Alert archive / Indiana / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 98, NWS Indianapolis, IN

July 6, 1987Pulaski County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 6, 1987, 7:11 PM EST for Pulaski County, Indiana. It was in force for 34 min.

The area

The counties it named.

The facts

Issued
Jul 6, 1987, 7:11 PM EST (00:11 UTC)
Expired
Jul 6, 1987, 7:45 PM EST
In force
34 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Pulaski 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

Dayton/James M C, OH (KDAY), launched 00:00Z, 0.2 hours before the alert went out and 247 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 1987-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2626 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 1987-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 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
2626 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
695 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
155 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 KSBN 070011
SVRSBN
INC131-070045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SOUTH BEND IN
711 PM EST MON JUL 6 1987

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

NORTH CENTRAL INDIANA...SOUTHERN PULASKI

AT 7PM EST RADAR AT SOUTH BEND SHOWED A VERY LARGE DANGEROUS
THUNDERSTORM ENTERING SOUTHWESTERN PULASKI COUNTY IN NORTHWEST
INDIANA. THE THUNDERSTORM WAS DRIFTING SLOWLY EAST TOWARD
WINAMAC INDIANA WHICH IS 40 MILES SOUTH OF SOUTH BEND.

THERE WERE REPORTS OF TORNADOES WITHIN THIS CLUSTER OF THUNDER-
STORMS WITHIN THE LAST HOUR.

REMEMBER THESE STORMS CAN AND OCCASIONALLY TO PRODUCE A TORNADO WITH
LITTLE OR NO ADVANCE WARNING.

REPORT SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY AND ASK
THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

 JH

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 6, 1:21 PM EST, 5 hours 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
120 PM EST MON JUL 6 1987

...THERE IS A SEVERE THUNDERSTORM WATCH FOR SOUTHERN INDIANA UNTIL
   500 PM EST...

THE WATCH IS SOUTH OF A LINE FROM 10 MILES NORTH OF VINCENNES TO 45
MILES NORTHEAST OF LOUISVILLE. DANGEROUS LIGHTNING...LARGE HAIL AND
DAMAGING WINDS ARE POSSIBLE IN AND CLOSE TO THE WATCH AREA. HEAVY
RAINFALL IS ALSO POSSIBLE.

AT 115 PM...THUNDERSTORMS WERE OVER SOUTHWEST INDIANA FROM AROUND
THE ILLINOIS STATE LINE NEAR WESTPHALIA...TO 10 MILES WEST OF BEDFORD
NEAR NEWBERRY AND ODON.

STORMS WERE OVER SOME OF THE AREA THAT RECEIVED HEAVY RAINFALL
LATE SATURDAY AFTERNOON. HEAVY RAINFALL IS POSSIBLE THIS AFTERNOON AND
COULD LEAD TO FLOODING OF LOW AND FLOOD PRONE AREAS.

KENYON
Special weather statement, Jul 6, 2:21 PM EST, 4 hours 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
219 PM EST MON JUL 6 1987

A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR LAWRENCE COUNTY UNTIL
250 PM...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR SOUTHERN INDIANA
UNTIL 5 PM...AND A FLASH FLOOD WATCH IS IN EFFECT FOR PART OF WEST
CENTRAL...SOUTHWEST AND SOUTH CENTRAL INDIANA FOR THIS AFTERNOON AND
EVENING.

AT 205 PM EST RADAR SHOWED A LINE OF VERY STRONG THUNDERSTORMS
FROM 30 MILES SOUTH OF TERRE HAUTE TO 10 MILES WEST OF SEYMOUR.
THE MOST THREATENING STORM WAS 5 MILES WEST OF BEDFORD.

THESE STORMS ARE PRODUCING TORRENTIAL RAINS OVER ALREADY RAIN-SOAKED
GROUND. PEOPLE ALONG SMALL STREAMS AND CREEKS SHOULD BE ALERT TO
RAPIDLY RISING WATER. HEAVY RAINS WILL COVER ROADS SO MOTORISTS
SHOULD DRIVE WITH EXTREME CAUTION. DO NOT ATTEMPT TO CROSS FLOWING
WATER.

