Alert archive / Ohio / Flash Flood Warnings in 1998

Flash Flood Warning 96, NWS Wilmington, OH

June 29, 1998Franklin County, Madison County, Pickaway County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jun 29, 1998, 9:44 PM EDT for Franklin County, Madison County, Pickaway County, Ohio. It was in force for 3 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
Jun 29, 1998, 9:44 PM EDT (01:44 UTC)
Expired
Jun 30, 1998, 12:40 AM EDT
In force
3 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

Counties Franklin County, OH, Madison County, OH, Pickaway County, OH

The radar

The Cincinnati radar (KILN), 74 km from the middle of the area, began a volume at 01:47 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, 1.7 hours before the alert went out and 72 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 1998-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 397 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 00:00Z on 1998-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 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
397 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
1435 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
201 m²/s²
Significant tornado parameter
0.1
Supercell composite
4.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KILN 300144
FFWILN
OHC049-097-129-300440-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
944 PM EDT MON JUN 29 1998

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FRANKLIN COUNTY IN CENTRAL OHIO.
  MADISON COUNTY IN CENTRAL OHIO.
  PICKAWAY COUNTY IN CENTRAL OHIO.

* EFFECTIVE UNTIL 1240 AM EDT.

*AT 940 PM...NATIONAL WEATHER SERVICE RADAR INDICATED THAT
THUNDERSTORMS WHICH ARE PRODUCING AN INCH TO TWO INCHES OF RAIN IN
AN HOURS WILL MOVE ACROSS MADISON...FRANKLIN...AND PICKAWAY
COUNTIES THROUGH THE OVERNIGHT HOURS.

*SINCE THE GROUND IS ALREADY SATURATED FROM THE RAINS RECEIVED
SUNDAY NIGHT AND EARLY MONDAY MORNING...MUCH OF THE RAIN WILL FLOW
DIRECTLY INTO THE STREAMS AND CREEKS AND WILL CAUSE THEM TO RISE
RAPIDLY. THE MAIN LOCATIONS OF CONCERN ARE ACROSS CENTRAL AND
SOUTHERN MADISON COUNTY... SOUTHWESTERN FRANKLIN AND NORTH PICKAWAY
COUNTIES.

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

INNES

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 Jun 29, 9:00 PM EDT, 44 minutes earlier.

Area forecast discussion, Jun 29, 9:00 PM EDT, 44 minutes before
FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
900 PM EDT MON JUN 29 1998

COMPLEX IN CENTRAL INDINANA CONTINUES TO DROP TO THE SOUTHEAST.
CURRENT TRACK WILL BRING THE STRONGEST STORMS INTO SOUTHWEST SECTION
OF CWA...BUT REST OF CWA WILL BE AFFECTED BY THE THE SYSTEM. WOULD
UP POPS TO CATEGORICAL...AT LEAST TO IN SW OH...SE IN AND NRN KY DUE
TO EXTENSIVE PRECIP SHEILD.  FLASH FLOOD WATCHES LOOKING GOOD.

WITH DEWPOINTS IN THE LOWER 70S LOWER MIGHT HOLD IN THE 70 TO 75
RANGE ACROSS THE SOUTH.

SITES

In the hours before

Special weather statement, Jun 29, 7:32 PM EDT, 2 hours 12 minutes before
INZ050-058-059-066-073>075-080-KYZ089-090-094-300525-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
737 PM EDT (632 PM EST) MON JUN 29 1998

...TORNADO WATCH FOR SOUTHEAST INDIANA (INCLUDING THE WHITEWATER
   VALLEY) AND NORTHWEST KENTUCKY UNTIL 1 AM EDT...

A TORNADO WATCH HAS BEEN ISSUED FOR SOUTHEAST INDIANA (INCLUDING
THE WHITEWATER VALLEY) AND NORTHWEST KENTUCKY THROUGH 1 AM EDT
(MIDNIGHT EST). A LARGE AREA OF THUNDERSTORMS THAT HAVE ALREADY
PRODUCED SEVERE WEATHER WILL BE DIVING SOUTHEAST THROUGH INDIANA AND
NORTHWESTERN KENTUCKY THIS EVENING.  LARGE HAIL... DAMAGING WINDS
AND EVEN SOME TORNADOES COULD OCCUR WITH THUNDERSTORMS IN INDIANA
AND NORTHWESTERN KENTUCKY THIS EVENING.

SOME CITIES INCLUDED IN THE WATCH ARE RICHMOND...BROOKVILLE...
LAWRENCEBURG...CARROLLTON AND OWENTON.

STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST INFORMATION
CONCERNING THUNDERSTORMS THIS EVENING.

FARINA

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 9:10 PM EDTSevere Thunderstorm WarningILNMiami20 min
Jun 29, 9:23 PM EDTSevere Thunderstorm WarningILNMontgomery32 min
Jun 29, 9:42 PM EDTSevere Thunderstorm WarningILNDarke43 min
Jun 29, 10:24 PM EDTSevere Thunderstorm WarningILNHamilton46 min
Jun 29, 11:04 PM EDTSevere Thunderstorm WarningILNClermont61 min
Jun 29, 11:13 PM EDTFlash Flood WarningILNMiami117 min
Jun 29, 11:18 PM EDTSevere Thunderstorm WarningILNClark47 min
Jun 29, 11:29 PM EDTFlash Flood WarningILNFranklin, Madison, Pickaway3 hr
Jun 29, 11:29 PM EDTFlash Flood WarningILNLicking3 hr
Jun 29, 11:32 PM EDTSevere Thunderstorm WarningILNBrown58 min

Nearby

Flash Flood Warnings in Ohio, 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.