Alert archive / Missouri / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 180, NWS St. Louis, MO

June 12, 1996Saint Louis County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 12, 1996, 4:26 PM CDT for Saint Louis County, Missouri. It was in force for 49 min. 3 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
Jun 12, 1996, 4:26 PM CDT (21:26 UTC)
Expired
Jun 12, 1996, 5:15 PM CDT
In force
49 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Saint Louis County, MO

The radar

The St Louis radar (KLSX), 22 km from the middle of the area, began a volume at 21:26 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.

What was reported inside it

TimeReportWhereRemark
Jun 12, 4:40 PM CDTThunderstorm Wind 51Chesterfield, MO
Jun 12, 4:55 PM CDTThunderstorm Wind 51Manchester, MO
Jun 12, 4:55 PM CDTThunderstorm Wind 51Chesterfield, 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 12:00Z, 9.4 hours before the alert went out and 231 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 12:00Z on 1996-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 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 12:00Z on 1996-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
7 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
912 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
-2 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 122129
SVRSTL
MOC189-122215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
426 PM CDT WED JUN 12 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...WESTERN ST. LOUIS COUNTY
 
AT 427 PM CDT...A SEVERE THUNDESTORM LOCATED AT WELDON SPRINGS MOVING
SOUTHEAST AT 15 MPH.
 
THIS STORM HAS HAD A HISTORY OF DAMAGING WINDS AND HAIL.
 
TOWNS IN THE PATH OF THIS STORM..CHESTERFIELD...BALDWIN...AND
MANCHESTER.
 
RP
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 3:15 PM CDTSevere Thunderstorm WarningLSXLincoln45 min
Jun 12, 3:46 PM CDTSevere Thunderstorm WarningLSXSaint Charles44 min
Jun 12, 4:11 PM CDTSevere Thunderstorm WarningLSXSaint Charles49 min
Jun 12, 6:19 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve41 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1996Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.