Alert archive / Indiana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 97, NWS Indianapolis, IN

July 1, 1986Vanderburgh County, Warrick County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 1, 1986, 3:14 PM CDT for Vanderburgh County, Warrick County, Indiana. It was in force for 46 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 1, 1986, 3:14 PM CDT (20:14 UTC)
Expired
Jul 1, 1986, 4:00 PM CDT
In force
46 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Vanderburgh County, IN, Warrick County, IN

The radar

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

What was reported inside it

TimeReportWhereRemark
Jul 1, 3:18 PM CDTThunderstorm Wind 52Vanderburgh, IN
Jul 1, 3:18 PM CDTThunderstorm Wind 0Vanderburgh, IN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Salem-Leckrone, IL (KSLO), launched 12:00Z, 8.2 hours before the alert went out and 144 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 12:00Z on 1986-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1991 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 12:00Z on 1986-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.193958Sfc1 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
1991 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
566 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KEVV 012014
SVREVV
INC163-173-012100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EVANSVILLE IN
314 PM CDT TUE JUL 1 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 400 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTHWEST INDIANA...EASTERN VANDERBURGH AND WESTERN WARRICK

AT 3PM CDT  WEATHER RADAR INDICALED A SEVERE THUNDERSTORM
OVER EVANSVILLE MOVING MEAST AT 25 TO 30 MILES AN HOUR.

THIS STORM IS ACCOMPANIED BY FREQUENT AND DANGEROUS LIGHTING.

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 1, 2:44 PM CDT, 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
240 PM EST TUE JUL 1 1986

...SEVERE THUNDERSTORM WATCH FOR MOST OF SOUTHERN INDIANA TILL 9 PM...

THE SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THAT PART OF INDIANA
SOUTH OF A LINE FROM 10 MILES NORTH OF SULLIVAN TO BROOKVILLE. THE
WATCH WILL EXPIRE AT 9 PM EST.

AT 235 PM EST RADAR SHOWED A LARGE AREA OF RAIN COVERING MUCH OF THE
NORTHERN HALF OF INDIANA. A NARROW LINE OF THUNDERSTORMS WAS EMBEDDED
IN THE AREA FROM SOUTHERN WHITLEY COUNTY TO BUNKER HILL TO NORTHERN
VERMILLION COUNTY.

THE STRONGEST STORMS WERE IN WEST CENTRAL INDIANA NEAR CAYUGA IN
NORTHERN VERMILLION COUNTY AND VEEDERSBURG IN SOUTHEAST FOUNTAIN COUNTY.
THESE STORMS DID NOT LOOK SEVERE AT 235 PM BUT COULD BE CAPABLE OF
PRODUCING HEAVY RAIN..SMALL HAIL..AND GUSTY WINDS OF 30 TO 40 MPH.

PEOPLE IN THE WATCH AREA SHOULD REMAIN ALERT FOR THREATENING WEATHER AND
SHOULD REPORT SEVERE WEATHER 5TO THE LOCAL POLICE..SHERIFF..OR THE STATE
POLICE.

DF
Special weather statement, Jul 1, 3:06 PM CDT, 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
305 PM EST TUE JUL 1 1986

...SEVERE THUNDERSTORM WATCH FOR MOST OF SOUTHERN INDIANA TILL 9 PM...

THE SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THAT PART OF INDIANA
SOUTH OF A LINE FROM 10 MILES NORTH OF SULLIVAN TO BROOKVILLE. THE
WATCH WILL EXPIRE AT 9 PM EST.

AT 300 PM EST RADAR SHOWED A LARGE AREA OF RAIN COVERING MUCH OF
NORTHERN AND CENTRAL INDIANA. THUNDERSTORMS EMBEDDED IN THE RAIN
EXTENDED FROM ABOUT 15 MILES SOUTHWEST OF FORT WAYNE TO JUST NORTH
OF CRAWFORDSVILLE AND ON BACK INTO ILLINOIS.

THE STRONGEST STORM WAS ABOUT 5 MILES SOUTHWEST OF CRAWFORDSVILLE.
ITS SOUTHEAST MOVEMENT WILL TAKE IT SOUTH OF THE CRAWFORDSVILLE AREA.

ALL THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR. THE
STORMS DID NOT LOOK SEVERE AT 300 PM EST BUT STILL COULD BE CAPABLE
OF PRODUCING SOME WIND GUSTS TO 30 OR 40 MPH.

PEOPLE IN THE WATCH AREA SHOULD EREMAIN ALERT FOR THREATENING WEATHER AND
SHOULD REPORT SEVERE WEATHER TO THE LOCAL POLICE..SHERIFF..OR THE STATE
POLICE FOR RELAY TO THE NATIONAL WEATHER SERVICE.

DF

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 6:40 PM CDTSevere Thunderstorm WarningINDUnion30 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.