Alert archive / Indiana / Flash Flood Warnings in 1989

Flash Flood Warning 74, NWS Indianapolis, IN

September 1, 1989Brown County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Sep 1, 1989, 9:38 AM EST for Brown County, Indiana. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Sep 1, 1989, 9:38 AM EST (14:38 UTC)
Expired: Sep 1, 1989, 11:45 AM EST
In force: 2 hr
Issued by: NWS Indianapolis, IN
Area: Whole counties

County Brown 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, 2.6 hours before the alert went out and 191 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: 1296 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 615 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 9.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 011440
FFWIND
INC013-011645-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
938 AM EST FRI SEP 1 1989
 
THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1145 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH CENTRAL INDIANA
          ...BROWN
 
THUNDERSTORMS WITH FLOODING RAINS WERE OVER BROWN COUNTY...ABOUT 45
MILES SOUTH OF INDIANAPOLIS AT 940 AM EST. FLOODING WAS REPORTED IN
NASHVILLE. FLOODING OF CREEKS AND STREAMS AND LOW AREAS CAN BE
EXPECTED.
 
REPORT FLOODING TO THE POLICE FOR RELAY TO THE NATIONAL WEATHER
SERVICE.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS 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.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROwUND.
EDWARDS

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, Sep 1, 4:10 AM EST, 5 hours 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
410 AM EST FRI SEP 1 1989

THE SEVERE THUNDERSTORM WATCH FOR NORTHERN INDIANA HAS EXPIRED. HOWEVER
THE FLASH FLOOD WATCH CONTINUES FOR PORTIONS OF NORTHERN INDIANA.

AT 415 AM FRIDAY MORNING RADAR INDICATED STRONG THUNDERSTORMS WITH
HEAVY RAIN ACROSS NORTHERN INDIANA TO THE NORTH OF A CHAMPAIGN ILLINOIS
TO MUNCIE LINE. THESE THUNDERSTORMS WERE MOVING TO THE EASTSOUTHEAST
AT 25 MILES AN HOUR AND WILL MOVE ACROSS CENTRAL PORTIONS OF INDIANA
BY 600 AM THIS FRIDAY MORNING.
GIBBS

Special weather statement, Sep 1, 5:15 AM EST, 4 hours 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
515 AM EST FRI SEP 1 1989

FLASH FLOOD WATCH CONTINUES FOR PORTIONS OF NORTHERN INDIANA UNTIL
800 AM.

AT 515 AM RADAR INDICATED A BAND OF STRONG THUNDERSTORMS FROM
LAFAYETTE EASTWARD TO THE OHIO BORDER WITH MOVEMENT TO THE
EASTSOUTHEAST AT 20 MILES AN HOUR.

HEAVY RAINFALL IS LIKELY WITH THESE STORMS. AN OBSERVER AT BURLINGTON
IN CARROLL COUNTY REPORTING 2.82 INCHE)S OF RAIN BY 500 AM THIS FRIDAY
MORNING. THE HEAVY RAINFALL AREA WILL MOVE OVER SECTIONS OF CENTRAL
INDIANA BY 800 AM WITH LOCAL FLOODING IN HEAVIER STORMS POSSIBLE.
GIBBS

Local storm report, Sep 1, 8:17 AM EST, 1 hour 21 minutes before

STORM REPORT...PRELIMINARY
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
811 AM EST FRI SEP 1 1989

APPROXIMATELY 400 AM EST A SEVERE THUNDERSTORM MOVED ACROSS
PULASKI AND FULTON COUNTIES OF NORTH CENTRAL INDIANA. THE
PULASKI COUNTY CIVIL DEFENSE DIRECTOR REPORTED AT 755 AM EST
THE 30 TO 40 HOMES WERE DAMAGED AND THE PATH WAS ABOUT A MILE
WIDE. SOME MOBILE HOMES WERE DAMAGED AND FOUR PEOPLE WERE
INJURED. UNABLE TO DETERMINE IF DAMAGE WAS CAUSED BY TORNADO
OR STRAIGHT LINE WINDS. NONE OF THE INJURIES WAS SERIOUS.

EXACT LOCATION OF THIS EVENT IS UNKNOWN.
EDWARDS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 31, 9:23 PM EST	Severe Thunderstorm Warning	IND	Cass, White	37 min
Aug 31, 10:36 PM EST	Severe Thunderstorm Warning	IND	Benton	39 min
Sep 1, 5:56 AM EST	Flash Flood Warning	IND	Delaware, Madison	2 hr
Sep 1, 5:56 AM EST	Severe Thunderstorm Warning	IND	Delaware, Madison	64 min
Sep 1, 6:14 AM EST	Severe Thunderstorm Warning	IND	Randolph	46 min
Sep 1, 8:02 AM EST	Flash Flood Warning	IND	White	118 min

Nearby

Flash Flood Warnings in Indiana, 1989 Every 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.