Alert archive / Indiana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 66, NWS Indianapolis, IN

June 11, 1986Johnson County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 11, 1986, 8:30 PM EST for Johnson County, Indiana. It was in force for 30 min. 1 report 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
Jun 11, 1986, 8:30 PM EST (01:30 UTC)
Expired
Jun 11, 1986, 9:00 PM EST
In force
30 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Johnson 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
Jun 11, 8:35 PM ESTThunderstorm Wind 0Johnson, 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

Dayton/James M C, OH (KDAY), launched 00:00Z, 1.5 hours before the alert went out and 169 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, Dayton/James M C, OH at 00:00Z on 1986-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1512 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, Dayton/James M C, OH at 00:00Z on 1986-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
1512 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 120133
SVRIND
INC081-120200-

BULLETIN...IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
830 PM EST WED JUN 11 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 900 PM EST FOR PERSONS IN THE FOLLOWING

CENTRAL INDIANA COUNTY OF...JOHNSON

AT 830 PM EST...JOHSON COUNTY SHERIFF REPORTED A SEVERE THUNDERSTORM
AT NEW WHITLAND.

THE STORM WAS MOVING EAST AT 25 MILES AN HOUR.

DAMAGING WINDS ARE LIKELY WITH THE PASSAGE OF THIS STORM.

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 QUICKLY FLOOD LOW AREAS.

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

HAINES

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, Jun 11, 4:52 PM EST, 3 hours 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
450 PM EST WED JUN 11 1986

A TORNADO WATCH REMAINS IN EFFECT FOR THE WEST AND CENTRAL PARTS OF
INDIANA UNTIL 9 PM EST.

AT 445 PM EST...SCATTERED SHOWERS AND A FEW VERY STRONG THUNDERSTORMS
WERE OVER THE CENTRAL TWO THIRDS OF INDIANA. THE MOST CONCENTRATED AREA
OF PRECIPITATION WAS IN A 30 TO 40 MILE WIDE BAND THAT STRETCHED FROM
MONTICELLO SOUTHEAST TO NEAR MADISON ON THE OHIO RIVER.

THE MOST INTENSE THUNDERSTORMS WERE OVER WEST CENTRAL AND SOUTH CENTRAL
INDIANA.

STRONGEST THUNDERSTORMS EXTENDED FROM NEAR TERRE HAUTE TO 40 MILES
NORTHEAST OF TERRE HAUTE. OTHER STRONG STORMS EXTENDED FROM JUST NORTH
OF COLUMBUS TO 10 MILES NORTH OF WESTPORT...OR FROM 35 MILES SOUTH TO
50 MILES SOUTH OF INDIANAPOLIS.
.
MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR.
.
THE STRONG THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY DOWNPOURS...
STRONG GUSTY WINDS AND DANGEROUS LIGHTNING.
.
PEOPLE SHOULD REMAIN ALERT IN THE WATCH AREA AND IF SEVERE WEATHER
WARNINGS ARE ISSUED FOR YOUR AREA...TAKE COVER IMMEDIATELY.

NO SEVERE WEATHER HAS BEEN REPORTED TO THE NATIONAL WEATHER SERVICE
UP UNTIL 450 PM EST.
STEIGERWALDlT
Special weather statement, Jun 11, 5:21 PM EST, 3 hours 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
520 PM EST WED JUN 11 1986

A TORNADO WATCH IN EFFECT FOR THE WEST AND CENTRAL PARTS OF INDIANA TILL
9 PM EST WILL BE REPLACED BY A NEW WATCH BY 530 PM EST THIS AFTERNOON.

AT 515 PM EST...VERY STRONG THUNDERSTORMS WERE OVER PART OF WEST CENTRAL
INDIANA.

THE MOST INTENSE THUNDERSTORMS WERE NEAR BRAZIL...BETWEEN ROCKVILLE AND
GREENCASTLE...AND INCLUDING THE NORTH PART OF PUTNAM COUNTY. THESE
STORMS WERE FROM 15 MILES EAST OF TO 50 MILES NORTHEAST OF TERRE HAUTE.

MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR.
.
THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY DOWNPOURS...
STRONG GUSTY WINDS AND DANGEROUS LIGHTNING.
.
PEOPLE IN NORTHERN CLAY AND PUTNAM COUNTIES...AS WELL AS WEST AND
CENTRAL INDIANA SHOULD REMAIN ALERT FOR THE POSSIBILITY OF SEVERE
WEATHER.
STEIGERWALDT
Special weather statement, Jun 11, 6:38 PM EST, 1 hour 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
638 PM EST WED JUN 11 1986

A TORNADO WATCH IS IN EFFECT FOR PARTS OF EASTERN INDIANA UNTIL
MIDNIGHT...

AT 635 PM EST...THE STRONGEST THUNDERSTORM IN CENTRAL INDIANA WAS
APPROACHING THE CITY OF LAWRENCE IN MARION COUNTY.

