Alert archive / Indiana / Flash Flood Warnings in 1990

Flash Flood Warning 6, NWS Wilmington, OH

May 15, 1990Dearborn County, Indiana

NWS Wilmington, OH issued this flash flood warning at May 15, 1990, 6:52 PM EDT for Dearborn County, Indiana. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
May 15, 1990, 6:52 PM EDT (22:52 UTC)
Expired
May 15, 1990, 9:00 PM EDT
In force
2 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

County Dearborn County, IN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 12:00Z, 10.9 hours before the alert went out and 107 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, Dayton/James M C, OH at 12:00Z on 1990-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 237 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, Dayton/James M C, OH at 12:00Z on 1990-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.1939587897Sfc1 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
237 J/kg
Mixed-layer CIN
-156 J/kg
Mixed-layer LCL
1079 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCVG 152250
FFWCVG
INC029-160100-
 
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE CINCINNATI OH
652 PM EDT TUE MAY 15 1990
 
THE NATIONAL WEATHER SERVICE IN CINCINNATI HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL  900 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHEAST INDIANA
          ...DEARBORN
 
AT 645 PM EDT THE WARN NET AND CO-OPERATIVE OBSERVERS REPORTED LAUFREY
CREEK IN SOUTHERN DEARBORN COUNTY OF SOUTHEAST INDIANA NEAR BANKFULL.
AT 645 PM EDT RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN
MOVING INTO WESTERN DEARBORN COUNTY. SMALL CREEKS WILL LIKELY RISE
ABOVE BANKFULL AND CAUSE FLOODING.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. n TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
JN

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.

In the hours before

Special weather statement, May 15, 1:43 PM EDT, 5 hours 9 minutes before
OHZ008-KYZ005-INZ013-151830

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CINCINNATI OH
143 PM EDT TUE MAY 15 1990

THUNDERSTORMS WITH HEAVY RAIN...SMALL HAIL AND FREQUENT LIGHTNING
WERE IN CLINTON AND WARREN COUNTIES OF SOUTHWEST OHIO AT 130 PM.

AT 130 THIS AFTERNOON WEATHER SERVICE RADAR INDICATED SHOWERS AND
THUNDERSTORMS EXTENDING FROM LOUISVILLE THROUGH CINCINNATI TO COLUMBUS
OHIO.

THUNDERSTORMS WITH VERY HEAVY RAIN AND POSSIBLE PEA SIZE HAIL WERE IN
SOUTHERN CLINTON AND WARREN COUNTIES AND NORTHERN CLERMONT COUNTY OF
SOUTHWEST OHIO.

AT 107 PM HAMILTON COUNTY POLICE REPORTED PEA SIZE HAIL AND VERY HEAVY
RAIN AT FORREST PARK. A CO-OERATIVE OBSERVER AT EVENDALE REPORTED SIX-
TENTHS OF AN INCH OF RAIN IN A HALF AN HOUR.

IF YOU LIVE IN SOUTHWEST OHIO AND NORTHERN KENTUCKY BE PREPARED FOR
VERY HEAVY RAIN AND NEAR ZERO VISIBILITIES...ESPECIALLY WHILE DRIVING.
ALSO SMALL HAIL IS POSSIBLE.

JN
Special weather statement, May 15, 2:45 PM EDT, 4 hours 7 minutes before
OHZ008-152000-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CINCINNATI OH
245 PM EDT TUE MAY 15 1990

THUNDERSTORMS WITH HEAVY RAIN...SMALL HAIL AND FREQUENT LIGHTNING
CONTINUED TO MOVE THROUGH SOUTHWEST OHIO.

AT 233 THIS AFTERNOON WEATHER SERVICE RADAR INDICATED SHOWERS AND
THUNDERSTORMS THAT COVERED SOUTHERN AND WESTERN OHIO...AND MOST OF
EASTERN INDIANA.

THUNDERSTORMS WITH VERY HEAVY RAIN...PEA SIZE HAIL AND FREQUENT
LIGHTNING WERE LOCATED OVER CLERMONT...HIGHLAND AND BROWN COUNTIES OF
SOUTHWEST OHIO.

A RATHER LARGE AREA OF RAIN WILL AGAIN MOVE ACROSS SOUTHWEST OHIO AND
THE EXTREME TIP OF NORTHERN KENTUCKY BEFORE 4 O'CLOCK THIS AFTERNOON.
ANY MORE RAINFALL RECEIVED FROM THIS RATHER LARGE RAIN AREA WILL ONLY ADD
TO THE HEAVY AMOUNTS THAT HAVE ALREADY FALLEN THUS FAR.

