Alert archive / Illinois / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 192, NWS St. Louis, MO

July 19, 1996Monroe County, Saint Clair County, Illinois; Jefferson County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 19, 1996, 7:59 PM CDT for Monroe County, Saint Clair County, Illinois; Jefferson County, Missouri. It was in force for 46 min. 9 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, 7:59 PM CDT (00:59 UTC)
Expired: Jul 19, 1996, 8:45 PM CDT
In force: 46 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Monroe County, IL, Saint Clair County, IL, Jefferson County, MO

What was reported inside it

Time	Report	Where
Jul 19, 8:00 PM CDT	Thunderstorm Wind 55	Arnold, MO
Jul 19, 8:00 PM CDT	Hail 1.75	Smithton, IL
Jul 19, 8:10 PM CDT	Thunderstorm Wind 55	New Athens, IL
Jul 19, 8:15 PM CDT	Thunderstorm Wind 55	Belleville, IL
Jul 19, 8:15 PM CDT	Hail 1	New Athens, IL
Jul 19, 8:20 PM CDT	Thunderstorm Wind 55	Pevely, MO
Jul 19, 8:25 PM CDT	Thunderstorm Wind 55	Columbia, IL
Jul 19, 8:35 PM CDT	Thunderstorm Wind 55	Waterloo, IL
Jul 19, 8:40 PM CDT	Thunderstorm Wind 55	Marissa, IL

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, 1.0 hours before the alert went out and 245 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 200104
SVRSTL
ILC133-163-MOC099-200145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
759 PM CDT FRI JUL 19 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  845 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ILLINOIS
 
   ...MONROE COUNTY...ST. CLAIR COUNTY
 
 
IN EAST CENTRAL MISSOURI
 
   ...SOUTHERN JEFFERSON COUNTY
 
AT 8PM...WEATHER SERIVCE RADAR SHOWED SEVERE THUNDERSTORMS EXTENDING
FROM NEAR FENTON TO COLUMBIA TO FREEBURG. THE STORMS WERE MOVING TO THE
SOUTHEAST AT 20 MPH. THE TOWNS OF FREEBURG...NEW ATHENS...AND WATERLOO
ARE IN THE PATH OF THE STORMS.
 
 4
THIS STORM HAS A HISTORY OF DAMAGING WINDS. SEEK INSIDE SHELTER
NOW!
 
AMS/FG

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 19, 6:59 PM CDT, 1 hour before

MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047-
051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095-
064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074-
MOZ065-011600-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
652 PM CDT FRI JUL 19 1996

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE
IN ST. LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND
EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING ALONG
AND NORTH OF I-70. THIS INCLUDES THE CITIES OF ST. LOUIS...
COLUMBIA...AND THE HANNIBAL/QUINCY AREA.

STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD K&EEP ADVISED OF
THE LATEST FORECAST FOR POSSIBLE SKYWARN ACTION.

AMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 7:34 PM CDT	Severe Thunderstorm Warning	LSX	Madison	56 min
Jul 19, 8:30 PM CDT	Severe Thunderstorm Warning	LSX	Randolph, Washington	45 min
Jul 19, 7:21 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	54 min
Jul 19, 7:42 PM CDT	Tornado Warning	LSX	Jefferson, Saint Louis	33 min
Jul 20, 2:58 PM CDT	Severe Thunderstorm Warning	LSX	Reynolds	32 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1996 Severe Thunderstorm Warnings in Missouri, 1996 Every 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.