Alert archive / Missouri / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 67, NWS St. Louis, MO

April 28, 1996Washington County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 28, 1996, 7:43 PM CDT for Washington County, Missouri. It was in force for 47 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, 7:43 PM CDT (00:43 UTC)
Expired
Apr 28, 1996, 8:30 PM CDT
In force
47 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Washington County, MO

The radar

The St Louis radar (KLSX), 84 km from the middle of the area, began a volume at 00:47 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

Springfield, MO (KSGF), launched 00:00Z, 0.7 hours before the alert went out and 284 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 00:00Z on 1996-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 293 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 00:00Z on 1996-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 366 square meters per square second.19395878Sfc1 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
293 J/kg
Mixed-layer CIN
-150 J/kg
Mixed-layer LCL
496 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
366 m²/s²
0-3 km storm-relative helicity
358 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 290046
SVRSTL
MOC221-290130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
743 PM CDT SUN APR 28 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  830 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...WASHINGTON COUNTY
 
AT 740 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS DETECTING A
SEVERE THUNDERSTORM EXTENDING FROM BOURBON TO CHEERYVILLE IN CRAWFORD
COUNTY. IT WAS MOVING TO THE NORTHEAST AT 40 MPH. IT WILL MOVE THROUGH
THE TOWNS OF ANTHONIES MILLS BY 755 PM...AND RICHWOODS AND POTOSI BY
810 PM. THIS STORM PRODUCED NICKLE SIZE HAIL IN STEELVILLE AT 736 PM.
 
THIS STORM HAS A HISTORY OF DAMAGING HAIL. STAY INSIDE AND AWAY
FROM WINDOWS.
 
GKS
 
 
&

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, 8:10 PM CDTSevere Thunderstorm WarningLSXJefferson50 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.