Alert archive / Missouri / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 68, NWS St. Louis, MO

April 28, 1996Jefferson County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 28, 1996, 8:10 PM CDT for Jefferson 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
Apr 28, 1996, 8:10 PM CDT (01:10 UTC)
Expired
Apr 28, 1996, 9:00 PM CDT
In force
50 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Jefferson County, MO

The radar

The St Louis radar (KLSX), 50 km from the middle of the area, began a volume at 01:11 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

Lincoln, IL (KILX), launched 00:00Z, 1.2 hours before the alert went out and 268 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 1996-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 1996-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 142 square meters per square second.1939587897Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
477 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
142 m²/s²
0-3 km storm-relative helicity
404 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 290112
SVRSTL
MOC099-290200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
810 PM CDT SUN APR 28 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  900 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...JEFFERSON COUNTY
 
AT 810 PM WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM IN NORTHERN
WASHINGTON COUNTY EXTENDING FROM RICHWOODS TO ANTHONIES MILLS. THIS
STORM IS MOVING NORTHEAST AT 40 MPH. THE STORM WILL AFFECT THE TOWNS OF
DITTMER...HOUSE SPRINGS...HILLSBORO...AND DE SOTO BY 820 TO 830 PM
 
THIS STORM HAS A HISTORY OF PRODUCING NICKLE SIZE HAIL. SHTAY INSIDE AND
AWAY FROM WINDOWS.
 
WDB

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 7:14 PM CDTSevere Thunderstorm WarningLSXCrawford61 min
Apr 28, 7:43 PM CDTSevere Thunderstorm WarningLSXWashington47 min
Apr 28, 10:55 PM CDTFlash Flood WarningLSXSaint Louis, City of Saint Louis4 hr
Apr 28, 10:55 PM CDTFlash Flood WarningLSXFranklin, Jefferson4 hr
Apr 28, 10:55 PM CDTFlash Flood WarningLSXSaint Charles, Warren4 hr
Apr 28, 10:55 PM CDTFlash Flood WarningLSXGasconade4 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.