Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 113, NWS Lincoln, IL

August 16, 1995Cass County, Morgan County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Aug 16, 1995, 4:02 PM CDT for Cass County, Morgan County, Illinois. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
Aug 16, 1995, 4:02 PM CDT (21:02 UTC)
Expired
Aug 16, 1995, 4:35 PM CDT
In force
33 min
Issued by
NWS Lincoln, IL
Area
Whole counties

Counties Cass County, IL, Morgan County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.0 hours before the alert went out and 142 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 1995-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2119 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 1995-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.1939Sfc1 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
2119 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
814 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSPI 162103 RRA
SVRSPI
ILC017-137-162200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD IL
402 PM CDT WED AUG 16 1995
 
THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL ILLINOIS
 
   ...CASS COUNTY...NORTHERN MORGAN COUNTY
 
AT 4 PM CDT...DOPPLER RADAR IN LINCOLN SHOWED A SEVERE THUNDERSTORM 50
MILES NORTHWEST OF SPRINGFIELD...OR 10 MILES SOUTHWEST OF BEARDSTOWN.
THIS STORM HAS A HISTORY OF PRODUCING WIND GUSTS IN EXCESS OF 70 MPH.
 
THE STORM WAS MOVING TO THE EAST AT 20 MPH...AND SHOULD PASS NEAR THE
TOWNS OF BEARDSTOWN AND MEREDOSIA BY 410 PM...AND VIRGINIA BY 445 PM.
 
THIS IS A DANGEROUS STORM...CAPABLE OF BLOWING DOWN TREES AND
DAMAGING ROOFS AND WINDOWS. GET INDOORS AND STAY AWAY FROM WINDOWS.
$$
 
GEELHART
 
&

Nearby

Severe Thunderstorm Warnings in Illinois, 1995Every severe thunderstorm warning 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.