Alert archive / Ohio / Flash Flood Warnings in 1991

Flash Flood Warning 2, NWS Wilmington, OH

March 22, 1991Warren County, Ohio

NWS Wilmington, OH issued this flash flood warning at Mar 22, 1991, 10:44 PM EST for Warren County, Ohio. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Mar 22, 1991, 10:44 PM EST (03:44 UTC)
Expired
Mar 23, 1991, 12:45 AM EST
In force
2 hr
Issued by
NWS Wilmington, OH
Area
Whole counties

County Warren County, OH

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 3.7 hours before the alert went out and 53 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 1991-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 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 1991-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1163 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
173 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 KCVG 230351 COR
FFWCVG
OHC165-230545-

BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING...CORRECTION...
NATIONAL WEATHER SERVICE CINCINNATI OH
1049 PM EST FRI MAR 22 1991

THE NATIONAL WEATHER SERVICE IN CINCINNATI HAS ISSUED A
FLOOD WARNING FOR SMALL STREAMS EFFECTIVE UNTIL 1245 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTY...

IN SOUTHWEST OHIO
          ...WARREN

AT 1035 PM EST THE WARREN COUNTY COMMUNICATIONS CENTER REPORTED CREEKS
WERE OVER THEIR BANKS AND ROADS COVERED BY WATER.

AT 1040 PM EST NATIONAL WEATHER SERVICE RADAR SHOWED RAIN HAD MOVED
OUT OF SOUTHWEST OHIO. HOWEVER WITH THE GROUND ALREADY SATURATED THERE
WILL BE RUNOFF FOR THE NEXT SEVERAL HOURS...ESPECIALLY IN SOUTHERN
WARREN COUNTY.


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.
JN
CORRECTED TO CHANGE THE TYPE OF WARNING

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, Mar 22, 9:11 PM EST, 1 hour 33 minutes before
OHZ008-INZ013-KYZ005-230400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CINCINNATI OH
910 PM EST FRI MAR 22 1991

A FLOOD WARNING IS IN EFFECT FOR THE COUNTIES OF SOUTHEAST INDIANA
FOR SMALL STREAM FLOODING UNTIL 11 O'CLOCK THIS EVENING. A FLOOD
WATCH REMAINS IN EFFECT FOR THE REMAINDER OF THE TRI STATE FOR TONIGHT.

AROUND 9 O'CLOCK THIS EVENING NATIONAL WEATHER SERVICE RADAR INDICATED
A LARGE AREA OF RAINSHOWERS AND THUNDERSTORMS THAT EXTENDED SOUTHWARD
ALONG THE WESTERN BORDER OF OHIO...  SOUTH TO LEXINGTON IN CENTRAL
KENTUCKY AND THEN FURTHER SOUTH TO BOWLING GREEN IN SOUTHERN KENTUCKY.

THUNDERSTORM ACTIVITY WAS BEGINNING TO TAPER OFF OVER SOUTHEAST INDIANA
AS THE BACK EDGE OF THE PRECIPITATION WAS ENDING FROM THE WEST. THE AREA
OF THUNDERSTORMS WAS MOVING EAST AROUND 30 MILES AN HOUR.

ALTHOUGH THE RAINFALL WAS COMING TO AN END RUNOFF WILL BECOME A PROBLEM
...MOSTLY OVER SOUTHEAST INDIANA...AS THUNDERSTORMS WITH VERY HEAVY RAIN
HAVE MOVED OVER THE AREA FOR THE PAST TWO HOURS.

IF YOU ARE DRIVING AT NIGHT ...PLEASE BE WARY OF STANDING WATER
OVER ROADS AND DO NOT ATTEMPT TO CROSS. ALSO...IF YOUR HOME IS IN
THE VICINITY OF A LOW LYING CREEK BED PLEASE BE ALERT TO -RAPIDLY
RISING WATER AND BE READY TO MOVE TO HIGHER GROUND.

MEDLIN

Nearby

Flash Flood Warnings in Ohio, 1991Every flash flood warning in 1991

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.