Alert archive / Kentucky / Flash Flood Warnings in 1998

Flash Flood Warning 38, NWS Wilmington, OH

April 30, 1998Carroll County, Gallatin County, Owen County, Kentucky

NWS Wilmington, OH issued this flash flood warning at Apr 30, 1998, 9:56 AM EDT for Carroll County, Gallatin County, Owen County, Kentucky. 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
Apr 30, 1998, 9:56 AM EDT (13:56 UTC)
Expired
Apr 30, 1998, 2:55 PM EDT
In force
5 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

Counties Carroll County, KY, Gallatin County, KY, Owen County, KY

The radar

The Louisville radar (KLVX), 115 km from the middle of the area, began a volume at 13:59 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 12:00Z, 1.9 hours before the alert went out and 131 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 1998-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 30 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 1998-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 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
30 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
500 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
98 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 KILN 301359
FFWILN
KYC041-077-187-301850-

BULLETIN
FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
956 AM EDT THU APR 30 1998

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLOOD WARNING FOR SMALL STREAMS FOR...
  CARROLL COUNTY IN NORTHERN KENTUCKY.
  GALLATIN COUNTY IN NORTHERN KENTUCKY.
  OWEN COUNTY IN NORTHERN KENTUCKY.

* EFFECTIVE UNTIL 255 PM EDT.

* AT 945 AM EDT...WEATHER SERVICE RADAR AND OBSERVERS INDICATED
  THAT FROM 1 TO 1.5 INCHES OF RAIN HAD FALLEN OVERNIGHT AND THIS
  MORNING IN MUCH OF NORTHERN KENTUCKY...PARTICULARLY IN THE
  GALLATIN...OWEN AND CARROLL COUNTY AREAS.

* EAGLE CREEK...WHICH RUNS THROUGH ALL THREE COUNTIES WAS RISING
  RAPIDLY AS A RESULT OF THE WIDESPREAD MODERATE RAIN. UP TO AN
  ADDITIONAL 1 TO 1.5 INCHES OF RAINFALL CAN BE EXPECTED THROUGH
  TONIGHT...RESULTING IN ADDITIONAL RISES ALONG EAGLE CREEK.

* SOME LOCATIONS THAT WILL BE AFFECTED BY FLOODING ALONG EAGLE CREEK
  INCLUDE...WORTHVILLE...EAGLE STATION...SANDERS...SPARTA AND
  GLENCOE.

AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS AND BE PREPARED
TO MOVE TO HIGHER GROUND SHOULD FLOOD WATERS THREATEN.

MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.


DIAN-REED

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.

NWS Wilmington, OH wrote its last area forecast discussion before this flash flood warning went out at Apr 30, 9:20 AM EDT, 36 minutes earlier.

Area forecast discussion, Apr 30, 9:20 AM EDT, 36 minutes before
FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
920 AM EDT THU APR 30 1998

CONVECTION IN GULF MVD FAR ENUF EAST OVRNITE TO ALLOW NORTHWARD
TRANSPORT OF MOIST INTO REGION. 1 TO 2 INCHES OF RAIN FELL OVR SOUTHERN
OHIO AND NORTHERN KY/SE IND OVRNITE. BREAK IN MODERATE TO HEAVY PCPN
THIS AM W/ MAINLY LIGHT PCPN ON 88D. NO REPORTS OF FLOODING THIS
AM...BUT CREEKS AND STREAMS MUST BE CLOSE TO BANKFULL ACRS SRN AREAS.

H8 JET KEY TDY AS IT PUSHES NORTHEAST FROM WRN TN TO PA DURING THE DAY.
WILL PROVIDE CVRG FOR DVLPMENT OF MORE MOD TO HEAVY PCPN. CLD CVR AND
RAIN SHUD KEEP TEMPS FROM RISING TOO MUCH TODAY...BUT DWPTS SHUD RISE
TO ARND 60. MOD KILN SNDG SHWD CAPES TO 800 EVEN W/ WRMG AT JUST ABT
ALL LVLS. POSS OF SM CONVECTION THIS AFTN...NOT WIDESPREAD...WHICH CUD
FURTHER AGGREVATE ANY FLOODING PROBS. RCMD FFA FOR NRN KY AREAS AND
KEEP FFA IN CRNT SRN OHIO AREAS.

SEVERE WX DOES NOT SEEM TO BE A BIG THREAT TDY BUT STADTS SHWS SVRL
SEVERE/TOR REPORTS FROM ILLINOIS FROM YSTDY. TREES HAVE ALREADY FALLEN
IN THE CVG AREA WITH NO WINDS AT ALL...JUST BECAUSE GROUND IS SO
SATURATED. LOOKS LIKE ANY WIND WILL KNOCK DOWN TREES TDY AND SO ISOLD
SEVERE NOT OUT OF THE QUESTION.

FARINA

Nearby

Flash Flood Warnings in Kentucky, 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.