Alert archive / Illinois / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 130, NWS St. Louis, MO

May 25, 1996Madison County, Saint Clair County, Illinois; City of Saint Louis, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 25, 1996, 7:09 PM CDT for Madison County, Saint Clair County, Illinois; City of Saint Louis, Missouri. It was in force for 66 min. 4 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: May 25, 1996, 7:09 PM CDT (00:09 UTC)
Expired: May 25, 1996, 8:15 PM CDT
In force: 66 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Madison County, IL, Saint Clair County, IL, City of Saint Louis, MO

The radar

The St Louis radar (KLSX), 59 km from the middle of the area, began a volume at 00:11 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.

What was reported inside it

Time	Report	Where
May 25, 7:30 PM CDT	Hail 1.5	Scott Afb, IL
May 25, 7:35 PM CDT	Hail 1	Lebanon, IL
May 25, 7:40 PM CDT	Thunderstorm Wind 55	Collinsville, IL
May 25, 7:40 PM CDT	Thunderstorm Wind 55	Edwardsville, 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, 0.2 hours before the alert went out and 207 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: 13 J/kg
Mixed-layer CIN: -191 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 195 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 260011
SVRSTL
ILC119-163-MOC510-260115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
709 PM CDT SAT MAY 25 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  815 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ILLINOIS
 
   ...MADISON COUNTY...NORTHERN ST. CLAIR COUNTY
 
 
IN EAST CENTRAL MISSOURI THE INDEPENDENT CITY OF
 
   ...ST. LOUIS CITY
 
AT 708 PM CDT..DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM OVER NORTHERN
ST. LOUIS COUNTY. THIS STORM HAS HAD A HISTORY OF PRODUCING DAMAGING
WINDS. AT 702 PM...LAMBERT FIELD REPORTED 67 MPH GUSTS.
 
SOME TOWNS IN THE PATH OF THIS STORM ARE ALTON...ST. LOUIS CITY..
GRANITE CITY...EDWARDSVILLE....COLLINSVILLE...CENTREVILLE AND
BELLEVILLE.
 
THE SEVERE THUNDERSTORM WAS MOVING TO THE EAST 25 MPH.
 
THIS STORM HAS A HISTORY OF DAMAGING WINDS. SEEK INSIDE SHELTER
NOW!
 
RP/DF
 
&

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 7:00 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey, Macoupin	60 min
May 25, 7:38 PM CDT	Severe Thunderstorm Warning	LSX	Montgomery	67 min
May 25, 7:40 PM CDT	Severe Thunderstorm Warning	LSX	Clinton	65 min
May 25, 7:45 PM CDT	Tornado Warning	LSX	Macoupin, Montgomery	45 min
May 25, 8:01 PM CDT	Severe Thunderstorm Warning	LSX	Bond	44 min
May 25, 8:40 PM CDT	Severe Thunderstorm Warning	LSX	Marion	60 min
May 25, 8:40 PM CDT	Severe Thunderstorm Warning	LSX	Fayette	50 min
May 25, 8:45 PM CDT	Tornado Warning	LSX	Marion	45 min
May 26, 2:15 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson	45 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; radar from the NEXRAD Level II archive.