Alert archive / Indiana / Tornado Warnings in 1990

Tornado Warning 46, NWS Indianapolis, IN

August 20, 1990Warrick County, Indiana

NWS Indianapolis, IN issued this tornado warning at Aug 20, 1990, 5:31 PM CDT for Warrick County, Indiana. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Aug 20, 1990, 5:31 PM CDT (22:31 UTC)
Expired
Aug 20, 1990, 6:00 PM CDT
In force
29 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Warrick County, IN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.5 hours before the alert went out and 170 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, Paducah/Barkley, KY at 12:00Z on 1990-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2036 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, Paducah/Barkley, KY at 12:00Z on 1990-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
2036 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1196 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
38 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 202232
TOREVV
INC173-202300-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EVANSVILLE IN
531 PM CDT MON AUG 20 1990
 
THE NATIONAL WEATHER SERVICE IN EVANSVILLE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  600 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHWEST INDIANA
          ...WARRICK
 
A TORNADO WAS REPORTED BY THE INDIANA STATE POLICE NEAR STEVENSON
STATION IN WARRICK COUNTY INDIANA AT 530 PM CDT. THE TORNADO WAS
MOVING NORTHEAST AT 15 MPH TOWARD BOONVILLE AND DALE INDIANA.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIONR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 8:02 PM CDTSevere Thunderstorm WarningINDDelaware, Henry28 min
Aug 19, 8:29 PM CDTSevere Thunderstorm WarningINDHenry31 min
Aug 19, 8:50 PM CDTFlash Flood WarningINDHancock3 hr
Aug 19, 9:16 PM CDTSevere Thunderstorm WarningINDFayette44 min
Aug 20, 1:59 PM CDTSevere Thunderstorm WarningINDHancock, Shelby31 min
Aug 20, 2:26 PM CDTSevere Thunderstorm WarningINDMadison, Tipton34 min
Aug 20, 2:36 PM CDTSevere Thunderstorm WarningINDHenry, Rush39 min
Aug 20, 3:38 PM CDTFlash Flood WarningINDMadison82 min
Aug 20, 3:46 PM CDTFlash Flood WarningINDHoward3 hr
Aug 20, 6:56 PM CDTSevere Thunderstorm WarningINDRandolph64 min

Nearby

Tornado Warnings in Indiana, 1990Every tornado warning in 1990Tornadoes in 1990

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.