Alert archive / Indiana / Tornado Warnings in 1987

Tornado Warning 1, NWS Indianapolis, IN

May 19, 1987Perry County, Spencer County, Indiana

NWS Indianapolis, IN issued this tornado warning at May 19, 1987, 9:37 PM EST for Perry County, Spencer County, Indiana. It was in force for 38 min.

The area

The counties it named.

The facts

Issued
May 19, 1987, 9:37 PM EST (02:37 UTC)
Expired
May 19, 1987, 10:15 PM EST
In force
38 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Perry County, IN, Spencer 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

Salem-Leckrone, IL (KSLO), launched 00:00Z, 2.6 hours before the alert went out and 193 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, Salem-Leckrone, IL at 00:00Z on 1987-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1723 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salem-Leckrone, IL at 00:00Z on 1987-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.1939Sfc1 km3 km6 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
1723 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1403 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
128 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 200238
TOREVV
INC123-147-200315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EVANSVILLE IN
937 PM CDT TUE MAY 19 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 1015 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

SOUTH CENTRAL INDIANA...PERRY AND SPENCER

AT (930 CDT RADAR AND PUBLIC REPORTS INDICATED A TORNADO NEAR
CHRISNEY IN SPENCER COUNTY INDIANA. IT WAS MOVING] EAST AT 20
MILES AN HOUR.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR
RELAY TO THE NATIONAL WEATHER SERVICE.
FIELDS

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 11:18 AM ESTSevere Thunderstorm WarningINDClinton, Montgomery57 min
May 20, 12:25 PM ESTSevere Thunderstorm WarningINDMontgomery35 min
May 20, 1:23 PM ESTSevere Thunderstorm WarningINDParke, Vermillion52 min
May 20, 2:28 PM ESTSevere Thunderstorm WarningINDMonroe, Owen47 min
May 20, 3:40 PM ESTSevere Thunderstorm WarningINDMonroe35 min
May 20, 4:00 PM ESTFlash Flood WarningINDMonroe, Owen2 hr

Nearby

Tornado Warnings in Indiana, 1987Every tornado warning in 1987Tornadoes in 1987

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.