Alert archive / Indiana / Flash Flood Warnings in 1998

Flash Flood Warning 40, NWS Louisville, KY

July 7, 1998Harrison County, Indiana

NWS Louisville, KY issued this flash flood warning at Jul 7, 1998, 7:31 PM EDT for Harrison County, Indiana. It was in force for 119 min. 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 7, 1998, 7:31 PM EDT (23:31 UTC)
Expired
Jul 7, 1998, 9:30 PM EDT
In force
119 min
Issued by
NWS Louisville, KY
Area
Whole counties

County Harrison County, IN

The radar

The Louisville radar (KLVX), 28 km from the middle of the area, began a volume at 23:34 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.5 hours before the alert went out and 234 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, Nashville Metro, TN at 12:00Z on 1998-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 515 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, Nashville Metro, TN at 12:00Z on 1998-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
515 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1076 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
57 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 KSDF 072333
FFWSDF
INC061-080130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
731 PM EDT TUE JUL 7 1998

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HARRISON COUNTY IN SOUTH CENTRAL INDIANA

* UNTIL 930 PM EDT

* AT 730 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH VERY HEAVY RAIN OVER HARRISON COUNTY... MOVING
  EAST SOUTHEAST JAT 25 MPH.

* AN AUTOMATED RAIN GAGE REPORTED 1.10 INCHES OF RAIN IN 15 MINUTES
  IN CORYDON.

MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN YOUR AREA.

CS/CMC


&

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 7, 4:57 PM EDTFlash Flood WarningLMKDubois2 hr
Jul 7, 5:31 PM EDTSevere Thunderstorm WarningLMKDubois34 min
Jul 7, 6:10 PM EDTFlash Flood WarningLMKCrawford2 hr
Jul 7, 6:15 PM EDTFlash Flood WarningLMKPerry2 hr
Jul 7, 6:56 PM EDTFlash Flood WarningLMKDubois64 min

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; radar from the NEXRAD Level II archive.