SOME OF THE STORMS MAY ALSO PRODUCE DAMAGING WINDS...SMALL HAIL AND
FREQUENT DANGEROUS LIGHTNING.

ALLSOPP
Special weather statement, Jul 6, 4:05 PM EST, 3 hours 6 minutes before
SPECIAL WEATHER STATEMENT...SUMMARY OF WATCHES IN EFFECT FOR INDIANA...
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
403 PM EST MON JUL 6 1987

HERE IS A SUMMARY OF WEATHER WATCHES NOW IN EFFECT FOR INDIANA.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR CENTRAL AND SOUTHERN
INDIANA UNTIL 900 PM EST. SOME CITIES INCLUDED ARE TERRE HAUTE...
INDIANAPOLIS...RICHMOND...BLOOMINGTON...COLUMBUS...BEDFORD...VERSAILLES
...SALEM AND NEW ALBANY.

A FLASH FLOOD WATCH IS IN EFFECT OVER PART OF WEST CENTRAL...SOUTHWEST
AND SOUTH CENTRAL INDIANA FOR THE REST OF THIS AFTERNOON AND EVENING.
SOME CITIES INCLUDED ARE BLOOMINGTON...BEDFORD...COLUMBUS...SULLIVAN
AND VINCENNES.

A FLASH FLOOD WARNING REMAINS IN EFFECT FOR GREENE COUNTY OF WEST
CENTRAL INDIANA UNTIL 530 PM. THIS MEANS FLASH FLOODING OF SMALL
STREAMS AND CREEKS AS WELL AS SOME ROADS AND LOW LYING AREAS IS
IMMINENT OR OCCURING IN GREENE COUNTY.

STAY TUNED TO THIS SOURCE FOR ADDITIONAL STGATEMENTS OR WARNINGS.

ALLSOPP
Special weather statement, Jul 6, 4:44 PM EST, 2 hours 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
445 PM EST MON JUL 6 1987

SEVERE THUNDERSTORM WATCHES ARE IN EFFECT FOR CENTRAL AND SOUTHERN
INDIANA UNTIL 900 PM EST THIS EVENING. SOME CITIES INCLUDED IN THE
WATCH ARE TERRE HAUTE INDIANAPOLIS BLOOMINGTON COLUMBUS AND BEDFORD.

AT 422 PM EST RADAR AT INDIANAPOLIS SHOWED VERY STRONG THUNDERSTORMS
IN A LINE FROM OWENSBURG IN GREENE COUNTY TO NEAR BEDFORD AND TO
CROTHERVILLE IN JACKSON COUNTY AND LEXINGTON INDIANA WHICH IS 25 NORTH
OF LOUISVILLE KENTUCKY.

THESE STORMS WERE PRODUCING TORRENTIAL RAINS OVER ALREADY RAIN-SOAKED
GROUND. PEOPLE ALONG SMALL STREAMS AND CREEKS SHOULD BE ALERT TO
RAPIDLY RISING WATER. HEAVY RAINS WILL COVER ROADS SO MOTORISTS SHOULD
DRIVE WITH EXTREME CAUTION. DO NOT ATTEMPT TO CROSS FLOWING WATER.

SOME OF THE HEAVIER STORMS MAY ALSO PRODUCE DAMAGING WINDS HAIL AND
DANGEROUS LIGHTNING AS IT MOVES EAST AT 30 MILES AN HO^UR. IF THREATENING
CONDITIONS ARE SIGHTED MOVE TO A SAFE PLACE AT ONCE. REPORTS SEVERE
WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO THE
NATIONAL WEATHER SERVICE.

