Alert archive / Illinois / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 171, NWS St. Louis, MO

June 6, 1996Marion County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 6, 1996, 3:45 PM CDT for Marion County, Illinois. It was in force for 45 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
Jun 6, 1996, 3:45 PM CDT (20:45 UTC)
Expired
Jun 6, 1996, 4:30 PM CDT
In force
45 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Marion County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.8 hours before the alert went out and 169 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 12:00Z on 1996-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 1996-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 square meters per square second.193958Sfc1 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
1194 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
88 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 062046
SVRSTL
ILC121-062130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
345 PM CDT THU JUN 6 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL ILLINOIS
 
   ...MARION COUNTY
 
AT 343 PM...RADAR INDICATED A SEVERE THUNDERSTORM IN EXTREME WESTERN
MARION COUNTY NEAR SANDOVAL...MOVING EAST AT 30 MPH.
 
THIS STORM IS CAPABLE OF DAMAGING WINDS OF 60 MPH AND HAIL UP TO 1 INCH
IN DIAMETER.  PEOPLE IN THE TOWNS OF SANDOVAL...SALEM...AND ODIN SHOULD
TAKE SHELTER.
 
SEEK SHELTER IN A STURDY BUILDING. REMEMBER SEVERE THUNDERSTORMS
OFTEN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
 
GLASS/TRUETT

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, Jun 6, 10:23 AM CDT, 5 hours 22 minutes before
MOZ009-010-018-019-026-027-034>036-041-042-047>052-059>065-072>075-
084-085-099-ILZ058>060-064-065-069-070-074-079-095>102-071100-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1030 AM CDT T

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 5, 9:30 PM CDTSevere Thunderstorm WarningLSXAdams60 min
Jun 5, 9:56 PM CDTTornado WarningLSXAdams34 min
Jun 5, 10:07 PM CDTSevere Thunderstorm WarningLSXPike68 min
Jun 5, 10:24 PM CDTTornado WarningLSXPike36 min
Jun 6, 2:26 PM CDTSevere Thunderstorm WarningLSXMonroe, Saint Clair49 min
Jun 6, 2:59 PM CDTSevere Thunderstorm WarningLSXMonroe, Randolph46 min

Nearby

Severe Thunderstorm Warnings in Illinois, 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.