Alert archive / Pennsylvania / Flash Flood Warnings in 1989

Flash Flood Warning 20, NWS Cleveland, OH

June 15, 1989Lawrence County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Jun 15, 1989, 11:02 AM EDT for Lawrence County, Pennsylvania. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 15, 1989, 11:02 AM EDT (15:02 UTC)
Expired
Jun 15, 1989, 2:15 PM EDT
In force
3 hr
Issued by
NWS Cleveland, OH
Area
Whole counties

County Lawrence County, PA

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, 3.0 hours before the alert went out and 68 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 1989-06-15Temperature 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 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 12:00Z on 1989-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
657 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
349 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 KYNG 151502
FFWYNG
PAC073-151600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
1102 AM EDT THU JUN 15 1989

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 1200 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE WEST PART OF PENNSYLVANIA
      SOUTHWEST LAWRENCE

AT 0938 AM EDT LAWENCE COUNTY ENGINEERS REPORTED
THE MAHONING RIVER BETWEEN UNIONVILLE AND SOUTH BEAVER
WAS ONE FOOT OVER THE BRIDGE ON COVERT ROAD.

A FLASH FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WAT4ER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.
TO ESCAPE RISING WATER MOVE TO HIGHER GROUND.

 JR

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, Jun 15, 6:24 AM EDT, 4 hours 38 minutes before
SEVERE WEATHER OUTLOOK FOR OHIO
NATIONAL WEATHER SERVICE CLEVELAND OH
625 AM EDT THU JUN 15 1989

THE NATIONAL SEVERE STORMS FORECAST CENTER IN KANSAS CITY SAYS THAT
SEVERE THUNDERSTORMS ARE NOT EXPECTED IN OHIO TODAY OR TONIGHT.

CHARNICK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 11:24 AM EDTFlash Flood WarningCLEElk3 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1989Every flash flood warning in 1989

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.