Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 23, NWS Wilmington, OH

July 11, 1990Montgomery County, Preble County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jul 11, 1990, 10:50 PM EDT for Montgomery County, Preble County, Ohio. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 11, 1990, 10:50 PM EDT (02:50 UTC)
Expired
Jul 12, 1990, 1:45 AM EDT
In force
3 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

Counties Montgomery County, OH, Preble County, OH

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 00:00Z, 2.8 hours before the alert went out and 29 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 00:00Z on 1990-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 40 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 00:00Z on 1990-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
40 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
732 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
72 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 KDAY 120250
FFWDAY
OHC023-113-135-120545-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
URBAN AND SMALL STREAM FLOOD WARNING 
NATIONAL WEATHER SERVICE DAYTON OH
1050 PM EDT WED JUL 11 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A URBAN AND SMALL 
STREAM FLOOD WARNING EFFECTIVE UNTIL 145 AM EDT FOR PEOPLE IN 
THE FOLLOWING COUNTIES

   IN THE STATE OF OHIO
      CLARK...MONTGOMERY...PREBLE

AT 1045 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF
SHOWERS AND THUNDERSTORMS FROM SPRINGFIELD IN CLARK COUNTY
TO EATON IN PREBLE COUNTY IN SOUTHWESTERN OHIO.

THESE THUNDERSTORMS WERE PRODUCING VERY HEAVY RAIN WITH REPORTS
RANGING FROM ONE HALF INCH TO OVER ONE INCH ACROSS THE AREA.
THESE STORMS HAVE BEEN MOVING SLOWLY TO THE EAST AT 20 MPH.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONRED IMMEDIATELY.
MOVE TO HIGHER GROUND.

 SHARTRAN

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, Jul 11, 5:45 PM EDT, 5 hours 5 minutes before
OHZ008-INZ013-KYZ005-112145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CINCINNATI OH
445 PM EDT WED JUL 11 1990

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EXTREME SOUTHEAST
INDIANA...SOUTHWEST OHIO AND NORTHERN KENTUCKY UNTIL 10 PM EDT.

AT 430 PM EDT...STRONG THUNDERSTORMS WERE OCCURRING OVER PARTS OF
SOUTHWEST OHIO AND NORTHERN AND CENTRAL KENTUCKY.

THE STRONG THUNDERSTORMS EXTENDED FROM ABOUT 40 MILES EAST OF
LOUISVILLE KENTUCKY...NORTHEAST TO NEAR DAYTON OHIO.

A LARGER AREA OF SHOWERS AND THUNDERSTORMS EXTENDED OVER A WIDE
AREA FROM ABOUT 60 MILES SOUTH OF LOUISVILLE...NORTHEAST TO NEAR
COLUMBUS OHIO.

BRIEF HEAVY RAIN...SMALL HAIL...GUSTY WINDS AND FREQUENT LIGHTNING HAVE
BEEN REPORTED WITH THESE STORMS.
<
THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT ABOUT 35 MILES
AN HOUR.

STAY TUNED TO YOUR LOCAL RADIO STATION FOR FURTHER INFORMATION.

GOLDEN
Special weather statement, Jul 11, 5:48 PM EDT, 5 hours 2 minutes before
OHZ008-INZ013-KYZ005-112245-

SPECIAL WEATHER STATEMENT...CORRECTED...
NATIONAL WEATHER SERVICE CINCINNATI OH
545 PM EDT WED JUL 11 1990

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EXTREME SOUTHEAST
INDIANA...SOUTHWEST OHIO AND NORTHERN KENTUCKY UNTIL 10 PM EDT.

AT 430 PM EDT...STRONG THUNDERSTORMS WERE OCCURRING OVER PARTS OF
SOUTHWEST OHIO AND NORTHERN AND CENTRAL KENTUCKY.

THE STRONG THUNDERSTORMS EXTENDED FROM ABOUT 40 MILES EAST OF
LOUISVILLE KENTUCKY...NORTHEAST TO NEAR DAYTON OHIO.

A LARGER AREA OF SHOWERS AND THUNDERSTORMS EXTENDED OVER A WIDE
AREA FROM ABOUT 60 MILES SOUTH OF LOUISVILLE...NORTHEAST TO NEAR
COLUMBUS OHIO.

BRIEF HEAVY RAIN...SMALL HAIL...GUSTY WINDS AND FREQUENT LIGHTNING HAVE
BEEN REPORTED WITH THESE STORMS.
<
THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT ABOUT 35 MILES
AN HOUR.

STAY TUNED TO YOUR LOCAL RADIO STATION FOR FURTHER INFORMATION.

GOLDEN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 10:50 PM EDTFlash Flood WarningILNClark3 hr
Jul 12, 12:01 AM EDTFlash Flood WarningILNAshland119 min
Jul 12, 5:21 AM EDTFlash Flood WarningILNAshland3 hr
Jul 12, 5:30 AM EDTFlash Flood WarningILNCrawford, Richland3 hr
Jul 12, 8:30 AM EDTFlash Flood WarningILNAshland, Richland2 hr
Jul 12, 9:10 AM EDTFlash Flood WarningILNCrawford, Morrow3 hr
Jul 12, 9:10 AM EDTFlash Flood WarningILNKnox3 hr
Jul 12, 10:20 AM EDTFlash Flood WarningILNAshland, Crawford, Knox, Morrow, Richland5 hr
Jul 12, 10:29 AM EDTFlash Flood WarningILNGreene3 hr

Nearby

Flash Flood Warnings in Ohio, 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.