Alert archive / Indiana / Flash Flood Warnings in 1986

Flash Flood Warning 9, NWS Indianapolis, IN

October 3, 1986Johnson County, Morgan County, Shelby County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Oct 3, 1986, 11:55 PM EST for Johnson County, Morgan County, Shelby County, Indiana. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Oct 3, 1986, 11:55 PM EST (04:55 UTC)
Expired
Oct 4, 1986, 6:00 AM EST
In force
6 hr
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Johnson County, IN, Morgan County, IN, Shelby 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, 4.9 hours before the alert went out and 170 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 1986-10-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 351 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 1986-10-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 158 square meters per square second.1939587897Sfc1 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
351 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
531 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
158 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KIND 040457
FFWIND
INC045-107-011-057-095-035-135-165-121-133-063-097-059-065-177-
167-021-119-109-081-145-139-041-161-041100-

BULLETIN...EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1155 PM EST FRI OCT 3 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE
UNTIL 6 AM EST SATURDAY MORNING FOR MOST OF CENTRAL INDIANA.

INCLUDED IN THE WARNING ARE FOUNTAIN...MONTGOMERY...BOONE...HAMILTON...
MADISON...DELAWARE...VERMILLION...PARKE...PUTNAM...HENDRICKS...MARION...
HANCOCK...HENRY...RUSH...FAYETTE...UNION...VIGO...CLAY...OWEN...
MORGAN...JOHNSON...SHELBY...RANDOLPH...WAYNE...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT. TAKE NECESSARY
PRECAUTIONS AGAINST FLOODING IMMEDIATELY.

SEEK SAFETY BEFORE FLOWING WATER BLOCKS YOUR ESCAPE ROUTE. STAY AWAY
FROM FLOODED STREAMS...STORM DRAINS AND VIADUCTS.

REPORT SEVERE FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY
TO THQE NATIONAL WEATHER SERVICE.

KOLDITZ/GERY

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 3, 11:55 PM ESTFlash Flood WarningINDHendricks, Montgomery6 hr
Oct 3, 11:55 PM ESTFlash Flood WarningINDDelaware6 hr
Oct 3, 11:55 PM ESTFlash Flood WarningINDFountain, Vermillion6 hr
Oct 3, 11:55 PM ESTFlash Flood WarningINDRush6 hr
Oct 3, 11:55 PM ESTFlash Flood WarningINDBoone, Hamilton, Hancock, Madison, Marion6 hr
Oct 3, 11:55 PM ESTFlash Flood WarningINDClay, Owen, Parke, Putnam, Vigo6 hr
Oct 3, 11:55 PM ESTFlash Flood WarningINDFayette, Henry, Randolph, Union, Wayne6 hr

Nearby

Flash Flood Warnings in Indiana, 1986Every flash flood 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; the sounding from the Mesonet's radiosonde archive.