Alert archive / Indiana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 104, NWS Indianapolis, IN

July 10, 1986Benton County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 10, 1986, 7:10 PM EST for Benton County, Indiana. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
Jul 10, 1986, 7:10 PM EST (00:10 UTC)
Expired
Jul 10, 1986, 7:45 PM EST
In force
35 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Benton 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, 0.2 hours before the alert went out and 257 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 1986-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 933 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, Salem-Leckrone, IL at 00:00Z on 1986-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
933 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
1223 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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 KIND 110008
SVRIND
INC007-110045-

BULLETIN...IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
710 PM EST THU JUL 10 1986


THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 745 PM EST FOR PERSONS IN THE FOLLOWING

NORTHWEST       INDIANA COUNTY OF   BENTON

AT 710 PM A SEVERE THUNDERSTORM WAS 5 MILES SOUTHWEST OF KENTLAND...
30 MILES NORTHWEST OF LAFAYETTE...AND MOVING EAST AT 30 MILES AN HOUR.

PEOPLE IN THE PATH OF THIS STORM SHOULD SEEK SHELTER IMMEDIATELY.

REMEMBER A SEVERE THUNDERSTORM PRODUCES DAMAGING WINDS IN
EXCESS OF 60 MILES AN HOUR..LARGE HAIL..FREQUENT LIGHTNING
AND POSSIBLE HEAVY RAIN THAT CAN QUICKLFY FLOOD LOW AREAS.

THESE STORMS CAN ALSO PRODUCE A SMALL TORNADO WITH LITTLE
OR NO ADVANCE WARNING.

REPORT SEVERE WEATHER TO THE POLICE..SHERIFF..OR STATE POLICE
FOR RELAY TO THE NATIONAL WEATHER SERVICE.

DS

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, Jul 10, 6:23 PM EST, 47 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
620 PM EST THU JUL 10 1986

AT 615 PM EST...THERE WAS NO RAIN IN CENTRAL INDIANA.

HOWEVER...THERE WERE SHOWERS SCATTERED OVER PARTS OF EXTREME NORTHERN
AND EXTREME SOUTHWEST INDIANA.

IN ADDITION...VERY HEAVY THUNDERSTORMS WERE IN NORTHEAST ILLINOIS FROM
KANKAKEE TO NEAR BLOOMINGTON. THESE THUNDERSTORMS WILL BE MOVING INTO
THE NORTHWEST INDIANA COUNTIES OF NEWTON AND NOR THERN BENTON BETWEEN
645PM AND 730PM EST. RAIN WILL BE HEAVY IN THE CITIES OF
MOROCCO...SHELDON AND GOODLAND. STRONG GUSTY WINDS AND SOME HAIL ARE
ALSO POSSIBLE WITH THESE STORMS.

KENYON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 2:50 PM ESTSevere Thunderstorm WarningINDWayne30 min
Jul 11, 3:34 PM ESTSevere Thunderstorm WarningINDParke26 min
Jul 11, 4:18 PM ESTSevere Thunderstorm WarningINDVigo42 min
Jul 11, 4:40 PM ESTSevere Thunderstorm WarningINDMarion50 min
Jul 11, 4:50 PM ESTSevere Thunderstorm WarningINDHamilton40 min
Jul 11, 5:10 PM ESTSevere Thunderstorm WarningINDHancock35 min
Jul 11, 5:50 PM ESTSevere Thunderstorm WarningINDHenry40 min
Jul 11, 5:58 PM ESTSevere Thunderstorm WarningINDDelaware32 min
Jul 11, 6:13 PM ESTSevere Thunderstorm WarningINDJohnson37 min
Jul 11, 6:13 PM ESTSevere Thunderstorm WarningINDShelby47 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1986Every severe thunderstorm warning in 1986

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.