Alert archive / Indiana / Flash Flood Warnings in 1989

Flash Flood Warning 61, NWS Indianapolis, IN

July 24, 1989Hendricks County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Jul 24, 1989, 4:40 PM EST for Hendricks County, Indiana. It was in force for 80 min.

The area

The counties it named.

The facts

Issued
Jul 24, 1989, 4:40 PM EST (21:40 UTC)
Expired
Jul 24, 1989, 6:00 PM EST
In force
80 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Hendricks 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 12:00Z, 9.7 hours before the alert went out and 198 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 1989-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1417 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 1989-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
1417 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
874 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
35 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 242141
FFWIND
INC063-242300-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
440 PM EST MON JUL 24 1989
 
THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  600 PM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN CENTRAL INDIANA
          ...HENDRICKS
 
A WEATHER SERVICE EMPLOYEE ESTIMATED ABOUT 3 INCHES OF RAIN IN THE
TOWN OF CLERMONT IN WESTERN MARION COUNTY BETWEEN 330 PM AND 430 PM
EST.
 
RADAR AT 440 PM EST INDICATED THAT THIS THUNDERSTORM WAS MOVING
NORTHWEST INTO HENDRICKS COUNTY.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL ONE...ON FOOT.
HENDRICKSON

What forecasters said that day

The local office's own words before this flash flood 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, Jul 24, 2:40 PM EST, 2 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
240 PM EST MON JUL 24 1989

STRONG THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED TO DEVELOP
OVER THE SOUTHERN AND THE EASTERN HALF OF INDIANA

AT 225 PM EST RADAR SHOWED TWO STORMS ABOUT 20 MILES EAST OF
INDIANAPOLIS. ONE WAS 10 MILES NORTH OF GREENFIELD WHILE THE
OTHER WAS OVER GREENFIELD ITSELF.

THESE STORMS WERE MOVING VERY SLOWLY NORTHWEST AT 5 TO 10 MILES
AN HOUR. PERSONS IN THE GREENFIELD...FORTVILLE AND PHILADELPHIA
AREAS SHOULD BE PREPARED FOR HEAVY RAINS...FREQUENT LIGHTNING
AS WELL AS STRONG GUSTY WINDS.

DO NOT ALLOW CHILDREN TO PLAY IN FLOODED AREAS AND DO NOT DRIVE
THROUGH FLOODED ROADS.

OTHE@R SHOWERS AND THUNDERSTORMS WERE FROM MARION SOUTH TO NEAR COLUMBUS
...AND THEN WEST TO BLOOMINGTON.

ALL OF THE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHWEST AT 5 TO
10 MILES AN HOUR.

GERY
Special weather statement, Jul 24, 3:41 PM EST, 59 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
335 PM EST MON JUL 24 1989

STRONG THUNDERSTORMS WITH VERY HEAVY RAIN WERE OVER CENTRAL INDIANA.

AT 330 PM EST RADAR SHOWED ONE THUNDERSTORM WITH VERY HEAVY RAIN
20 MILES SOUTHEAST OF INDIANAPOLIS EAR THE TOWN OF FRANKLIN.

ANOTHER STORM WITH HEAVY RAIN WAS 25 MILES NORTHEAST OF INDIANAPOLIS
TO THE WEST OF ANDERSON. BOTH OF THESE STORMS ARE CAPABLE OF PRODUCING
VERY HEAVY RAINS AND GUSTY WINDS.

PERSONS IN THE AREAS AROUND THE TOWNS OF FRANKLIN...NEW WHITELAND AND
MOUNT PLEASANT IN JOHNSON COUNTY AND IN THE AREAS OF LAPEL AND
FRANKTON TO THE WEST AND NORTHWEST OF ANDERSON SHOULD PREPARE FOR
HEAVY RAINS..FREQUENT LIGHTNING AS WELL AS STRONG GUSTY WINDS.

DO NOT ALLOW CHILDREN TO PLAY IN FLOODED AREAS...DO NOT DRIVE THROUGH
FLOODED STREETS.

OTHER SCATTERED SHOWERS AND THUNDERSTORMS WERE SOUTH OF A LINE FROM
MARION THROUGH INDIANAPOLIS TO NEAR TERRE HAUTE.

ALL OF THE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHWEST AT 5 TO
10 MILES AN HOUR.

GERY

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 3:55 PM ESTFlash Flood WarningINDJohnson, Marion2 hr
Jul 24, 4:03 PM ESTSevere Thunderstorm WarningINDMarion42 min

Nearby

Flash Flood Warnings in Indiana, 1989Every flash flood warning in 1989

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.