Alert archive / Indiana / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 39, NWS Indianapolis, IN

May 7, 1986Decatur County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at May 7, 1986, 2:55 PM EST for Decatur County, Indiana. It was in force for 25 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
May 7, 1986, 2:55 PM EST (19:55 UTC)
Expired
May 7, 1986, 3:20 PM EST
In force
25 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Decatur 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
May 7, 3:10 PM ESTHail 1.75Decatur, IN
May 7, 3:10 PM ESTHail 1.75Decatur, 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, 7.9 hours before the alert went out and 130 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 1986-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 803 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 1986-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
803 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
896 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
100 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 071956
SVRIND
INC031-072020-

BULLETIN...IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
255 PM EST WED MAY 7 1986


THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 320 PM EST FOR PERSONS IN THE FOLLOWING

EAST CENTRAL INDIANA COUNTY OF  NORTH DECATUR.

A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS AND LARGE
HAIL WAS JUST NORTH OF GREENSBURG INDIANA AT 254PM EST. THIS STORM
WAS MOVING SOUTHEAST AT 30 MPH.

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.

RELAY REPORTS OF SEVERE WEATHER TO THE POLICE FOR RELAY TO THE
NATIONAL WEATHER SERVICE.
EDWARDS

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 7:22 PM ESTSevere Thunderstorm WarningINDTippecanoe, White28 min
May 6, 8:05 PM ESTSevere Thunderstorm WarningINDVermillion, Warren30 min
May 6, 8:10 PM ESTSevere Thunderstorm WarningINDFountain30 min
May 6, 8:55 PM ESTSevere Thunderstorm WarningINDHendricks30 min
May 6, 9:00 PM ESTSevere Thunderstorm WarningINDBoone30 min
May 6, 9:19 PM ESTSevere Thunderstorm WarningINDMarion26 min
May 6, 9:25 PM ESTSevere Thunderstorm WarningINDHancock, Shelby30 min
May 6, 9:25 PM ESTSevere Thunderstorm WarningINDJohnson30 min
May 6, 10:04 PM ESTSevere Thunderstorm WarningINDHancock21 min
May 6, 10:13 PM ESTSevere Thunderstorm WarningINDHenry, Rush32 min
May 6, 10:23 PM ESTSevere Thunderstorm WarningINDFayette32 min
May 6, 10:27 PM ESTSevere Thunderstorm WarningINDWayne33 min
May 7, 3:45 PM ESTSevere Thunderstorm WarningINDTippecanoe45 min
May 7, 4:18 PM ESTSevere Thunderstorm WarningINDBoone, Montgomery42 min
May 7, 4:33 PM ESTSevere Thunderstorm WarningINDParke42 min
May 7, 5:00 PM ESTSevere Thunderstorm WarningINDHendricks, Marion45 min
May 7, 5:18 PM ESTSevere Thunderstorm WarningINDJohnson42 min
May 7, 5:30 PM ESTTornado WarningINDJohnson, Marion30 min
May 7, 6:05 PM ESTSevere Thunderstorm WarningINDShelby25 min
May 7, 6:10 PM ESTTornado WarningINDRush35 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.