Alert archive / Illinois / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 39, NWS Paducah, KY

September 9, 1992Johnson County, Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Sep 9, 1992, 11:50 PM CDT for Johnson County, Illinois. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Sep 9, 1992, 11:50 PM CDT (04:50 UTC)
Expired
Sep 10, 1992, 12:45 AM CDT
In force
55 min
Issued by
NWS Paducah, KY
Area
Whole counties

County Johnson County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 4.8 hours before the alert went out and 46 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 00:00Z on 1992-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2032 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 00:00Z on 1992-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
2032 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1281 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.7

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 Paducah, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 9, 9:43 PM CDTSevere Thunderstorm WarningPAHFranklin, Jackson62 min
Sep 9, 10:54 PM CDTSevere Thunderstorm WarningPAHJackson, Williamson66 min
Sep 9, 11:07 PM CDTSevere Thunderstorm WarningPAHSaline68 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1992Every severe thunderstorm warning in 1992

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.