Alert archive / Missouri / Tornado Warnings in 1996

Tornado Warning 40, NWS St. Louis, MO

July 19, 1996Jefferson County, Saint Louis County, Missouri

NWS St. Louis, MO issued this tornado warning at Jul 19, 1996, 7:42 PM CDT for Jefferson County, Saint Louis County, Missouri. It was in force for 33 min. 4 reports 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
Jul 19, 1996, 7:42 PM CDT (00:42 UTC)
Expired
Jul 19, 1996, 8:15 PM CDT
In force
33 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Jefferson County, MO, Saint Louis County, MO

What was reported inside it

TimeReportWhereRemark
Jul 19, 8:00 PM CDTThunderstorm Wind 55Crestwood, MO
Jul 19, 8:00 PM CDTThunderstorm Wind 55Arnold, MO
Jul 19, 8:10 PM CDTThunderstorm Wind 55Lemay, MO
Jul 19, 8:20 PM CDTThunderstorm Wind 55Pevely, MO

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.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 249 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, Lincoln, IL at 00:00Z on 1996-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1299 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, Lincoln, IL at 00:00Z on 1996-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.1939Sfc1 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
1299 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
884 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
203 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 200046
TORSTL
MOC099-189-200115-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
742 PM CDT FRI JUL 19 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  815 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL MISSOURI
 
   ...NORTHERN JEFFERSON COUNTY...SOUTHERN ST. LOUIS COUNTY
 
NUMEROUS REPORTS OF FUNNEL CLOUDS HAVE BEEN RECEIVED FROM THE VALLEY
PARK AREA. THE STORM PRODUCING THE FUNNEL CLOUD WAS MOVING TO THE
SOUTHEAST AT 20 MPH. THE TOWNS OF FENTON...MURPHY...HIGHRIDGE...AND
ARNOLD ARE IN THE PATH OF THE STORM.
 
 
 
IF YOU ARE IN THE PATH OF THIS STORM...TAKE COVER IN A BASEMENT
OR INTERIOR ROOM ON THE LOWEST LEVEL.
 
 
AMS/FG
&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 7:21 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis54 min
Jul 19, 7:59 PM CDTSevere Thunderstorm WarningLSXJefferson46 min
Jul 20, 2:58 PM CDTSevere Thunderstorm WarningLSXReynolds32 min

Nearby

Tornado Warnings in Missouri, 1996Every tornado warning in 1996Tornadoes in 1996

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.