Alert archive / Ohio / Flash Flood Warnings in 1998

Flash Flood Warning 46, NWS Pittsburgh, PA

May 2, 1998Guernsey County, Noble County, Ohio

NWS Pittsburgh, PA issued this flash flood warning at May 2, 1998, 4:57 AM EDT for Guernsey County, Noble County, Ohio. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 2, 1998, 4:57 AM EDT (08:57 UTC)
Expired
May 2, 1998, 9:00 AM EDT
In force
4 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Guernsey County, OH, Noble County, OH

The radar

The Pittsburgh radar (KPBZ), 127 km from the middle of the area, began a volume at 08:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 9.0 hours before the alert went out and 129 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 1998-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 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 1998-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939Sfc1 km3 km6 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
661 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
16 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 KPIT 020859
FFWPIT
OHC059-121-021300-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
457 AM EDT SAT MAY 2 1998

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* FLOOD WARNING FOR...
  GUERNSEY COUNTY IN EAST CENTRAL OHIO
  NOBLE COUNTY IN EAST CENTRAL OHIO

* UNTIL 900 AM EDT

* THROUGHOUT EARLY SATURDAY MORNING...NATIONAL WEATHER SERVICE
  DOPPLER RADAR INDICATED AN AREA OF VERY HEAVY RAIN OVER A LARGE
  PORTION OF GUERNSEY AND NOBLE COUNTIES...MOVING WEST NORTHWEST AT
  10 MPH. IN ADDITION COUNTY SHERIFFS OFFICES REPORTED FLOODING IN
  LOW LYING AREAS AND OVER LOCAL ROADWAYS.

* MODERATE TO SOMETIMES HEAVY RAIN HAS FALLEN OVER GUERNSEY COUNTY
  FOR MOST OF THIS EARLY SATURDAY MORNING. THE MOVEMENT OF THE RAIN
  IS VERY SLOW AND ADDITIONAL MODERATE TO HEAVY RAINFALL IS
  EXPECTED. IN THE CITY OF CAMBRIDGE THE SHERIFFS OFFICE REPORTED
  FLOODING IN LOW AREAS. IN NOBLE COUNTY DUCK CREEK WAS REPORTED
  OVER ITS BANKS ON STATE ROUTES 821 AND 339 SOUTH OF DEXTER CITY.


THE FLOOD WATCH CONTINUE IN EFFECT UNTIL 11AM...MEANING THERE IS
THE POTENTIAL FOR ADDITIONAL FLOODING. DON'T DRIVE INTO AREAS WHERE
WATER COVERS THE ROAD!

END

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 2, 5:30 AM EDTFlash Flood WarningPBZCoshocton4 hr
May 2, 5:30 AM EDTFlash Flood WarningPBZMonroe4 hr
May 2, 8:05 AM EDTFlash Flood WarningPBZMuskingum4 hr
May 2, 9:03 AM EDTFlash Flood WarningPBZMonroe, Noble3 hr
May 2, 9:03 AM EDTFlash Flood WarningPBZCoshocton, Guernsey3 hr
May 2, 12:00 PM EDTFlash Flood WarningPBZGuernsey, Monroe, Muskingum, Noble4 hr
May 2, 3:45 PM EDTFlash Flood WarningPBZCoshocton, Guernsey, Muskingum, Noble6 hr
May 2, 3:45 PM EDTFlash Flood WarningPBZTuscarawas6 hr
May 2, 3:45 PM EDTFlash Flood WarningPBZMonroe6 hr

Nearby

Flash Flood Warnings in Ohio, 1998Every flash flood warning in 1998

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; radar from the NEXRAD Level II archive.