Alert archive / Missouri / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 189, NWS St. Louis, MO

July 19, 1996Calhoun County, Illinois; Lincoln County, Saint Charles County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 19, 1996, 6:58 PM CDT for Calhoun County, Illinois; Lincoln County, Saint Charles County, Missouri. It was in force for 62 min. 5 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, 6:58 PM CDT (23:58 UTC)
Expired: Jul 19, 1996, 8:00 PM CDT
In force: 62 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Calhoun County, IL, Lincoln County, MO, Saint Charles County, MO

What was reported inside it

Time	Report	Where
Jul 19, 7:15 PM CDT	Thunderstorm Wind 55	Troy, MO
Jul 19, 7:30 PM CDT	Thunderstorm Wind 55	St Charles, MO
Jul 19, 7:30 PM CDT	Thunderstorm Wind 55	O Fallon, MO
Jul 19, 7:30 PM CDT	Thunderstorm Wind 55	Beechville, IL
Jul 19, 7:55 PM CDT	Thunderstorm Wind 55	Troy, 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, 12.0 hours before the alert went out and 225 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: 2521 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 736 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 94 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 200002
SVRSTL
ILC013-MOC113-183-200100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
658 PM CDT FRI JUL 19 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  800 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ILLINOIS
 
   ...SOUTHERN CALHOUN COUNTY
 
 
IN EAST CENTRAL MISSOURI
 
   ...SOUTHERN LINCOLN COUNTY...ST. CHARLES COUNTY
 
AT 658 PM...NWS DOPPLER RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS
EXTENDING FROM HAWK POINT THROUGH TROY AND WINFIELD TO JUST SOUTH OF
HARDIN. THESE STORMS WERE MOVING SOUTHEAST AT 20 MPH.
 
PEOPLE IN THE TOWNS OF WENTZVILLE...O'FALLON...BRUSSELS...ST CHARLES
...AND ST PETERS CAN EXPECT DAMAGING WINDS UP TO 60 MPH AS THE LINE OF
STORMS MOVES THROUGH.
 
SEEK SHELTER IN A STURDY BUILDING. REMEMBER SEVERE THUNDERSTORMS
OFTEN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
 4
GLASS/FERRY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 5:57 PM CDT	Severe Thunderstorm Warning	LSX	Pike	33 min

Nearby

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