KOLDITZ
Special weather statement, Jul 6, 5:30 PM EST, 1 hour 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
530 PM EST MON JUL 6 1987

SEVERE THUNDERSTORM WATCHES ARE IN EFFECT FOR CENTRAL AND SOUTHERN
INDIANA UNTIL 900 PM EST AND FOR SOUTHWEST INDIANA UNTIL 10 PM EST.
SOME CITTIES INCLUDED ARE TERRE HAUTE INDIANAPOLIS BLOOMINGTON
COLUMBUS AND BEDFORD.

A FLASH FLOOD WATCH CONTINUES IN EFFECT FOR PARTS OF WEST CENTRAL...
SOUTHWEST AND SOUTH CENTRAL INDIANA INTO THE EVENING. SOME CITIES
INCLUDED ARE BLOOMINGTON...BEDFORD...COLUMBUS...SULLIVAN AND VINCENNES.

THE FLASH FLOOD WARNING FOR GREEN COUNTY OF WEST CENTRAL INDIANA HAS
EXPIRED AT 530 PM EST.
A SEVERE THUNDERSTORM WARNING ISSUED AT 512 PM EST IS IN EFFECT UNTIL
550 PM EST ALONG THE EXTREME SOUTHERN BORDER OF TIPPECANOE COUNTY AND
EXTREME NORTHERN MONTGOMERY COUNTY. MOVEMENT WAS SLIGHTLY SOUTH OF EAST
AND THE TOWN OF LINDEN MAY FEEL THE EFFECTS OF THE STORM AT 530 PM EST.
.
TORRENTIAL RAINS...DAMAGING WINDS AND HAIL MAY ACCOMPANY THE STORM
AS IT PASSES THROUGH.

IF THREATENING CONDITIONS ARE SIGHTED MOVE TO A SAFE PLACE AT ONCE.
REPORT SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY FOR RELAY
TO THE NATIONAL WEATHER SERVICE.

KOLDITZ
Special weather statement, Jul 6, 6:05 PM EST, 1 hour 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
600 PM EST MON JUL 6 1987

THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHERN TIPPECANOE AND
EXTREME NORTHERN MONTGOMERY COUNTIES EXPIRED AT 550 PM EST THIS EVENING.

THE HEAVIEST PART OF THE THUNDERSTORM WENT JUST SOUTH OF LINDEN. AT 539
PM EST AMATEUR RADIO OPERATORS REPORTED A FUNNEL CLOUD ALOFT 2 MILES
SOUTH OF LINDEN. BY 543 PM THE FUNNEL WENT BACK INTO THE CLOUDS. AT
555 PM RADAR AT INDIANAPOLIS SHOWED THE STORM DECREASING IN INTENSITY.
STATE POLICE AT LAFAYETTE REPORTED TORRENTIAL RAINS AND VIVID LIGHTNING
DISPLAY IN THE LINDEN AREA. NO FLOODING OCCURRED.

THE STORM WAS MOVING EAST AT 15 TO 20 MILES AN HOUR TOWARD COLFAX IN
CLINTON COUNTY. TORRENTIAL RAINS...STRONG GUSTY WINDS AND DANGEROUS
LIGHTNING MAY ACCOMPANY THIS STORM AS IT TRACKS EAST.
.
IF THREATENING CONDITIONS ARE SIGHTED MOVE TO A SAFE PLACE AT ONCE.
REPORT SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY FOR RELAY
TO THE NATIONAL WEATHER SERVICE.

KOLDITZ

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 7:20 PM ESTSevere Thunderstorm WarningINDBenton, White30 min
Jul 6, 7:33 PM ESTSevere Thunderstorm WarningINDClay, Vigo27 min
Jul 6, 7:42 PM ESTSevere Thunderstorm WarningINDParke33 min
Jul 6, 7:52 PM ESTSevere Thunderstorm WarningINDCarroll, Tippecanoe38 min
Jul 6, 8:35 PM ESTFlash Flood WarningINDClay, Vigo2 hr
Jul 6, 8:35 PM ESTFlash Flood WarningINDOwen2 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 1987Every severe thunderstorm warning 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.