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  730 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...S...
 
IN EAST KENTUCKY
 
   ...BOYD COUNTY...GREENUP COUNTY
 
AT 650 AM EDT A SEVERE THUNDERSTORM WAS DETECTED ON DOPPLER RADAR IN
CHARLESTON. THIS STORM WILL ENTER WESTERN PORTIONS OF BOYD AND GREEUP
COUNTIES BY 710 AM.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
BELK

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 20, 6:35 AM EDTSevere Thunderstorm WarningRLXElliott25 min
Apr 20, 6:45 AM EDTSevere Thunderstorm WarningRLXCarter30 min
Apr 20, 7:41 AM EDTSevere Thunderstorm WarningRLXMartin34 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1996Every severe thunderstorm warning in 1996

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.