Alert archive / Indiana / Flash Flood Warnings in 1998

Flash Flood Warning 39, NWS Louisville, KY

July 7, 1998Dubois County, Indiana

NWS Louisville, KY issued this flash flood warning at Jul 7, 1998, 5:56 PM EST for Dubois County, Indiana. It was in force for 64 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, 5:56 PM EST (22:56 UTC)
Expired
Jul 7, 1998, 7:00 PM EST
In force
64 min
Issued by
NWS Louisville, KY
Area
Whole counties

County Dubois County, IN

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.9 hours before the alert went out and 248 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, Lincoln, IL at 12:00Z on 1998-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 943 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, Lincoln, IL at 12:00Z on 1998-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.193958Sfc1 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
943 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
1078 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSDF 072258
FFWSDF
INC037-080000-

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

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

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

* UNTIL 700 PM EST (800 PM EDT)

* AT AT 655 PM EDT / 555 PM EST... NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN OVER DUBOIS
  COUNTY... MOVING SOUTHEAST AT 25 MPH.

* MODERATE TO HEAVY RAIN EXTENDS TO THE NORTHWEST OF DUBOIS COUNTY.
  THIS RAIN WILL CONTINUE TO MOVE OVER AREAS THAT HAVE ALREADY
  RECEIVED HEAVY RAIN THIS EVENING.

DON'T DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN
AUTOMOBILES.

CS/AB

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 3:57 PM ESTFlash Flood WarningLMKDubois2 hr
Jul 7, 4:31 PM ESTSevere Thunderstorm WarningLMKDubois34 min
Jul 7, 5:10 PM ESTFlash Flood WarningLMKCrawford2 hr
Jul 7, 5:15 PM ESTFlash Flood WarningLMKPerry2 hr
Jul 7, 6:31 PM ESTFlash Flood WarningLMKHarrison119 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.