Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 196, NWS Indianapolis, IN

July 7, 1993Clay County, Wayne County, Illinois

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 7, 1993, 4:36 PM CDT for Clay County, Wayne County, Illinois. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
Jul 7, 1993, 4:36 PM CDT (21:36 UTC)
Expired
Jul 7, 1993, 5:45 PM CDT
In force
69 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Clay County, IL, Wayne County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 9.6 hours before the alert went out and 171 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, Paducah/Barkley, KY at 12:00Z on 1993-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1291 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, Paducah/Barkley, KY at 12:00Z on 1993-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
1291 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
701 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 7, 6:00 PM CDTSevere Thunderstorm WarningINDSullivan, Vigo45 min
Jul 7, 6:15 PM CDTSevere Thunderstorm WarningINDClay, Greene45 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1993Every severe thunderstorm warning in 1993

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.