Alert archive / Illinois / Tornado Warnings in 1995

Tornado Warning 9, NWS St. Louis, MO

May 16, 1995Saint Clair County, Illinois

NWS St. Louis, MO issued this tornado warning at May 16, 1995, 9:40 PM CDT for Saint Clair County, Illinois. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
May 16, 1995, 9:40 PM CDT (02:40 UTC)
Expired
May 16, 1995, 10:30 PM CDT
In force
50 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Saint Clair County, IL

The radar

The St Louis radar (KLSX), 70 km from the middle of the area, began a volume at 02:40 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

Lincoln, IL (KILX), launched 00:00Z, 2.7 hours before the alert went out and 219 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 00:00Z on 1995-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 132 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, Lincoln, IL at 00:00Z on 1995-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
132 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
658 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 170243
TORSTL
ILC163-170330-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
940 PM CDT TUE MAY 16 1995
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ILLINOIS
 
   ...ST CLAIR COUNTY
 
AT 940 PM CDT...SPOTTERS AND ST. CLAIR COUNTY EOC REPORTED A TORNADO
ON THE GROUND NEAR MILLSTADT. THE TORNADO WAS MOVING TO THE EAST
AT 35 MPH.
 
THE TOWNS OF MASCOUTAH AND RENTCHLER ARE IN THE PATH OF THE TORNADO.
 
THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY AND SEEK SHELTER
NOW!
 
RP

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 7:36 PM CDTSevere Thunderstorm WarningLSXPike54 min
May 16, 9:21 PM CDTSevere Thunderstorm WarningLSXMadison, Saint Clair54 min
May 16, 9:53 PM CDTSevere Thunderstorm WarningLSXClinton52 min
May 16, 10:22 PM CDTSevere Thunderstorm WarningLSXMarion53 min
May 17, 2:22 AM CDTFlash Flood WarningLSXClinton, Saint Clair6 hr
May 17, 2:22 AM CDTFlash Flood WarningLSXMonroe6 hr
May 17, 2:22 AM CDTFlash Flood WarningLSXJefferson, Marion, Washington6 hr
May 17, 2:22 AM CDTFlash Flood WarningLSXCalhoun, Jersey, Madison6 hr

Nearby

Tornado Warnings in Illinois, 1995Every tornado warning in 1995Tornadoes in 1995

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.