Alert archive / Illinois / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 84, NWS Lincoln, IL

July 16, 1992Clark County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 16, 1992, 4:31 PM CDT for Clark County, Illinois. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
Jul 16, 1992, 4:31 PM CDT (21:31 UTC)
Expired
Jul 16, 1992, 5:15 PM CDT
In force
44 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Clark County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 9.5 hours before the alert went out and 264 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 1992-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1992-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSPI 162131
SVRSPI
ILC023-162215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SPRINGFIELD IL
431 PM CDT THU JUL 16 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 515 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE EAST CENTRAL PART OF ILLINOIS
      CLARK

AT 4 15 PM CDT...70 MPH WINDS WERE RECORDED IN CASEY ILLINOIS WHICH
IS ABOUT 35 MILES SOUTHWEST OF TERRE HAUTE INDIANA.

RADAR SHOWS A STRONG THUNDERSTORM BETWEEN MARTINSVILLE AND WEST
UNION IN CENTRAL CLARK COUNTY.  THE THUNDERSTORM IS MOVING
NORTHEAST AT 30 MPH.

MARTINSVILLE...MARSHALL AND WEST UNION ARE IN OR NEAR THE PATH OF
THIS STORM.

IFL YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN AND DANGEROUS LIGHTNING.

 ATTN ISP DIST...12
 PALMER

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 16, 5:17 PM CDTTornado WarningILXCumberland, Shelby28 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.