Alert archive / Missouri / Tornado Warnings in 1993

Tornado Warning 13, NWS St. Louis, MO

September 13, 1993Franklin County, Missouri

NWS St. Louis, MO issued this tornado warning at Sep 13, 1993, 5:37 PM CDT for Franklin County, Missouri. It was in force for 38 min.

The area

The counties it named.

The facts

Issued
Sep 13, 1993, 5:37 PM CDT (22:37 UTC)
Expired
Sep 13, 1993, 6:15 PM CDT
In force
38 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Franklin County, MO

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.6 hours before the alert went out and 257 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 1993-09-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1993-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1262 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
50 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 132237
TORSTL
MOC071-132315-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
537 PM CDT MON SEP 13 1993
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  615 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...NORTHERN FRANKLIN COUNTY
 
AT 535 PM...THE FRANKLIN COUNTY SHERIFF REPORTED A TORNADO 5 MILES NORTH
OF BEAUFORT...IN NORTHERN FRANKLIN COUNTY. THIS STORM WAS MOVING
NORTHEAST AT 35 TO 40 MILES AN HOUR AND WILL BE PASSING NEAR THE CITY OF
WASHINGTON BY 600 PM.
 
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
&

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 13, 5:12 PM CDTTornado WarningLSXCrawford33 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; the sounding from the Mesonet's radiosonde archive.