Alert archive / Kentucky / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 21, NWS Wilmington, OH

April 23, 1991Boone County, Kenton County, Kentucky; Hamilton County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Apr 23, 1991, 9:03 PM EDT for Boone County, Kenton County, Kentucky; Hamilton County, Ohio. It was in force for 27 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 23, 1991, 9:03 PM EDT (01:03 UTC)
Expired
Apr 23, 1991, 9:30 PM EDT
In force
27 min
Issued by
NWS Wilmington, OH
Area
Whole counties

Counties Boone County, KY, Kenton County, KY, Hamilton County, OH

What was reported inside it

TimeReportWhereRemark
Apr 23, 9:20 PM EDTThunderstorm Wind 0Hamilton, OH

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 1.1 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, Dayton/James M C, OH at 00:00Z on 1991-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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, Dayton/James M C, OH at 00:00Z on 1991-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 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
2 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
984 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
196 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 KCVG 240103
SVRCVG
KYC015-117-OHC061-240130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CINCINNATI OH
903 PM EDT TUE APR 23 1991
 
THE NATIONAL WEATHER SERVICE IN CINCINNATI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  930 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTH KENTUCKY
          ...BOONE...KENTON
IN SOUTHWEST OHIO
          ...HAMILTON
 
AT 900 PM EDT STORNG WINDS WERE OCCURRING IN SOUTHWEST OHIO AND
NORTHERN KENTUCKY. WINDS GUSTED TO 52 MILES AN HOUR AT THE GREATER
CINCINNATI AIRPORT AT 858 PM. NATIONAL WEATHER SERVICE RADAR SHOWED A
LINE OF POSSIBLE SEVERE THUNDERSTORMS FROM HAMILTON COUNTY OF
SOUTHWEST OHIO TO BOONE COUNTY KENTUCKY.
 
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 F{LOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
JN

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Apr 23, 8:12 PM EDT, 51 minutes before
OHZ005-010-240140-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTON OH
812 PM EDT TUE APR 23 1991

AT 810 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF SHOWERS
AND THUNDERSTORMS OVER INDIANA BETWEEN MUNCIE AND LOUISVILLE.

THE LINE OF SHOWERS AND THUNDERSTORMS WERE PART OF A 25 TO 35 MILE
WIDE AREA THAT EXTENDED FROM WESTERN VAN WERT COUNTY TO SOUTHWEST OF
LOUISVILLE.

THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 35 TO 40 MPH AND
SHOULD MOVE TO NEAR A KENTON DAYTON LINE BY 900 PM EDT.

BRIEF HEAVY RAIN...WIND GUSTS TO NEAR 50 MPH...AND PEA SIZE HAIL HAD
BEEN REPORTED WITH SOME OF THESE STORMS AS THEY MOVED ACROSS INDIANA.

PEOPLE LIVING IN THE PATH OF THESE STORMS SHOULD BE PREPARED TO SEEK
SHELTER IF THREATENING WEATHER APPROACHES.

TORRENCE

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 9:17 PM EDTSevere Thunderstorm WarningILNCampbell43 min
Apr 23, 9:42 PM EDTSevere Thunderstorm WarningILNClinton48 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 1991Severe Thunderstorm Warnings in Ohio, 1991Every severe thunderstorm warning in 1991

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.