Alert archive / Indiana / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 55, NWS Indianapolis, IN

June 15, 1987Delaware County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 15, 1987, 3:33 PM EST for Delaware County, Indiana. It was in force for 42 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 15, 1987, 3:33 PM EST (20:33 UTC)
Expired
Jun 15, 1987, 4:15 PM EST
In force
42 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Delaware 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 15, 3:39 PM ESTHail 0.75Delaware, 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, 8.6 hours before the alert went out and 108 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 12:00Z on 1987-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 385 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 12:00Z on 1987-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
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 152034
SVRIND
INC035-152115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
333 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
 
EAST CENTRAL INDIANA... DELAWARE
                                                                         
AT 330 PM EST RADAR SHOWED A SEVERE THUNDERSTORM OVER THE CITY OF 
MUNCIE.  
 
THIS STORM MOVING EAST AT 5 TO 10 MILES AN HOUR. 
^ 
 
HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS
WHERE WATER COVERS THE ROAD.
 
GERY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 2:59 PM ESTSevere Thunderstorm WarningINDHamilton31 min
Jun 15, 3:19 PM ESTSevere Thunderstorm WarningINDMadison, Tipton41 min
Jun 15, 3:44 PM ESTSevere Thunderstorm WarningINDMarion31 min
Jun 15, 4:15 PM ESTSevere Thunderstorm WarningINDMarion45 min
Jun 15, 4:42 PM ESTSevere Thunderstorm WarningINDHendricks48 min
Jun 15, 4:54 PM ESTSevere Thunderstorm WarningINDParke36 min
Jun 15, 5:08 PM ESTTornado WarningINDHendricks27 min
Jun 15, 5:48 PM ESTSevere Thunderstorm WarningINDVermillion42 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.