Alert archive / Indiana / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 56, NWS Indianapolis, IN

June 15, 1987Marion County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 15, 1987, 3:44 PM EST for Marion County, Indiana. It was in force for 31 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: Jun 15, 1987, 3:44 PM EST (20:44 UTC)
Expired: Jun 15, 1987, 4:15 PM EST
In force: 31 min
Issued by: NWS Indianapolis, IN
Area: Whole counties

County Marion 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

Time	Report	Where	Remark
Jun 15, 4:10 PM EST	Hail 1.25	Marion, IN
Jun 15, 4:22 PM EST	Hail 1	Marion, 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 12:00Z, 8.7 hours before the alert went out and 166 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 385 J/kg
Mixed-layer CIN: -170 J/kg
Mixed-layer LCL: 1419 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 42 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 152049 COR
SVRIND
INC097-152042-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION...
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
344 PM EST MON JUN 15 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 415 PM EST FOR THE FOLLOWING COUNTY OF

CENTRAL INDIANA... NORTH MARION

AT 342 PM EST INDIANAPOLIS RADAR SHOWED A SEVERE THUNDERSTORM OVER
HAMILTON...MARION COUNTY LINE MOVING TO THE SOUTHEAST AT 5 MPH.
THE CITY OF LAWRENCE IS IN THE PATH OF THIS STORM.


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

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH
...DESTRUCTIVE HAIL...DEADLY LIGiHTNING AND VERY HEAVY RAIN.  FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM OF YOUR HOME OR BUSINESS.

PRZYBYLINSKI

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 2:59 PM EST	Severe Thunderstorm Warning	IND	Hamilton	31 min
Jun 15, 3:19 PM EST	Severe Thunderstorm Warning	IND	Madison, Tipton	41 min
Jun 15, 3:33 PM EST	Severe Thunderstorm Warning	IND	Delaware	42 min
Jun 15, 4:15 PM EST	Severe Thunderstorm Warning	IND	Marion	45 min
Jun 15, 4:42 PM EST	Severe Thunderstorm Warning	IND	Hendricks	48 min
Jun 15, 4:54 PM EST	Severe Thunderstorm Warning	IND	Parke	36 min
Jun 15, 5:08 PM EST	Tornado Warning	IND	Hendricks	27 min
Jun 15, 5:48 PM EST	Severe Thunderstorm Warning	IND	Vermillion	42 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1987 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.