Alert archive / Missouri / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 132, NWS St. Louis, MO

July 6, 1997Shelby County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 6, 1997, 5:01 PM CDT for Shelby County, Missouri. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 6, 1997, 5:01 PM CDT (22:01 UTC)
Expired
Jul 6, 1997, 5:30 PM CDT
In force
29 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Shelby County, MO

The radar

The St Louis radar (KLSX), 171 km from the middle of the area, began a volume at 22:04 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.0 hours before the alert went out and 242 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, Davenport, at 12:00Z on 1997-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 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, Davenport, at 12:00Z on 1997-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
6 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
1119 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
1 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 062203 RRA
SVRSTL
MOC205-062230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
501 PM CDT SUN JUL 6 1997
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST MISSOURI
 
   ...SHELBY COUNTY
 
AT 500 PM...RADAR SHOWED A SEVERE THUNDERSTORM JUST SOUTHWEST OF
SHELBYVILLE...MOVING EAST SOUTHEAST AT 20 MPH.
 
THE TOWNS OF LENTNER...SHELBYVILLE...AND SHELBINA ARE IN THE PATH OF
THIS STORM.  HAIL UP TO ONE INCH IN DIAMETER IS THE MAIN SEVERE WEATHER
THREAT.
 
IF OUTDOORS...SEEK INSIDE SHELTER IMMEDIATELY. BOATERS ON AREA
LAKES SHOULD HEhAD FOR SHORE.
 
FG/ST

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 6, 11:13 AM CDT, 5 hours 48 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026-
027-034>036-041-042-047>052-059>065-072>075-084-085-099-070015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1113 AM CDT SUN JUL 6 1997

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER
SERVICE FORECAST OFFICE IN ST LOUIS.  AREAS INCLUDED ARE PARTS OF
CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST
ILLINOIS.

SCATTERED SHOWERS AND THUNDERSTORMS WILL THREATEN THE AREA THIS
AFTERNOON...GENERALLY ALONG AND NORTH OF A JEFFERSON CITY...
UNION...NASHVILLE ILLINOIS LINE.  HOWEVER...DUE TO THE LIMITED
MOISTURE...AND LACK OF UPPER LEVEL SUPPORT...NO SEVERE WEATHER IS
EXPECTED.

SKYWARN ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

TRUETT
Special weather statement, Jul 6, 11:17 AM CDT, 5 hours 44 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026-
027-034>036-041-042-047>052-059>065-072>075-084-085-099-070015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1113 AM CDT SUN JUL 6 1997

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER
SERVICE FORECAST OFFICE IN ST LOUIS.  AREAS INCLUDED ARE PARTS OF
CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST
ILLINOIS.

SCATTERED SHOWERS AND THUNDERSTORMS WILL THREATEN THE AREA THIS
AFTERNOON...GENERALLY ALONG AND NORTH OF A JEFFERSON CITY...
UNION...NASHVILLE ILLINOIS LINE.  HOWEVER...DUE TO THE LIMITED
MOISTURE...AND LACK OF UPPER LEVEL SUPPORT...NO SEVERE WEATHER IS
EXPECTED.

SKYWARN ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

TRUETT
Special weather statement, Jul 6, 2:29 PM CDT, 2 hours 32 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026-
027-034>036-041-042-047>052-059>065-072>075-084-085-099-070015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
230 PM CDT SUN JUL 6 1997

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER
SERVICE FORECAST OFFICE IN ST LOUIS.  AREAS INCLUDED ARE PARTS OF
CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST
ILLINOIS.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTHEAST MISSOURI
AND WEST CENTRAL ILLINOIS THE REST OF THIS AFTERNOON...GENERALLY
ALONG AND NORTH OF A PITTSFIELD ILLINOIS...PARIS MISSOURI LINE.

A STALLED FRONTAL BOUNDARY HAS CAUSED THUNDERSTORMS TO REDEVELOP ACROSS
NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS THIS AFTERNOON.  IT
NOW APPEARS THAT THERE MAY BE ENOUGH INSTABILITY THAT SOME OF THESE
STORMS WILL PRODUCE HAIL AND GUSTY WINDS.  SPOTTER ACTIVATION MAY
BECOME NECESSARY IN A FEW LOCATIONS.
*
OVER CENTRAL AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS...
ANY STORMS THAT REDEVELOP THIS AFTERNOON ARE EXPECTED TO REMAIN
BELOW SEVERE LIMITS.

