Alert archive / Indiana / Flash Flood Warnings in 1998

Flash Flood Warning 32, NWS Indianapolis, IN

July 20, 19984 counties in Indiana

NWS Indianapolis, IN issued this flash flood warning at Jul 20, 1998, 11:40 AM EST for 4 counties in Indiana. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 20, 1998, 11:40 AM EST (16:40 UTC)
Expired
Jul 20, 1998, 5:00 PM EST
In force
5 hr
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Bartholomew County, IN, Decatur County, IN, Jackson County, IN, Jennings County, IN

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.7 hours before the alert went out and 173 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, Cncnati-Daytn, OH at 12:00Z on 1998-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 550 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, Cncnati-Daytn, OH at 12:00Z on 1998-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 square meters per square second.19395878Sfc1 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
550 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
699 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 201641
FFWIND
INC005-031-071-079-202200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1140 AM EST MON JUL 20 1998

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BARTHOLOMEW COUNTY IN CENTRAL INDIANA
  SOUTHWESTERN DECATUR COUNTY IN CENTRAL INDIANA
  JACKSON COUNTY IN SOUTH CENTRAL INDIANA
  WESTERN JENNINGS COUNTY IN SOUTHEASTERN INDIANA

* UNTIL 500 PM EST

* AT 1140 AM EST... AREA LAW ENFORCEMENT INDICATED MANY ROADS STILL
  CLOSED DUE TO HIGH WATER OVER BARTHOLOMEW...SOUTHWEST DECATUR AND
  WESTERN JENNINGS COUNTY. THUNDERSTORMS WITH HEAVY RAIN OF 1 TO 2
  INCHES PER HOUR WERE OVER JACKSON COUNTY.

* MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN.

AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS... AND BE PREPARED
TO MOVE TO HIGHER GROUND...SHOULD FLOOD WATERS THREATEN. AREA LAW
ENFORCEMENT ASK RESIDENTS TO NOT TRAVEL IN THE WARNING AREA DUE TO6
THE HIGH WATER AND CLOSED ROADS. IF FLASH FLOODING IS OBSERVED...ACT
QUICKLY AND MOVE TO HIGHER GROUND TO ESCAPE FLOOD WATERS.

&
LASHLEY

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 20, 6:09 AM EST, 5 hours 31 minutes before
INZ021-028>031-035>049-051>057-060>065-067>072-211200-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
605 AM EST SUN JUL 19 1998

SEVERE THUNDERSTORMS ARE POSSIBLE OVER CENTRAL INDIANA THIS MORNING.
THE THREAT AREA IS FROM THE SOUTH SIDE OF INDIANAPOLIS AND THE
MARTINSVILLE AREA SOUTHEAST TO COLUMBUS...GREENSBURG AND NORTH
VERNON.

THE PRIMARY SEVERE WEATHER CONCERN IS DAMAGING WINDS FLASH FLOODING.

SPOTTER ACTIVATION IS POSSIBvLE BUT NOT PLANNED.

TUCEK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 7:46 PM ESTSevere Thunderstorm WarningINDBoone34 min
Jul 19, 7:59 PM ESTSevere Thunderstorm WarningINDClinton36 min
Jul 19, 8:11 PM ESTSevere Thunderstorm WarningINDRush34 min
Jul 19, 8:15 PM ESTSevere Thunderstorm WarningINDHamilton35 min
Jul 19, 8:40 PM ESTSevere Thunderstorm WarningINDMadison30 min
Jul 19, 9:14 PM ESTSevere Thunderstorm WarningINDDelaware31 min
Jul 19, 9:21 PM ESTSevere Thunderstorm WarningINDRandolph49 min
Jul 19, 9:43 PM ESTSevere Thunderstorm WarningINDMadison32 min
Jul 19, 11:13 PM ESTSevere Thunderstorm WarningINDRush32 min
Jul 19, 11:48 PM ESTSevere Thunderstorm WarningINDRush32 min
Jul 20, 1:20 AM ESTSevere Thunderstorm WarningINDJohnson, Marion, Morgan30 min
Jul 20, 1:47 AM ESTSevere Thunderstorm WarningINDShelby33 min
Jul 20, 1:52 AM ESTSevere Thunderstorm WarningINDJohnson33 min
Jul 20, 2:32 AM ESTSevere Thunderstorm WarningINDBartholomew, Decatur33 min
Jul 20, 2:54 AM ESTSevere Thunderstorm WarningINDBrown31 min
Jul 20, 3:06 AM ESTSevere Thunderstorm WarningINDBartholomew34 min
Jul 20, 3:26 AM ESTSevere Thunderstorm WarningINDJohnson, Shelby34 min
Jul 20, 5:43 AM ESTFlash Flood WarningINDBartholomew, Decatur, Jennings6 hr

Nearby

Flash Flood Warnings in Indiana, 1998Every flash flood warning in 1998

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.