MANY STREETS AND ROADS...ESPECIALLY IN CINCINNATI HAVE REPORTS OF
EIGHT TO TEN INCHES OF STANDING WATER ALREADY.

CONTINUED STREET FLOODING OR PONDING OF WATER IS LIKELY...DO NOT
ATTEMPT TO CROSS FLOODED ROADWAYS IN A VEHICLE.

JMM
Special weather statement, May 15, 4:44 PM EDT, 2 hours 8 minutes before
KYZ005-152200-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CINCINNATI OH
445 PM EDT TUE MAY 15 1990

THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE MOVING ACROSS NORTHERN
KENTUCKY THIS AFTERNOON AT 430 PM.

THUNDERSTORMS EXTENDED FROM ERLANGER IN KENTON COUNTY OF NORTHERN
KENTUCKY SOUTH TO FRANKFORT. THESE THUNDERSTORMS WERE PRODUCING VERY
HEAVY RAINFALL AND POSSIBLE SMALL HAIL.

THIS LINE WAS MOVING EAST AROUND 30 MPH.

THUNDERSTORMS WILL CONTINUE TO MOVE EAST ACROSS NORTHERN KENTUCKY
PLACING THEM INTO CAMPBELL...PENDLETON AND BRACKEN COUNTIES BEFORE
530 PM THIS AFTERNOON.

MEDLIN
Special weather statement, May 15, 5:48 PM EDT, 1 hour 4 minutes before
KYZ005-OHZ008-152245

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CINCINNATI OH
547 PM EDT TUE MAY 15 1990

THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE MOVING ACROSS NORTHERN
KENTUCKY AND SOUTHWEST OHIO AT 535 PM.

THUNDERSTORMS EXTENDED FROM XENIA OHIO TO CYNTHIANA KENTUCKY TO
GREENSBURG KENTUCKY. THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM
BETHEL OHIO TO NEAR MT. OLIVET KENTUCKY.

THE THUNDERSTORMS WERE MOVING NORT(HEAST AT 30 MILES AN HOUR AND WILL
ENTER HIGHLAND AND BROWN COUNTIES OF SOUTHWEST OHIO AND MASON COUNTY
IN NORTHEAST KENTUCKY.

THESE THUNDERSTORMS WILL CAUSE PONDING OF WATER ON STREETS AND LOW LYING
AREAS.
JN
Special weather statement, May 15, 6:16 PM EDT, 36 minutes before
INZ013-152330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CINCINNATI OH
615 PM EDT TUE MAY 15 1990

THUNDERSTORMS WITH VERY HEAVY RAIN...SMALL HAIL AND BRIEF GUSTY
WINDS WERE HEADED FOR SOUTHEAST INDIANA.

WEATHER SERVICE RADAR IN CINCINNATI INDICATED A SMALL AREA OF
THUNDERSTORMS OVER SOUTH CENTRAL INDIANA...FROM 40 MILES NORTHWEST
OF LOUISVILLE EASTWARD TO NORTH VERNON IN JENNINGS COUNTY.

THESE THUNDERSTORMS WERE MOVING EAST AROUND 30 MILES AN HOUR.

THIS CURRENT RATE OF MOVEMENT WILL PLACE THE STORMS OVER RIPLEY
COUNTY BY 645 PM EDT. THE STORMS WILL THEN MOST LIKELY CONTINUE TO
MOVE EAST PASSING THROUGH SOUTHERN DEARBORN...SWITZERLAND AND OHIO
COUNTIES BEFORE 8 O'CLOCK THIS EFVENING.

MEDLIN
Special weather statement, May 15, 6:50 PM EDT, 2 minutes before
INZ013-152330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CINCINNATI OH
652 PM EDT TUE MAY 15 1990

AT 630 PM NATIONAL WEATHER SERVICE RADAR SHOWED A AREA OF SHOWERS
AND THUNDERSTORMS IN SOUTHEAST INDIANA...SOUTHWEST OHIO AND NORTH
CENTRAL KENTUCKY.

THE MOST INTENSE THUNDERSTORM WAS OVER NORTH CENTRAL KENTUCKY 50
MILES SOUTHEAST OF LOUISVILLE. THIS STORM HAS PRODUCED HAIL AND
EXTREMELY HEAVY RAIN. ANOTHER AREA OF SHOWERS AND THUNDERSTORMlS
EXTENDED FROM 75 MILES WEST OF CINCINNATI EAST TO WAVERLY OHIO WHICH
IS 75 MILES EAST OF CINCINNATI.

MOVEMENT OF THE SHOWERS AND THUNDERSTORMS WAS TO THE EAST AT 25 MILES
AN HOUR.

KEENEY

Nearby

Flash Flood Warnings in Indiana, 1990Every flash flood warning in 1990

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.