Alert archive / Missouri / Tornado Warnings in 1993

Tornado Warning 12, NWS St. Louis, MO

September 13, 1993Crawford County, Missouri

NWS St. Louis, MO issued this tornado warning at Sep 13, 1993, 5:12 PM CDT for Crawford County, Missouri. 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
Sep 13, 1993, 5:12 PM CDT (22:12 UTC)
Expired
Sep 13, 1993, 5:45 PM CDT
In force
33 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Crawford County, MO

What was reported inside it

TimeReportWhereRemark
Sep 13, 5:27 PM CDTTornado F0Leasburg, MOA tornado touched down briefly producing wind damage to trees in the Huzzah State Forest.

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

Springfield, MO (KUMN), launched 12:00Z, 10.2 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 1993-09-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 876 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 1993-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 312 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
876 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
312 m²/s²
0-3 km storm-relative helicity
308 m²/s²
Significant tornado parameter
1.1
Supercell composite
6.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 132214
TORSTL
MOC055-132245-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
512 PM CDT MON SEP 13 1993
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...CRAWFORD COUNTY
 
AT 508 PM...A CONSERVATION AGENT REPORTED A FUNNEL CLOUD SOUTHWEST OF
STEELVILLE. SOME DAMAGE HAS ALSO BEEN REPORTED BY THE MISSOURI HIGHWAY
PATROL. THIS STORM WAS MOVING NORTHEAST AT 35 MILES AN HOUR AND WILL
PASS NEAR STEELVILLE AND COMMINUNITES NORTHEAST OF THERE BETWEEN 515 AND
545 PM.
 
THIS STORM AND FUNNEL CLOUD MAY TOUCHDOWN SO BE PREPARED TO TAKE
SHELTER.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
 
SHEA
&

What forecasters said that day

The local office's own words before this tornado 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, Sep 13, 3:08 PM CDT, 2 hours 4 minutes before
MOZ004-005-008-132215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
308 PM CDT MON SEP 13 1993

...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR PARTS OF NORTHWEST
AND WEST CENTRAL MISSOURI...

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
PARTS OF NORTHWEST AND WEST CENTRAL MISSOURI...INCLUDING THE KANSAS CITY
AND ST JOSEPH AREAS.  THE WATCH WILL BE IN EFFECT UNTIL 900 PM THIS
EVENING.

AS A STRONG COLD FRONT APPROACHES FROM THE NORTHWEST...CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORM DEVELOPMENT THIS AFTERNOON AND
EVENING.  SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE
HAIL...FREQUENT LIGHTNING AND VERY HEAVY RAIN.  OCCASIONALLY SEVERE
THUNDERSTORMS ALSO PRODUCE TORNADOES SO REMAIN ALERT.

FOR LATER STATEMENTS AND POSSIBLE WARNINGS...TUNE TO NOAA WEATHER RADIO.

SHEA
Special weather statement, Sep 13, 3:09 PM CDT, 2 hours 3 minutes before
MOZ004-005-008-132215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
308 PM CDT MON SEP 13 1993

...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR PARTS OF NORTHWEST
AND WEST CENTRAL MISSOURI...

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
PARTS OF NORTHWEST AND WEST CENTRAL MISSOURI...INCLUDING THE KANSAS CITY
AND ST JOSEPH AREAS.  THE WATCH WILL BE IN EFFECT UNTIL 900 PM THIS
EVENING.

AS A STRONG COLD FRONT APPROACHES FROM THE NORTHWEST...CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORM DEVELOPMENT THIS AFTERNOON AND
EVENING.  SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE
HAIL...FREQUENT LIGHTNING AND VERY HEAVY RAIN.  OCCASIONALLY SEVERE
THUNDERSTORMS ALSO PRODUCE TORNADOES SO REMAIN ALERT.

FOR LATER STATEMENTS AND POSSIBLE WARNINGS...TUNE TO NOAA WEATHER RADIO.

SHEA

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 13, 5:37 PM CDTTornado WarningLSXFranklin38 min
Sep 13, 5:57 PM CDTTornado WarningLSXCrawford, Franklin33 min
Sep 13, 6:30 PM CDTTornado WarningLSXFranklin30 min
Sep 13, 6:36 PM CDTSevere Thunderstorm WarningLSXCrawford, Dent39 min

Nearby

Tornado Warnings in Missouri, 1993Every tornado warning in 1993Tornadoes in 1993

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.