Alert archive / Missouri / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 97, NWS St. Louis, MO

July 29, 1992Clark County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 29, 1992, 6:31 AM CDT for Clark County, Missouri. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
Jul 29, 1992, 6:31 AM CDT (11:31 UTC)
Expired
Jul 29, 1992, 7:15 AM CDT
In force
44 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Clark County, MO

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 11.5 hours before the alert went out and 369 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 1992-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2221 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, Topeka, KS at 00:00Z on 1992-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
2221 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1236 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 291134
SVRSTL
MOC045-291215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
631 AM CDT WED JUL 29 1992
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  715 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST MISSOURI
 
   ...CLARK COUNTY
 
AT 625 AM...NWS DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN EXTREME
NORTHEAST SCOTLAND COUNTY...ABOUT 40 MILES NORTHEAST OF KIRKSVILLE. THE
STORM WAS MOVING SOUTHEAST AT 35 MPH. THE STORM HAS PRODUCED HIGH WINDS
AND EXTREMELY HEAVY RAIN IN NORTHERN SCOTLAND COUNTY. THIS STORM WILL
PASS THROUGH LURAY WYANCONDA AND KAHOKA BETWEEN 640 AND 705 AM. WINDS TO
60 MPH...VERY HEAVY RAIN AND POSSIBLY LARGE HAIL CAN BE EXPECTED WITH
THIS STORM.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIAN0CES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
TUCKER

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 29, 4:03 AM CDT, 2 hours 28 minutes before
MOZ001>012-291500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
348 AM CDT WED JUL 29 1992

...THUNDERSTORMS ARE LIKELY MOVE INTO EXTREME NORTHER AND NORTHEAST
   MISSOURI THIS MORNING...

SATELLITE AND RADAR INDICATED A LINE OF THUNDERSTORMS IN SOUTH CENTRAL
IOWA.  THESE STORMS ARE EXPECTED TO MOVE EAST SOUTHEAST AND POSSIBLY
DEVELOP SLIGHTLY SOUTH.  IT APPEARS THAT SOME OF THE STORMS WILL JUST
REACH EXTREME NORTHERN MISSOURI AND EXTREME NORTHEAST MISSOURI THIS
MORNING.  THE COUNTIES MOST LIKELY AFFECTED WILL BE PUTNAM...SCHUYLER
SCOTLAND AND CLARK.

THUNDERSTORMS ARE EXPECTED TO DEVELOP AND MOVE ACROSS NORTHERN
MISSOURI LATE TODAY AND TONIGHT.  SOME OF THE STORMS WILL BE STRONG
AND POSSIBLY SEVERE.  PERSONS IN NORTH CENTRAL AND NORTHWEST MISSOURI
CAN EXPECT STORMS THAT WILL PRODUCE HEAVY RAIN AND POSSIBLY STRONG
WINDS LATE TODAY AND TONIGHT.  ALSO...SOME STRONG THUNDERSTORMS
ARE EXPECTED ON THURSDAY.

TUCKER
X

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 6:01 AM CDTSevere Thunderstorm WarningLSXScotland36 min

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.