Alert archive / Kentucky / Flash Flood Warnings in 1999

Flash Flood Warning 21, NWS Louisville, KY

January 23, 1999Oldham County, Trimble County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jan 23, 1999, 12:30 AM EST for Oldham County, Trimble County, Kentucky. It was in force for 6 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 23, 1999, 12:30 AM EST (05:30 UTC)
Expired
Jan 23, 1999, 6:30 AM EST
In force
6 hr
Issued by
NWS Louisville, KY
Area
Whole counties

Counties Oldham County, KY, Trimble County, KY

The radar

The Louisville radar (KLVX), 76 km from the middle of the area, began a volume at 05:34 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 5.5 hours before the alert went out and 172 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°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 KLMK 230531
FFWSDF
INC019-077-143-KYC003-009-029-087-093-099-111-123-169-171-185-
223-231130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
1230 AM EST (1130 PM CST) SAT JAN 23 1999

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED THE

* FLASH FLOOD WARNING FOR...
  ALLEN COUNTY IN SOUTH CENTRAL KENTUCKY
  BARREN COUNTY IN SOUTH CENTRAL KENTUCKY
  BULLITT COUNTY IN NORTH CENTRAL KENTUCKY
  GREEN COUNTY IN SOUTH CENTRAL KENTUCKY
  HARDIN COUNTY IN NORTH CENTRAL KENTUCKY
  HART COUNTY IN SOUTH CENTRAL KENTUCKY
  JEFFERSON COUNTY IN NORTH CENTRAL KENTUCKY
  LARUE COUNTY IN NORTH CENTRAL KENTUCKY
  METCALFE COUNTY IN SOUTH CENTRAL KENTUCKY
  MONROE COUNTY IN SOUTH 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 630 AM EST (530 AM CST)

* AT 1230 AM EST (1130 PM CST)... NATIONAL WEATHER SERVICE DOPPLER
RADAR INDICATED A LARGE AREA OF RAIN AND EMBEDDED THUNDERSTORMS WITH
HEAVY RAIN...MOVING NORTH AT 50 MPH.

* THIS AREA OF RAIN AND THUNDERSTORMS WILL CONTINUE MOVING THROUGH
THE AREA OVERNIGHT AND PRODUCE AN ADDITIONAL 1 TO 3 INCHES OF RAIN
BY SUNRISE. SO FAR...DOPPLER RADAR HAS ESTIMATED BETWEEN 1 AND 2
INCHES OF RAIN HAS OCCURRED DURING THE PAST 18 HOURS.

SEVERAL ROADS HAVE BEEN CLOSED IN ALLEN COUNTY AND HIGH WATER HAS
BLOCKED SEVERAL ROADS IN CLARK AND SCOTT COUNTIES OF 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, 7:40 PM ESTFlash Flood WarningLMKBullitt, Jefferson, Oldham5 hr
Jan 22, 7:40 PM ESTFlash Flood WarningLMKAllen5 hr
Jan 22, 7:40 PM ESTFlash Flood WarningLMKTrimble5 hr
Jan 22, 7:40 PM ESTFlash Flood WarningLMKBarren, Hardin, Hart5 hr
Jan 22, 11:31 PM ESTFlash Flood WarningLMKBreckinridge, Butler, Edmonson, Grayson, Ohio6 hr
Jan 22, 11:31 PM ESTFlash Flood WarningLMKLogan, Simpson, Warren6 hr
Jan 22, 11:31 PM ESTFlash Flood WarningLMKMeade6 hr
Jan 22, 11:31 PM ESTFlash Flood WarningLMKHancock6 hr
Jan 23, 12:30 AM ESTFlash Flood WarningLMKBullitt, Hardin, Hart, Jefferson, Larue6 hr
Jan 23, 12:30 AM ESTFlash Flood WarningLMKAllen, Barren, Monroe6 hr
Jan 23, 12:30 AM ESTFlash Flood WarningLMKGreen, Metcalfe6 hr

Nearby

Flash Flood Warnings in Kentucky, 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.