Alert archive / Ohio / Flash Flood Warnings in 1990

Flash Flood Warning 41, NWS Cleveland, OH

July 15, 1990Mahoning County, Trumbull County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 15, 1990, 9:09 AM EDT for Mahoning County, Trumbull County, Ohio. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jul 15, 1990, 9:09 AM EDT (13:09 UTC)
Expired
Jul 15, 1990, 1:15 PM EDT
In force
4 hr
Issued by
NWS Cleveland, OH
Area
Whole counties

Counties Mahoning County, OH, Trumbull 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 12:00Z, 1.2 hours before the alert went out and 101 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 12:00Z on 1990-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 1990-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -39 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
31 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
687 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
-39 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KYNG 151309
FFWYNG
OHC155-099-151715-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
URBAN AND SMALL STREAM FLOOD WARNING 
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
909 AM EDT SUN JUL 15 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A URBAN AND SMALL 
STREAM FLOOD WARNING EFFECTIVE UNTIL 115 PM EDT FOR PEOPLE IN 
THE FOLLOWING COUNTIES

   IN THE NORTHEAST PART OF OHIO
      TRUMBULL...MAHONING

AT 910 AM EDT MANY ROADS REMAINED CLOSED ACROSS PORTIONS OF
TRUMBULL AND MAHONING COUNTIES IN NORTHEAST OHIO.  THE OFF RAMP
FROM I-80 TO ROUTE 762 IN HUBBARD TOWNSHIP IS CLOSED DUE TO HIGH
WATER.  ROUTE 62 ALSO IS CLOSED IN HUBBARD DUE TO BRIDGE WASHOUT.
ROUTE 224 BETWEEN ROUTE 7 AND GLENWOOD AVENUE IS CLOSED DUE TO
HIGH WATER.  THE GRAND RIVER AT ROUTES 87 AND 534 IS EXPECTED TO
RISE ABOVE ITS BANKS LATER THIS MORNING.

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 ABANDONED IMMEDIATELY.
MOVE TO HIGHER GROUND.

 AT 901 AM EDT WEATHER SERVICE RADAR INDICATED SCATTERED AREAS OF
 LIGHT RAIN ACROSS EASTERN OHIO AND WESTERN PENNSYLVANIA.  THE RAIN
 WAS MOVING NORTHEAST AT 25 MILES PER HOUR.

 DOXEY

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 9:19 PM EDTFlash Flood WarningCLEJefferson3 hr
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, 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.