Alert archive / Indiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 23, NWS Louisville, KY

April 8, 1998Orange County, Washington County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at Apr 8, 1998, 7:23 PM EST for Orange County, Washington County, Indiana. It was in force for 32 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 8, 1998, 7:23 PM EST (00:23 UTC)
Expired
Apr 8, 1998, 7:55 PM EST
In force
32 min
Issued by
NWS Louisville, KY
Area
Whole counties

Counties Orange County, IN, Washington County, IN

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.4 hours before the alert went out and 236 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 1998-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 149 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 1998-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939587897117136156Sfc1 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
149 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1572 m above ground
0-6 km bulk shear
85 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 8, 2:40 PM EST, 4 hours 43 minutes before
KYZ023>043-045>049-053>057-061>067-070>078-081-082-INZ076-079-083-
084-089>092-082300-

SPECIAL WEATHER STATMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
340 PM EDT TUE APR 7 1998

A TORNADO WATCH WILL CONTINUE UNTIL 700 PM EDT FOR COUNTIES ALONG
AND NORTH OF JEFFERSON COUNTY INDIANA...TRIMBLE...OLDHAM...HENRY...
FRANKLIN...WOODFORD...FAYETTE...CLARK...BOURBON...NICHOLAS...
MASON AND LEWIS COUNTIES. THIS WILL INCLUDE THE CITIES OF
LEXINGTON...FRANKLIN AND COVINGTON.

THE TORNADO WATCH HAS BEEN CANCELLED FOR THE REMAINDER OF CENTRAL
KENTUCKY AND SOUTH CENTRAL INDIANA...INCLUDING THE BOWLING GREEN...
LOUISVILLE AND CAMPBELLSVILLE AREAS.

DEWALD

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 8:53 PM ESTSevere Thunderstorm WarningLMKOhio32 min
Apr 8, 9:40 PM ESTSevere Thunderstorm WarningLMKLarue20 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1998Every severe thunderstorm warning in 1998

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.