Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 26, NWS Cleveland, OH

July 14, 1990Jefferson County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 14, 1990, 9:19 PM EDT for Jefferson County, Ohio. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 14, 1990, 9:19 PM EDT (01:19 UTC)
Expired
Jul 15, 1990, 12:15 AM EDT
In force
3 hr
Issued by
NWS Cleveland, OH
Area
Whole counties

County Jefferson 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

Pittsburgh, PA (KPIT), launched 00:00Z, 1.3 hours before the alert went out and 56 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, Pittsburgh, PA at 00:00Z on 1990-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 196 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, Pittsburgh, PA at 00:00Z on 1990-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 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
196 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
784 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
187 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCAK 150121
FFWCAK
OHC081-150415-
 
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE AKRON OH
919 PM EDT P JUL 14 1990
 
THE NATIONAL WEATHER SERVICE IN AKRON HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL 1215 AM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN EAST CENTRAL OHIO
          ...JEFFERSON
 
WEATHER SERVICE RADAR SHOWED A NUMBER OF THUNDERSTORMS WITH LOCALLY
HEAVY RAIN HAVE MOVED THROUGH JEFFERSON COUNTY SINCE 6 PM. MORE RAIN WASMOVING INTO THE COUNTY FROM THE SOUTH. WITH STREAMS AND CREEKS ALREADY
HIGH... THIS ADDED RAINFALL WILL LIKELY CAUSE SOME FLOODING.
 
 
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.

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 14, 8:40 PM EDT, 39 minutes before
OHZ004-007-150200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AKRON CANTON OH
840 PM EDT SAT JUL 14 1990

HEAVY RAINS WERE FALLING ON PARTS OF EASTERN OHIO THIS EVENING.

AT 830 PM WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS WITH
LOCALLY HEAVY RAIN OVER NORTHERN JEFFERSON... EASTERN CARROLL AND
COLUMBINA COUNTIES. THE THUNDERSTORMS WERE MOVING NORTH AT 20 MPH.

MANY STREAMS AND CREEKS IN THAT AREA OF OHIO WERE RUNNING AT NEAR
BANKFULL... SO IF THE HEAVY RAIN LASTS MUCH LONGER THERE COULD BE SOME
FLOODING.

IF YOU LIVE NEAR A STREAM IN EASTERN OHIO... BE ESPECIALLY ALERT THIS
EVENING. YOU MAY HAVE TO ACT QUICKLY IF FLOODING OCCURS.

RN
FK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 10:33 PM EDTFlash Flood WarningCLEColumbiana, Mahoning, Trumbull3 hr
Jul 15, 12:12 AM EDTFlash Flood WarningCLEJefferson2 hr
Jul 15, 1:33 AM EDTFlash Flood WarningCLEColumbiana57 min
Jul 15, 2:31 AM EDTFlash Flood WarningCLEColumbiana4 hr
Jul 15, 2:45 AM EDTFlash Flood WarningCLEJefferson3 hr
Jul 15, 3:10 AM EDTFlash Flood WarningCLEMahoning3 hr
Jul 15, 6:31 AM EDTFlash Flood WarningCLEColumbiana59 min
Jul 15, 9:09 AM EDTFlash Flood WarningCLEMahoning, Trumbull4 hr
Jul 15, 12:03 PM EDTFlash Flood WarningCLEBelmont, Harrison, Jefferson4 hr
Jul 15, 12:03 PM EDTFlash Flood WarningCLECarroll4 hr
Jul 15, 12:36 PM EDTFlash Flood WarningCLEColumbiana2 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.