Alert archive / Illinois / Tornado Warnings in 1992

Tornado Warning 7, NWS St. Louis, MO

July 9, 1992Brown County, Illinois

NWS St. Louis, MO issued this tornado warning at Jul 9, 1992, 5:27 PM CDT for Brown County, Illinois. It was in force for 33 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 9, 1992, 5:27 PM CDT (22:27 UTC)
Expired: Jul 9, 1992, 6:00 PM CDT
In force: 33 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Brown County, IL

What was reported inside it

Time	Report	Where	Remark
Jul 9, 5:30 PM CDT	Hail 1.75	Brown, 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 12:00Z, 10.5 hours before the alert went out and 368 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1224 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 808 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 100 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 092228
TORSTL
ILC009-092300-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
527 PM CDT THU JUL 9 1992
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  600 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL ILLINOIS
 
   ...BROWN COUNTY
 
AT 525 PM...WEATHER SERVICE DOPPLER RADAR INDICATED A POSSIBLE TORNADO
NEAR BUCKHORN...ABOUT 30 MILES EAST OF QUINCY.
 
A SECOND POSSIBLE TORNADO WAS ALSO INDICATED NEAR VERSAILLES...WHICH IS
ABOUT 35 MILES EAST OF QUINCY.
 
THESE STORMS WERE MOVING EAST AT 35 MILES AN HOUR.
 
THE CITIES OF VERSAILLES AND LAGRANGE ARE IN THE PATHS OF THESE STORMS.
 
 
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.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 10:22 AM CDT	Severe Thunderstorm Warning	LSX	Brown	53 min
Jul 9, 10:22 AM CDT	Severe Thunderstorm Warning	LSX	Adams	30 min
Jul 9, 5:10 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown	50 min

Nearby

Tornado Warnings in Illinois, 1992 Every tornado warning in 1992 Tornadoes 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.