Alert archive / Indiana / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 62, NWS Indianapolis, IN

June 21, 1987LaPorte County, Saint Joseph County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 21, 1987, 8:38 PM CDT for LaPorte County, Saint Joseph County, Indiana. It was in force for 22 min.

The area

The counties it named.

The facts

Issued
Jun 21, 1987, 8:38 PM CDT (01:38 UTC)
Expired
Jun 21, 1987, 9:00 PM CDT
In force
22 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties LaPorte County, IN, Saint Joseph 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, 1.6 hours before the alert went out and 270 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 1987-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 27 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 1987-06-22The 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
27 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1226 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 KSBN 220138
SVRSBN
INC091-141-220200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SOUTH BEND IN
838 PM EST SUN JUN 21 1987

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

NORTH CENTRAL INDIANA...EASTERN LAPORTE AND SOUTHERN ST JOSEPH

AT ABOUT 820PM EST LAPORTE COUNTY SHERRIF REPORTED A SEVERE
THUNDERSTORM 15 MILES SOUTHWEST OF SOUTH BEND NEAR STATE ROAD 4.

FUNNEL CLOUDS HAVE BEEN REPORTED WITH THIS STORM.

THE STORM WAS MOVING SOUTHEAST AT ABOUT 20 MILES AN HOUR.

THIS SLOW MOVING THUNDERSTORM MAY CAUSE FLOODING OF SMALL STREAMS AND
UNDERPASSES.

THIS IS A DANGEROUS STORM. TAKE COVER IMMEDIATELY.

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.


CEK

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 21, 7:18 PM CDT, 1 hour 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
717 PM EST SUN JUN 21 1987

STRONG THUNDERSTORMS WERE MOVING INTO THE INDIANAPOLIS METROPOLITAN
AREA AT 715 PM. THESE THUNDERSTORMS WILL PRODUCE TORRENTIAL RAINS
AND BRIEF STRONG GUSTY WINDS AND DANGEROUS LIGHTNING AS THEY MOVE
THROUGH THE CITY BETWEEN 715 AND 800 PM THIS EVENING.

STRONG WINDS MAY SNAP SOME TREE LIMBS AND VERY HEAVY RAINS MAY
FLOOD SOME CITY ROADS AND LOW LYING AREAS. MOTORISTS SHOULD BE
ALERT TO POOR VISIBILITIES AND STANDING WATER ON STREETS.

ALLSOPP
NORTHEAST AT 20 MPH.
HENDRICKSON
Special weather statement, Jun 21, 8:33 PM CDT, 5 minutes before
SPECIAL WEATHER STATEMENT AND PRECIPITATION SUMMARY
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
830 PM EST SUN JUN 21 1987

AT 825 PM EST...SCATTERED THUNDERSTORMS CONTAINING VERY HEAVY RAIN WERE
OVER CENTRAL INDIANA.

A NARROW BAND OF VERY STRONG THUNDERSTORMS ABOUT 12 MILES WIDE EXTENDED
FROM NEAR BLOOMINGTON TO 40 MILES WEST OF BLOOMINGTON.

THESE THUNDERSTORMS WILL PRODUCE TORRENTIAL DOWNPOURS...GUSTY WINDS AND
LOTS OF LIGHTNING AS THEY MOVE THROUGH THE BLOOMINGTON AREA. ALSO...
BRIEF FLOODING OF SOME STREETS AND UNDERPASSES WILL BE LIKELY IN
BLOOMINGTON.

OTHER STRONG STORMS 25 MILES EAST AND SOUTHEAST OF DOWNTOWN INDIANAPOLIS
OVER EASTERN HANCOCK AND NORTHEAST SHELBY COUNTIES WILL MOVE THROUGH
HENRY AND RUSH COUNTIES BETWEEN 830 AND 915 PM EST. FREQUENT LIGHTNING
VERY HEAVY RAIN AND GUSTY WINDS CAN BE EXPECTED IN THESE AREAS.
.
THESE PARTICULAR STORMS PRODUCED NEARLY AN INCH OF RAIN AT THE
INDIANAPOLIS AIRPORT /0.96/ AND WIND GUSTS TO 33 MILES AN HOUR AS
THEY MOVED THROUGH BETWEEN 715 AND 745 PM EST.

ANOTHER STRONG STORM WAS 25 MILES SOUTHWEST OF LAFAYETTE.

MOVEMENT WAS EAST AT 25 MILES AN HOUR.
STEIGERWALDT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 4:44 PM CDTSevere Thunderstorm WarningINDGibson31 min
Jun 22, 6:02 PM CDTSevere Thunderstorm WarningINDVanderburgh28 min

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.