Alert archive / Ohio / Flash Flood Warnings in 1998

Flash Flood Warning 19, NWS Pittsburgh, PA

January 9, 1998Muskingum County, Ohio

NWS Pittsburgh, PA issued this flash flood warning at Jan 9, 1998, 12:02 AM EST for Muskingum County, Ohio. It was in force for 3 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
Jan 9, 1998, 12:02 AM EST (05:02 UTC)
Expired
Jan 9, 1998, 3:00 AM EST
In force
3 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Muskingum County, OH

The radar

The Pittsburgh radar (KPBZ), 159 km from the middle of the area, began a volume at 05:03 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, 5.0 hours before the alert went out and 164 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 1998-01-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 598 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 1998-01-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.1939587897117136Sfc1 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
598 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
551 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIT 090505
FFWPIT
OHC013-059-119-090800-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
1202 AM EST FRI JAN 9 1998
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  300 AM EST
FOR THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL OHIO
 
   ...BELMONT COUNTY...GUERNSEY COUNTY...MUSKINGUM COUNTY
 
AT MIDNIGHT THUNDERSTORMS WITH HEAVY RAIN WERE OCCURRING OVER EAST
CENTRAL OHIO. STREAMS IN THESE AREAS ARE ALREADY BANK FULL AND
ADDITIONAL RAINFALL WILL LIKELY CAUSE THEM TO FLOOD. A QUICK INCH IN
LESS THAN AN HOUR WILL RESULT IN FLASH FLOODING!
 
DO NOT DRIVE INTO AREAS WHERE THE WATER COVERS THE ROAD.  THE WATER
MAY BE nTOO DEEP TO ALLOW YOUR CAR TO CROSS SAFELY.  VEHICLES CAUGHT
IN RISING WATER SHOULD BE ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
PM

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 8, 11:15 PM ESTFlash Flood WarningPBZMonroe, Noble3 hr
Jan 9, 12:02 AM ESTFlash Flood WarningPBZBelmont, Guernsey3 hr
Jan 9, 12:22 AM ESTSevere Thunderstorm WarningPBZMonroe68 min
Jan 9, 12:42 AM ESTFlash Flood WarningPBZHarrison, Jefferson3 hr
Jan 9, 1:10 AM ESTSevere Thunderstorm WarningPBZBelmont65 min
Jan 9, 1:56 AM ESTFlash Flood WarningPBZMonroe3 hr
Jan 9, 3:13 AM ESTFlash Flood WarningPBZBelmont107 min
Jan 9, 4:55 AM ESTFlash Flood WarningPBZBelmont, Monroe4 hr
Jan 9, 6:59 AM ESTFlash Flood WarningPBZColumbiana3 hr
Jan 9, 8:35 AM ESTFlash Flood WarningPBZTuscarawas13 hr
Jan 9, 11:24 AM ESTFlash Flood WarningPBZTuscarawas12 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.