Alert archive / Ohio / Flash Flood Warnings in 1992

Flash Flood Warning 22, NWS Wilmington, OH

July 29, 1992Hamilton County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jul 29, 1992, 8:40 PM EDT for Hamilton County, Ohio. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jul 29, 1992, 8:40 PM EDT (00:40 UTC)
Expired
Jul 29, 1992, 10:45 PM EDT
In force
2 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

County Hamilton County, OH

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 0.7 hours before the alert went out and 84 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 1992-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 252 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 1992-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
252 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1093 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCVG 300044
FFWCVG
OHC061-300245-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE CINCINNATI OH
840 PM EDT WED JUL 29 1992
 
THE NATIONAL WEATHER SERVICE IN CINCINNATI HAS ISSUED A
FLOOD WARNING FOR SMALL STREAMS AND URBAN AREAS EFFECTIVE
UNTIL 1000 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHWEST OHIO
          ...HAMILTON
 
AT 835 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A THUNDERSTORM
PRODUCING TORRENTIAL RAINS OVER EASTERN SECTIONS OF HAMILTON COUNTY.
WEATHER SPOTTERS INDICATED THAT WATER WAS OVER THE ROADWAY AT COLERAIN
AND ROUNDTOP ROAD ALSO 1 MILE NORTH OF GALBRAITH ROAD.
 
RAINFALL TOTALS OF OVER 3/4 OF AN INCH FELL IN JUST 30 MINUTES IN
COLERAIN TOWNSHIP IN CENTRAL HAMILTON COUNTY. THE STORM WAS MOVING
SOUTHEAST AT 30 MILES AN HOUR.
 
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE 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
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
KEENEY/MSL

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 29, 5:14 PM EDT, 3 hours 26 minutes before
OHZ006-007-009-011-292315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBUS OH
514 PM EDT WED JUL 29 1992

THUNDERSTORMS PRODUCING BRIEF TORRENTIAL DOWNPOURS AND GUSTY WINDS
MOVED INTO CENTRAL OHIO LATE THIS AFTERNOON.

AT 510 PM NATIONAL WEATHER SERVICE RADAR INDICATED SCATTERED SHOWERS
AND THUNDERSTORMS NORTH OF A DAYTON TO COLUMBUS TO ZANESVILLE LINE.
ALL THE PRECIPITATION WAS MOVING TO THE EAST AT 25 MILES AN HOUR AND
WILL CONTINUE OVER CENTRAL OHIO THROUGH 7 PM.

THE STORMS PRODUCING THE HEAVIEST RAINFALL WERE OVER MARION...NORTHERN
DELAWARE AND SOUTHERN UNION COUNTIES. THE UNION AND MARION COUNTY
SHERIFFS BOTH REPORTED VERY HEAVY RAIN WITH THESE STORMS.

THE THUNDERSTORMS OVER UNION...MARION AND DELAWARE COUNTIES MAY ALSO
PRODUCE WIND GUSTS TO 40 MILES AN HOUR...PEA SIZE HAIL AND TORRENTIAL
DOWNPOURS.

SOME OF THE THUNDERSTORMS OVER WESTCENTRAL OHIO PRODUCED 1 TO 2 INCHES
OF RAIN BETWEEN 4 AND 5 PM. SOME OF THESE STORMS WILL EVENTUALLY MOVE
INTO CENTRAL OHIO.

THE GROUND REMAINS SATURATED OVER CENTRAL OHIO AND THE ADDITIONAL
HEAVY RAINFALL WILL CAUSE PONDING OF WATER ON ROADWAYS AND STANDING
WATER IN LOW LYING AREAS.

PEOPLE THROUGHOUT CENTRAL OHIO SHOULD BE PREPARED TO ACT QUICKLY AND
MOVE TO HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED.
LISTEN TO NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION AND
POSSIBLE WARNINGS.

SMITH
Special weather statement, Jul 29, 5:45 PM EDT, 2 hours 55 minutes before
OHZ008-292240-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CINCINNATI OH
545 PM EDT WED JUL 29 1992

THUNDERSTORMS WERE MOVING THROUGH PARTS OF SOUTHWEST OHIO LATE THIS
AFTERNOON.

AT 540 PM... SCATTERED THUNDERSTORMS... SOME WITH VERY HEAVY RAIN...
WERE OVER PARTS OF THE SOUTHWEST QUARTER OF OHIO. THIS ACTIVITY WAS
LOCATED FROM ABOUT 10 MILES NORTH OF CINCINNATI NEAR HAMILTON
NORTHEAST ALONG INTERSTATE 71 INTO THE COLUMBUS AREA.

THE STRONGEST STORMS WITHIN THIS AREA WERE LOCATED 5 MILES SOUTH OF
DAYTON IN SOUTHEAST MONTGOMERY COUNTY... AND 10 MILES SOUTHEAST OF
DAYTON IN SOUTHWEST GREENE COUNTY.