TRUETT
Special weather statement, Jul 6, 2:30 PM CDT, 2 hours 31 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026-
027-034>036-041-042-047>052-059>065-072>075-084-085-099-070015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
230 PM CDT SUN JUL 6 1997

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER
SERVICE FORECAST OFFICE IN ST LOUIS.  AREAS INCLUDED ARE PARTS OF
CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST
ILLINOIS.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTHEAST MISSOURI
AND WEST CENTRAL ILLINOIS THE REST OF THIS AFTERNOON...GENERALLY
ALONG AND NORTH OF A PITTSFIELD ILLINOIS...PARIS MISSOURI LINE.

A STALLED FRONTAL BOUNDARY HAS CAUSED THUNDERSTORMS TO REDEVELOP ACROSS
NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS THIS AFTERNOON.  IT
NOW APPEARS THAT THERE MAY BE ENOUGH INSTABILITY THAT SOME OF THESE
STORMS WILL PRODUCE HAIL AND GUSTY WINDS.  SPOTTER ACTIVATION MAY
BECOME NECESSARY IN A FEW LOCATIONS.

OVER CENTRAL AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS...
ANY STORMS THAT REDEVELOP THIS AFTERNOON ARE EXPECTED TO REMAIN
BELOW SEVERE LIMITS.

TRUETT
Special weather statement, Jul 6, 3:50 PM CDT, 1 hour 11 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026-
027-034>036-041-042-047>052-059>065-072>075-084-085-099-070615-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
350 PM CDT SUN JUL 6 1997

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER
SERVICE FORECAST OFFICE IN ST LOUIS.  AREAS INCLUDED ARE PARTS OF
CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST
ILLINOIS.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTHEAST MISSOURI
AND WEST CENTRAL ILLINOIS THE REST OF THIS AFTERNOON AND INTO THE
EARLY EVENING...GENERALLY ALONG AND NORTH OF A COLUMBIA...PITTSFIELD
ILLINOIS LINE.

A STALLED FRONTAL BOUNDARY HAS CAUSED THUNDERSTORMS TO REDEVELOP ACROSS
NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS THIS AFTERNOON...AND
THESE STORMS WILL LINGER INTO THE EARLY EVENING HOURS.  THE SUNSHINE
THIS AFTERNOON HAS PRODUCED ENOUGH INSTABILITY THAT SOME OF THESE
STORMS MAY PRODUCE HAIL AND GUSTY WINDS. SPOTTER ACTIVATION MAY
BECOME NECESSARY IN A FEW LOCATIONS.

OVER EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS...
ANY STORMS THAT REDEVELOP ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS.

TRUETT
Special weather statement, Jul 6, 3:55 PM CDT, 1 hour 6 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026-
027-034>036-041-042-047>052-059>065-072>075-084-085-099-070615-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
350 PM CDT SUN JUL 6 1997

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER
SERVICE FORECAST OFFICE IN ST LOUIS.  AREAS INCLUDED ARE PARTS OF
CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST
ILLINOIS.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTHEAST MISSOURI
AND WEST CENTRAL ILLINOIS THE REST OF THIS AFTERNOON AND INTO THE
EARLY EVENING...GENERALLY ALONG AND NORTH OF A COLUMBIA...PITTSFIELD
ILLINOIS LINE.

A STALLED FRONTAL BOUNDARY HAS CAUSED THUNDERSTORMS TO REDEVELOP ACROSS
NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS THIS AFTERNOON...AND
THESE STORMS WILL LINGER INTO THE EARLY EVENING HOURS.  THE SUNSHINE
THIS AFTERNOON HAS PRODUCED ENOUGH INSTABILITY THAT SOME OF THESE
STORMS MA&Y PRODUCE HAIL AND GUSTY WINDS. SPOTTER ACTIVATION MAY
BECOME NECESSARY IN A FEW LOCATIONS.

OVER EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS...
ANY STORMS THAT REDEVELOP ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS.

TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 3:52 PM CDTSevere Thunderstorm WarningLSXClark, Knox, Lewis68 min
Jul 6, 5:16 PM CDTSevere Thunderstorm WarningLSXMonroe44 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.