Alert archive / Indiana / Flash Flood Warnings in 1999

Flash Flood Warning 9, NWS Louisville, KY

January 22, 1999Clark County, Jefferson County, Scott County, Indiana

NWS Louisville, KY issued this flash flood warning at Jan 22, 1999, 7:40 PM EST for Clark County, Jefferson County, Scott County, 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
Jan 22, 1999, 7:40 PM EST (00:40 UTC)
Expired
Jan 23, 1999, 12:30 AM EST
In force
5 hr
Issued by
NWS Louisville, KY
Area
Whole counties

Counties Clark County, IN, Jefferson County, IN, Scott County, IN

The radar

The Louisville radar (KLVX), 80 km from the middle of the area, began a volume at 00:42 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.7 hours before the alert went out and 180 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 00:00Z on 1999-01-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 1999-01-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 292 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2246 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
292 m²/s²
0-3 km storm-relative helicity
553 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 230042
FFWSDF
INC019-077-143-KYC003-009-029-093-099-111-185-223-230530-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
740 PM EST (640 PM CST) FRI JAN 22 1999

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ALLEN COUNTY IN SOUTH CENTRAL KENTUCKY
  BARREN COUNTY IN SOUTH CENTRAL KENTUCKY
  BULLITT COUNTY IN NORTH CENTRAL KENTUCKY
  HARDIN COUNTY IN NORTH CENTRAL KENTUCKY
  HART COUNTY IN SOUTH CENTRAL KENTUCKY
  JEFFERSON COUNTY IN NORTH CENTRAL KENTUCKY
  OLDHAM COUNTY IN NORTH CENTRAL KENTUCKY
  TRIMBLE COUNTY IN NORTH CENTRAL KENTUCKY
  CLARK COUNTY IN SOUTH CENTRAL INDIANA
  JEFFERSON COUNTY IN SOUTH CENTRAL INDIANA
  SCOTT COUNTY IN SOUTH CENTRAL INDIANA

* UNTIL 1130 PM CST (1230 AM EST)

* AT 730 PM EST... NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED AN AREA OF SHOWERS AND THUNDERSTORMS OVER MUCH OF
CENTRAL KENTUCKY AND SOUTH CENTRAL INDIANA. THIS AREA OF
PRECIPITATION WAS MOVING NORTHEAST AT 30 MPH.

* RAINFALL WILL CONTINUE OVER MUCH OF CENTRAL KENTUCKY AND SOUTH
  CENTRAL INDIANA THROUGH THE EVENING HOURS OVER AREAS THAT HAVE
  RECEIVED AS MUCH AS 2 TO 4 INCHES OF RAIN OVER THE LAST 24 HOURS.
  AREA LAW ENFORCEMENT OFFICERS HAVE REPORTED ROADWAYS UNDER 6 TO 12
  INCHES OF WATER...ESPECIALLY ACROSS SOUTH CENTRAL INDIANA.

ONE TO THREE INCHES OF ADDITIONAL RAINFALL SHOULD FALL OVER THE
WARNED AREA BY MIDNIGHT WHICH WILL LEAD TO A WIDESPREAD AREA OF
FLASH FLOODING ACROSS CENTRAL KENTUCKY AND SOUTH CENTRAL INDIANA.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. DON'T DRIVE ACROSS FLOODED ROADS...BRIDGES...DIPS OR LOW
SPOTS! MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.

KIRKPATRICK/MARIEN

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 22, 11:31 PM ESTFlash Flood WarningLMKCrawford, Dubois, Orange, Washington6 hr
Jan 22, 11:31 PM ESTFlash Flood WarningLMKHarrison, Perry6 hr
Jan 22, 11:31 PM ESTFlash Flood WarningLMKFloyd6 hr
Jan 23, 12:30 AM ESTFlash Flood WarningLMKClark, Jefferson, Scott6 hr

Nearby

Flash Flood Warnings in Indiana, 1999Every flash flood warning in 1999

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.