THIS AREA OF THUNDERSTORMS WAS MOVING EAST AT 35 MILES AN HOUR...
AND WILL MOVE THROUGH MUCH OF WARREN COUNTY AND INTO MUCH OF CLINTON
COUNTY IN SOUTHWEST OHIO BY 615 PM.

THESE STORMS HAVE A HISTORY OF PRODUCING TORRENTIAL DOWNPOURS IN
ADDITION TO NEARLY CONTINUOUS LIGHTNING STRIKES... AND HAVE THE
POTENTIAL TO PRODUCE SMALL HAIL AND WIND GUSTS TO AROUND 40 MILES
AN HOUR.

PEOPLE IN FAR SOUTHWEST OHIO... ESPECIALLY IN WARREN AND CLINTON
COUNTIES... SHOULD BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS
AND SEEK STRONG SHELTER IF THREATENING WEATHER APPROACHES.

STAY XTUNED TO NOAA WEATHER RADIO OR THE COMMERCIAL MEDIA FOR LATER
STATEMENTS AND POSSIBLE WARNINGS CONCERNING THESE THUNDERSTORMS.

MSL
Special weather statement, Jul 29, 6:45 PM EDT, 1 hour 55 minutes before
OHZ008-292345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CINCINNATI OH
645 PM EDT WED JUL 29 1992

THUNDERSTORMS PERSISTED OVER PARTS OF SOUTHWEST OHIO EARLY THIS EVENING.

AT 635 PM... SCATTERED THUNDERSTORMS... SOME WITH VERY HEAVY RAIN...
WERE OVER PARTS OF THE SOUTHWEST QUARTER OF OHIO. AN INDIVIDUAL STORM
WAS LOCATED NEAR THE INDIANA-OHIO BORDER WEST OF HAMILTON... WHILE A
LARGER AREA OF STORMS EXTENDED FROM 15 MILES NORTHEAST OF CINCINNATI
IN NORTHERN CLERMONT COUNTY NORTHEAST TO NEAR COLUMBUS AND NEWARK.

MOVEMENT OF THESE THUNDERSTORMS WAS EAST AT 35 MILES AN HOUR.

THE STORM LOCATED WEST OF HAMILTON WILL PASS THROUGH THE HAMILTON AND
MIDDLETOWN AREAS OF SOUTHWEST OHIO BY 700 PM... WHILE THE THUNDERSTORMS
NOW LOCATED OVER NORTHERN CLERMONT COUNTY AND SOUTHEAST CLINTON COUNTY
WILL MOVE INTO NORTHERN PARTS OF BROWN AND HIGHLAND COUNTIES IN
SOUTHWEST OHIO BY 700 PM.

THESE STORMS HAVE A HISTORY OF PRODUCING TORRENTIAL DOWNPOURS IN
ADDITION TO NEARLY CONTINUOUS LIGHTNING STRIKES... AND HAVE THE
POTENTIAL TO PRODUCE SMALL HAIL AND WIND GUSTS TO AROUND 40 MILES
AN HOUR.

PEOPLE IN FAR SOUTHWEST OHIO... ESPECIALLY IN BUTLER... BROWN AND
HIGHLAND COUNTIES... SHOULD BE ALERT TO RAPIDLY CHANGING WEATHER
CONDITIONS AND SEEK STRONG SHELTER IF THREATENING WEATHER APPROACHES.

OTHER SCATTERED SHOWERS AND THUNDERSTORMS EXTENDED FROM NEAR MUNCIE
IN EAST CENTRAL INDIANA EAST TO NEAR MANSFIELD IN CENTRAL OHIO...
AND WERE ALSO MOVING EAST AT 35 MILES AN HOUR.

STAY TUNED TO NOAA WEATHER RADIO OR THE COMMERCIAL MEDIA FOR LATER
STATEMENTS AND POSSIBLE WARNINGS CONCERNING THESE THUNDERSTORMS.

MSL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 9:59 PM EDTFlash Flood WarningILNHamilton61 min
Jul 30, 3:18 PM EDTSevere Thunderstorm WarningILNCrawford42 min
Jul 30, 3:46 PM EDTSevere Thunderstorm WarningILNRichland44 min
Jul 30, 4:31 PM EDTSevere Thunderstorm WarningILNAshland, Richland59 min
Jul 30, 4:55 PM EDTSevere Thunderstorm WarningILNCrawford65 min
Jul 30, 4:56 PM EDTFlash Flood WarningILNMercer3 hr
Jul 30, 5:42 PM EDTFlash Flood WarningILNAuglaize3 hr
Jul 30, 5:52 PM EDTFlash Flood WarningILNDarke3 hr
Jul 30, 6:45 PM EDTFlash Flood WarningILNMiami3 hr

Nearby

Flash Flood Warnings in Ohio, 1992Every flash flood warning in 1992

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.