Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 27, NWS Wilmington, OH

July 12, 1990Crawford County, Richland County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jul 12, 1990, 5:30 AM EDT for Crawford County, Richland County, Ohio. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 12, 1990, 5:30 AM EDT (09:30 UTC)
Expired: Jul 12, 1990, 8:30 AM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Whole counties

Counties Crawford County, OH, Richland 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, 9.5 hours before the alert went out and 161 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 KMFD 120935
FFWMFD
OHC033-139-121230-

BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE MANSFIELD OH
530 AM EDT THU JUL 12 1990

THE NATIONAL WEATHER SERVICE IN MANSFIELD HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL 830 AM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTH CENTRAL OHIO
                      RICHLAND...CRAWFORD                  

HEAVY RAIN OVERNIGHT HAS CAUSED MANY ROADS IN THE CENTRAL HIGHLANDS
TO BECOME COVERED WITH WATER MAKING DRIVING HAZARDOUS. OVER 21/2
(2.57) INCHES OF RAIN FELL OVERNIGHT AT MANSFIELD-LAHM AIRPORT AS OF
5 AM EDT.

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.


BANYAS

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 12, 2:24 AM EDT, 3 hours 6 minutes before

OHZ005-010-120720-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTON OH
220 AM EDT THU JUL 12 1990

THUNDERSTORMS WITH HEAVY RAIN AND SMALL HAIL MOVING ACROSS THE
MIAMI VALLEY AT 215 AM EDT.

AT 215 AM EDT WEATHER SERVICE RADAR WAS INDICATING SHOWERS AND
THUNDERSTORMS...SOME WITH HEAVY RAIN ACROSS PREBLE...DARKE...
MIAMI...AND MONTGOMERY COUNTIES OF WESTERN OHIO. SHERIFFS
DEPARTMENT OFFICIALS REPORTED DIME SIZE HAIL IN SOUTHERN DARKE
COUNTY AT 205 AM EDT AND HEAVY RAIN REDUCING VISIBLITY TO ONE
TENTH OF A MILE. THE THUNDERSTORMS WERE MOVING EAST AT 20 MPH.

PEOPLE ACROSS THE MIAMI VALLEY SHOULD BE ALERT TO RISING WATER
AND PONDING OF STREETS IN LOW LYING AREAS AS THE THUNDERSTORMS
MOVE THROUGH THE MIAMI VALLEY.

PADGETT

Special weather statement, Jul 12, 2:48 AM EDT, 2 hours 42 minutes before

OHZ008-INZ013-KYZ005-120800-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CINCINNATI OH
248 AM EDT THU JUL 12 1990

AT 230 AM WEATHER SERVICE RADAR SHOWED A LARGE AREA OF RAIN WITH
IMBEDDED THUNDERSTORMS OVER CENTRAL AND SOUTHERN INDIANA...AND WESTERN
OHIO.

THE RAIN AREA EXTENDED FROM COLUMBUS OHIO...SOUTHWEST TO NEAR
EVANSVILLE INDIANA.

THE HEAVIEST OF THE RAIN WAS FROM RICHMOND INDIANA TO 25 MILES NORTHWEST
OF LOUISVILLE KENTUCKY.

MOVEMENT OF THE RAIN WAS TO THE EAST AT 25 MILES AN HOUR.

THUNDERSTORMS WITH HEAVY DOWNPOURS WILL MOVE INTO THE CINCINNATI TRISTATE
AREA BY 4AM AND LAST UNTIL DAYBREAK. HEAVY RAIN IS LIKELY THIS MORNING
WITH AMOUNTS OF ONE TO TWO INCHES POSSIBLY LOCALLY.

IF YOU ARE OUT DRIVING THIS MORNING AND ENCOUNTER ANY STANDING OR
FLOWING WATER ACROSS STREETS OR ROADS...PLEASE AVOID THEM AND MOVE
TO HIGHER GROUND.

A FLOOD WATCH REMAINS IN EFFECT FOR ALL OF SOUTHWESTERN OHIO FOR THE
REST OF THIS MORNING.

MANUEL

Special weather statement, Jul 12, 4:47 AM EDT, 43 minutes before

OHZ008-INZ013-KYZ005-121000-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CINCINNATI OH
446 AM EDT THU JUL 12 1990

THUNDERSTORMS WITH HEAVY RAIN AND SMALL HAIL WERE CROSSING THE TRISTATE
THIS MORNING.

AT 430 AM WEATHER SERVICE RADAR SHOWED A LARGE AREA OF RAIN WITH IMBEDDED
THUNDERSTORMS OVER WESTERN OHIO...CENTRAL AND SOUTHERN INDIANA.

THE HEAVIEST OF THE RAIN WAS FROM VERSAILLES INDIANA TO CORINTH KENTUCKY OR
ABOUT 25 MILES SOUTH AND WEST OF CINCINNATI OHIO.

MOVEMENT OF THE RAIN WAS TO THE EAST AT 25 MILES AN HOUR.

THESE THUNDERSTORMS WILL PRODUCE HEAVY DOWNPOURS AND POSSILE HAIL AS
THEY CROSS THE TRISTATE AREA THIS MORNING. AMOUNTS OF ONE TO TWO INCHES
OF RAIN ARE ALSO POSSIBLE.

IF YOU ARE OUT DRIVING THIS MORNING AND ENCOUNTER ANY STANDING OR
FLOWING WATER ACROSS STREETS OR ROADS...PLEASE AVOID THEM AND MOVE
TO HIGHER GROUND.

A FLOOD WATCH REMAINS IN EFFECT FOR ALL OF SOUTHWESTERN OHIO FOR T~HE
REST OF THIS MORNING.

MANUEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 10:50 PM EDT	Flash Flood Warning	ILN	Montgomery, Preble	3 hr
Jul 11, 10:50 PM EDT	Flash Flood Warning	ILN	Clark	3 hr
Jul 12, 12:01 AM EDT	Flash Flood Warning	ILN	Ashland	119 min
Jul 12, 5:21 AM EDT	Flash Flood Warning	ILN	Ashland	3 hr
Jul 12, 8:30 AM EDT	Flash Flood Warning	ILN	Ashland, Richland	2 hr
Jul 12, 9:10 AM EDT	Flash Flood Warning	ILN	Crawford, Morrow	3 hr
Jul 12, 9:10 AM EDT	Flash Flood Warning	ILN	Knox	3 hr
Jul 12, 10:20 AM EDT	Flash Flood Warning	ILN	Ashland, Crawford, Knox, Morrow, Richland	5 hr
Jul 12, 10:29 AM EDT	Flash Flood Warning	ILN	Greene	3 hr

Nearby

Flash Flood Warnings in Ohio, 1990 Every 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.