Alert archive / Illinois / Tornado Warnings in 1992

Tornado Warning 6, NWS St. Louis, MO

July 4, 1992Randolph County, Saint Clair County, Washington County, Illinois

NWS St. Louis, MO issued this tornado warning at Jul 4, 1992, 8:03 PM CDT for Randolph County, Saint Clair County, Washington County, Illinois. It was in force for 37 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 4, 1992, 8:03 PM CDT (01:03 UTC)
Expired
Jul 4, 1992, 8:40 PM CDT
In force
37 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Randolph County, IL, Saint Clair County, IL, Washington County, IL

What was reported inside it

TimeReportWhereRemark
Jul 4, 8:11 PM CDTTornado F1St. Clair, IL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 1.1 hours before the alert went out and 163 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 1992-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 742 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 1992-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 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
742 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
1248 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
188 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 050103
TORSTL
ILC189-157-163-050145-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
803 PM CDT SAT JUL 4 1992
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  845 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL ILLINOIS
 
   ...SOUTHWESTERN WASHINGTON COUNTY
 
IN SOUTHWEST ILLINOIS
 
   ...NORTHEASTERN RANDOLPH COUNTY...SOUTHERN ST CLAIR COUNTY
 
AT 8 PM...WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO OVER
SOUTHERN ST CLAIR COUNTY...ILLINOIS...ABOUT 30 MILES SOUTHEAST OF ST
LOUIS...NEAR NEW ATHENS.
 
THIS STORM WAS MOVING SOUTHEAST AT 5 TO 10 MPH.  THIS STORM WILL AFFECT
NEW ATHENS...MARISSA...TILDEN AND SPARTA.
 
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
TUCKER

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 4, 7:37 PM CDTTornado WarningLSXSaint Clair23 min
Jul 4, 8:10 PM CDTFlash Flood WarningLSXSaint Clair117 min

Nearby

Tornado Warnings in Illinois, 1992Every tornado warning in 1992Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.