Alert archive / Missouri / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 99, NWS St. Louis, MO

August 8, 1992Madison County, Saint Francois County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Aug 8, 1992, 5:17 PM CDT for Madison County, Saint Francois County, Missouri. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Aug 8, 1992, 5:17 PM CDT (22:17 UTC)
Expired
Aug 8, 1992, 5:45 PM CDT
In force
28 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Madison County, MO, Saint Francois County, MO

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.3 hours before the alert went out and 164 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 1992-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3538 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 12:00Z on 1992-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
3538 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
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 082217
SVRSTL
MOC187-123-082245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
517 PM CDT SAT AUG 8 1992
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL MISSOURI
 
   ...SOUTHEASTERN ST FRANCOIS COUNTY
 
IN SOUTHEAST MISSOURI
 
   ...NORTHEASTERN MADISON COUNTY
 
AT 515 PM...WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM ALONG
THE ST FRANCOIS...MADISON COUNTY LINE...SOME 60 MILES SOUTH OF ST LOUIS.
 
THE STORM WAS MOVING EAST AT 10 MILES AN HOUR...AND WILL BE AFFECTING
THE TOWNS OF MINE LA MOTTE AND WOMACK.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 5:46 PM CDTSevere Thunderstorm WarningLSXMadison29 min
Aug 8, 6:15 PM CDTSevere Thunderstorm WarningLSXMadison45 min
Aug 8, 6:27 PM CDTFlash Flood WarningLSXMadison3 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 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.