Alert archive / Missouri / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 104, NWS St. Louis, MO

June 13, 1997Crawford County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 13, 1997, 3:55 PM CDT for Crawford County, Missouri. It was in force for 50 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
Jun 13, 1997, 3:55 PM CDT (20:55 UTC)
Expired
Jun 13, 1997, 4:45 PM CDT
In force
50 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Crawford County, MO

The radar

The St Louis radar (KLSX), 97 km from the middle of the area, began a volume at 20:58 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

Springfield, MO (KSGF), launched 12:00Z, 8.9 hours before the alert went out and 251 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, Springfield, MO at 12:00Z on 1997-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 39 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, Springfield, MO at 12:00Z on 1997-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -200 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
39 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
509 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-200 m²/s²
0-3 km storm-relative helicity
-156 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

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

099 
WUUS1 KSTL 132057 RRA
SVRSTL
MOC055-132145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
355 PM CDT FRI JUN 13 1997
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...CRAWFORD COUNTY
 
AT 355 PM...RADAR INDICATED A SEVERE THUNDERSTORM JUST WEST OF COOKS
STATION MOVING TO THE NORTHEAST AT 25 MPH.
 
TOWNS IN THE PATH OF THE STORM ARE COOK STATION AND STEELEVILLE.
 
THIS IS A DANGEROUS STORM BE PREPARED FOR DAMAGING WINDS...HAIL
AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS.
 
ECKBERG

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, Jun 13, 11:20 AM CDT, 4 hours 35 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>075-084-085-099-141000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1120 AM CDT FRI JUN 13 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.

THE LINE OF STRONG THUNDERSTORMS MOVING THROUGH PARTS OF SOUTHWEST
ILLINOIS WILL CONTINUE TO PRODUCE STRONG WIND GUSTS AROUND 40 MPH.
THE LINE OF STORMS SHOULD MOVE OUT OF THE COUNTY WARNING AREA BY EARLY
AFTERNOON.  THE STORMS IN THIS LINE SHOULD REMAIN BELOW SEVERE LIMITS.
ADDITIONAL THUNDERSTORM DEVELOPMENT IS EXPECTED LATE THIS AFTERNOON.
HOWEVER...THESE STORMS ARE ALSO EXPECTED TO STAY BELOW SEVERE LIMITS.

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

FERRY
Special weather statement, Jun 13, 11:23 AM CDT, 4 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>075-084-085-099-141000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1120 AM CDT FRI JUN 13 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.

THE LINE OF STRONG THUNDERSTORMS MOVING THROUGH PARTS OF SOUTHWEST
ILLINOIS WILL CONTINUE TO PRODUCE STRONG WIND GUSTS AROUND 40 MPH.
THE LINE OF STORMS SHOULD MOVE OUT OF THE COUNTY WARNING AREA BY EARLY
AFTERNOON.  THE STORMS IN THIS LINE SHOULD REMAIN BELOW| SEVERE LIMITS.
ADDITIONAL THUNDERSTORM DEVELOPMENT IS EXPECTED LATE THIS AFTERNOON.
HOWEVER...THESE STORMS ARE ALSO EXPECTED TO STAY BELOW SEVERE LIMITS.

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

FERRY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 8:49 PM CDTSevere Thunderstorm WarningLSXAudrain, Boone, Callaway41 min
Jun 13, 3:58 PM CDTSevere Thunderstorm WarningLSXWashington47 min
Jun 13, 4:48 PM CDTSevere Thunderstorm WarningLSXSaint Francois, Washington42 min
Jun 13, 5:00 PM CDTTornado WarningLSXSaint Francois45 min
Jun 13, 5:21 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve54 min
Jun 13, 6:02 PM CDTSevere Thunderstorm WarningLSXIron28 min
Jun 13, 6:39 PM CDTSevere Thunderstorm WarningLSXMadison, Saint Francois51 min
Jun 13, 6:53 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve52 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.