THIS STORM WILL PRODUCE STRONG WINDS...HEAVY DOWNPOURS AND FREQUENT
LIGHTNING OVER NORTHEAST MARION COUNTY UNTIL IT MOVES INTO NORTHWEST
HANCOCK COUNTY ARpOUND 650 PM EST.
STEIGERWALDT
Special weather statement, Jun 11, 7:11 PM EST, 1 hour 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
710 PM EST WED JUN 11 1986

...A TORNADO WATCH REMAINS IN EFFECT FOR PARTS OF EASTERN INDIANA UNTIL
MIDNIGHT...

AT 705 PM EST...STRONG THUNDERSTORMS HAD MOVED MOSTLY TO THE EAST OF
INDIANAPOLIS.

THE 10 MILE WIDE LINE OF THUNDERSTORMS EXTENDED FROM 45 MILES NORTHEAST
OF INDIANAPOLIS ON THE TIPTON..MADISON COUNTY LINE...TO 20 MILES
NORTHEAST OF DOWNTOWN INDIANAPOLIS.

ANOTHER LINE OF STRONG THUNDERSTORMS WAS OVER WEST CENTRAL INDIANA.
THIS 10 MILE WIDE LINE EXTENDED FROM 10 MILES EAST OF LAFAYETTE TO 15
MILES EAST OF TERRE HAUTE TO NEAR VINCENNES.
.
BOTH LINES WERE MOVING EAST AT 25 MILES AN HOUR.
.
PEOPLE ACROSS THE CENTRAL TWO THIRDS OF INDIANA SHOULD REMAIN ALERT
FOR POSSIBLE SEVERE WEATHER ESPECIALLY THIS EVENING.
STEIGERWALDT
Special weather statement, Jun 11, 7:31 PM EST, 59 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
730 PM EST WED JUN 11 1986

...A TORNADO WATCH REMAINS IN EFFECT FOR PARTS OF EASTERN INDIANA UNTIL
MIDNIGHT...

AT 725 PM EST...A 15 MILE WIDE LINE OF VERY STRONG THUNDERSTORMS WAS
OVER THE WEST PART OF INDIANA.

THE LINE EXTENDED FROM 15 MILES EAST OF LAFAYETTE TO 15 MILES EAST OF
TERRE HAUTE TO NEAR VINCENNES ON THE WABASH RIVER.

THE MOST INTENSE THUNDERSTORMS WERE FROM 20 TO 45 MILES SOUTH OF
LAFAYETTE...25 MILES EAST OF TERRE HAUTE...AND 20 MILES NORTH OF
VINCENNES.
.
THE LINE WAS MOVING EAST AT 25 MILES AN HOUR.

THE LINE OF VERY STRONG THUNDERSTORMS WILL MOVE ACROSS THE CITIES OF
KIRKLIN...STILESVILLE...QUINCY AND LYONS BY 745 PM EST...AND ACROSS
TIPTON...ZIONSVILLE...THE WEST PART OF INDIANAPOLIS...MOORESVILLE AND
MARTINSVILLE BY 815 PM EST.

HEAVY RAIN...FREQUENT LIGHTNING AND STRONG WINDS WILL ACCOMPANY THE
LINE OF THUNDERSTORMS.

LISTEN TO THIS SAME SOURCE FOR ADDITIONAL WEATHER INFORMATION.
STEIGERWALDT
Special weather statement, Jun 11, 8:12 PM EST, 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
810 PM EST WED JUN 11 1986

...A TORNADO WATCH REMAINS IN EFFECT FOR PARTS OF EASTERN INDIANA UNTIL
MIDNIGHT...

AT 805 PM EST...A 10 MILE WIDE LINE OF VERY STRONG THUNDERSTORMS
EXTENDED FROM BETWEEN FRANKFORT AND TIPTON...THROUGH PLAINFIELD TO 10
MILES EAST OF SPENCER IN CENTRAL INDIANA.

THE MOST INTENSE THUNDERSTORM WAS OVER NORTHERN MORGAN NEAR MOORESVILLE
...OR 15 MILES SOUTHWEST OF DOWNTOWN INDIANAPOLIS.

OTHER VERY STRONG THUNDERSTORMS WERE 5 MILES EAST OF LEBANON AND NEAR
BROWNSBURG...OR FROM 15 TO 20 MILES NORTHWEST OF INDIANAPOLIS.
.
THE LINE WAS MOVING EAST AT 30 MILES AN HOUR.

VERY HEAVY DOWNPOURS...FREQUENT LIGHTNING...AND STRONG GUSTY WINDS WILL
OCCUR WITH THE PASSAGE OF THIS LINE.

THE LINE WILL MOVE ACROSS THE CITIES OF NOBLESVILLE...INTO THE WEST
PART OF INDIANAPOLIS...AND ACROSS WHITELAND AND GREENWOOD BY ABOUT 830
PM EST.

BRIEF FLOODING OF SOME ROADS AND LOW LYING AREAS IS ALSO POSSIBLE
ESPECIALLY IN URBAN AREAS.
STEIGERWALDT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 8:45 PM ESTSevere Thunderstorm WarningINDShelby30 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.