Alert archive / Illinois / Tornado Warnings in 1992

Tornado Warning 8, NWS St. Louis, MO

July 12, 1992Adams County, Illinois; Lewis County, Missouri

NWS St. Louis, MO issued this tornado warning at Jul 12, 1992, 9:55 PM CDT for Adams County, Illinois; Lewis County, Missouri. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
Jul 12, 1992, 9:55 PM CDT (02:55 UTC)
Expired
Jul 12, 1992, 10:45 PM CDT
In force
50 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Adams County, IL, Lewis County, MO

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.9 hours before the alert went out and 377 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, Topeka, KS at 00:00Z on 1992-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3062 joules per kilogram.LCLEL10008507005003002001001 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, Topeka, KS at 00:00Z on 1992-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 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
3062 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1266 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 130256
TORSTL
ILC001-MOC111-130345-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
955 PM CDT SUN JUL 12 1992
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL ILLINOIS
 
   ...NORTHWEST ADAMS COUNTY
 
 
IN NORTHEAST MISSOURI
 
   ...EASTERN LEWIS COUNTY
 
AT 955 PM CDT...A FUNNEL CLOUD WAS REPORTED SOUTHWEST OF CANTON IN
EASTERN LEWIS COUNTY MISSOURI...ABOUT 15 MILES NORTHWEST OF QUINCY
ILLINOIS. THE STORM WAS MOVING EAST AT 30 MPH. IT WILL BE AFFECTING THE
CITIES OF CANTON...LAGRANGE AND URSA.
 
 
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 WINrDOWS.
 
FERRY/TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 8:22 PM CDTSevere Thunderstorm WarningLSXAdair, Knox53 min

Nearby

Tornado Warnings in Illinois, 1992Tornado Warnings in Missouri, 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; the sounding from the Mesonet's radiosonde archive.