Alert archive / Illinois / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 17, NWS Indianapolis, IN

April 20, 1995Gallatin County, Illinois; Union County, Kentucky

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 20, 1995, 4:09 PM CDT for Gallatin County, Illinois; Union County, Kentucky. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Apr 20, 1995, 4:09 PM CDT (21:09 UTC)
Expired
Apr 20, 1995, 4:40 PM CDT
In force
31 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Gallatin County, IL, Union County, KY

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.2 hours before the alert went out and 220 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, Nashville Metro, TN at 12:00Z on 1995-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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, Nashville Metro, TN at 12:00Z on 1995-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 188 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
2 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
792 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
188 m²/s²
0-3 km storm-relative helicity
107 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 KEVV 202109
SVREVV
ILC059-KYC225-202200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EVANSVILLE IN
409 PM CDT THU APR 20 1995
 
THE NATIONAL WEATHER SERVICE IN EVANSVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST ILLINOIS
 
   ...GALLATIN COUNTY
 
 
IN NORTHWEST KENTUCKY
 
   ...UNION COUNTY
 
AT 407 PM CDT...WEATHER RADAR INDICATED A SEVERE THUNDERSTORM 35 MILES
SOUTHWEST OF EVANSVILLE AND JUST SOUTH OF JUNCTION ILLINOIS. THIS SEVERE
THUNDERSTORM WAS MOVING TO THE NORTHEAST AT 45 MILES AN HOUR AND WILL
MOVE OVER JUNCTION ILLIONOIS BEFORE 430 PM AND REACH UNIONTOWN KENTUCKY
BEFORE 5 PM CDT.
 
PERSONS IN THE VICINITY OF THIS SEVERE THUNDERSTORM SHOULD SEEK SHELTER
IMMEDIATELY.
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
 
ZIMMER

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, Apr 20, 2:51 PM CDT, 1 hour 18 minutes before
INZ001>092-202100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
250 PM EST THU APR 20 1994

IN INDIANA A TORNADO WATCH IS IN EFFECT UNTIL 9 PM EST AND INCLUDES
THAT PART OF INDIANA SOUTH OF A LINE FROM 10 MILES NORTH OF TERRE
HAUTE TO 35 MILES NORTHEAST OF COLUMBUS...AND WEST OF A LINE FROM
35 MILES NORTHEAST OF COLUMBUS TO 10 MILES EAST OF MADISON.

SOME CITIES INCLUDED ARE TERRE HAUTE...BLOOMINGTON...COLUMBUS...
BEDFORD...SEYMOUR...VINCENNES...MADISON...JASPER AND EVANSVILLE.

REMEMBER...A WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR SEVERE
WEATHER IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD
BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR
LATER STATEMENTS AND POSSIBLE WARNINGS.

ZIMMERMAN
Special weather statement, Apr 20, 3:39 PM CDT, 30 minutes before
INZ001>092-202100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
338 PM EST THU APR 20 1994

A TORNADO WATCH IS IN EFFECT UNTIL 9 PM EST FOR MUCH OF SOUTHERN
INDIANA.

AT 325 PM EST...THUNDERSTORMS DEVELOPED OVER EXTREME SOUTHERN
ILLINOIS AND EXTREME WESTERN KENTUCKY.

AT 330 PM EST...THUNDERSTORMS WERE MOVING INTO EXTREME SOUTHWEST
INDIANA.  NO SEVERE WEATHER HAS BEEN REPORTED IN INDIANA...BUT THE
STORMS WILL INTENSIFY AS THEY MOVE NORTHEAST AT 45 MILES AN HOUR.

BE ON THE LOOKOUT AND STAY TUNED TO NOAA WEATHER RADIO OR OTHER
SOURCES FOR UPDATES ON THIS DEVELOPING WEATHER SITUATION.

CT

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 20, 3:30 PM CDTSevere Thunderstorm WarningINDGallatin30 min
Apr 20, 1:48 AM CDTSevere Thunderstorm WarningINDLogan, Simpson57 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1995Severe Thunderstorm Warnings in Kentucky, 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.