Alert archive / Illinois / Tornado Warnings in 1990

Tornado Warning 6, NWS St. Louis, MO

November 27, 1990Jersey County, Illinois

NWS St. Louis, MO issued this tornado warning at Nov 27, 1990, 3:38 PM CST for Jersey County, Illinois. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Nov 27, 1990, 3:38 PM CST (21:38 UTC)
Expired
Nov 27, 1990, 4:15 PM CST
In force
37 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Jersey County, IL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 9.6 hours before the alert went out and 267 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 1990-11-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 189 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Paducah/Barkley, KY at 12:00Z on 1990-11-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 271 square meters per square second.1939587897Sfc1 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
189 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
725 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
271 m²/s²
0-3 km storm-relative helicity
280 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 272138
TORSTL
ILC083-272215-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
338 PM CST TUE NOV 27 1990
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  415 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN SOUTHWEST ILLINOIS
 
   ...JERSEY COUNTY
 
AT 320 PM...A TORNADO WAS REPORTED IN PIERRE MARQUETE STATE PARK...
30 MILES NORTH OF ST. LOUIS. MOVEMENT WAS NORTHEAST AT 45 TO 50 MPH.
 
THIS STORM SHOULD MOVE INTO THE JERSEYVILLE AREA BY 345 PM. IF YOU ARE
IN THIS AREA TAKE COVER.
 
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.
 
GOETSCH

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 26, 8:47 PM CSTSevere Thunderstorm WarningLSXClinton, Washington43 min
Nov 26, 8:47 PM CSTSevere Thunderstorm WarningLSXPerry43 min
Nov 27, 12:47 PM CSTSevere Thunderstorm WarningLSXPike43 min
Nov 27, 1:17 PM CSTSevere Thunderstorm WarningLSXAdams, Brown28 min
Nov 27, 3:02 PM CSTSevere Thunderstorm WarningLSXCalhoun, Jersey43 min
Nov 27, 3:23 PM CSTSevere Thunderstorm WarningLSXMadison67 min

Nearby

Tornado Warnings in Illinois, 1990Every tornado warning in 1990Tornadoes in 1990

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.