Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 39, NWS Chicago, IL

June 24, 19934 counties in Illinois

NWS Chicago, IL issued this severe thunderstorm warning at Jun 24, 1993, 3:04 PM CDT for 4 counties in Illinois. It was in force for 41 min.

The area

The counties it named.

The facts

Issued
Jun 24, 1993, 3:04 PM CDT (20:04 UTC)
Expired
Jun 24, 1993, 3:45 PM CDT
In force
41 min
Issued by
NWS Chicago, IL
Area
Whole counties

Counties Ford County, IL, Grundy County, IL, Kankakee County, IL, Livingston County, IL

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.1 hours before the alert went out and 390 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, Green Bay/Straub, WI at 12:00Z on 1993-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 53 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, Green Bay/Straub, WI at 12:00Z on 1993-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 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
53 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
1167 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
67 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 Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 3:35 PM CDTTornado WarningLOTCook, Will25 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.