Alert archive / Kentucky / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 36, NWS Louisville, KY

June 30, 1990Oldham County, Trimble County, Kentucky; Clark County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at Jun 30, 1990, 3:12 PM EDT for Oldham County, Trimble County, Kentucky; Clark County, Indiana. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Jun 30, 1990, 3:12 PM EDT (19:12 UTC)
Expired
Jun 30, 1990, 4:00 PM EDT
In force
48 min
Issued by
NWS Louisville, KY
Area
Whole counties

Counties Clark County, IN, Oldham County, KY, Trimble County, KY

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 12:00Z, 7.2 hours before the alert went out and 192 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 12:00Z on 1990-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1097 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 12:00Z on 1990-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.193958Sfc1 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
1097 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1020 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.1

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.

Nearby

Severe Thunderstorm Warnings in Kentucky, 1990Severe Thunderstorm Warnings in Indiana, 1990Every severe thunderstorm warning in 1990

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.