Alert archive / Ohio / Flash Flood Warnings in 1998

Flash Flood Warning 63, NWS Pittsburgh, PA

May 3, 1998Noble County, Ohio

NWS Pittsburgh, PA issued this flash flood warning at May 3, 1998, 4:42 PM EDT for Noble County, Ohio. It was in force for 5 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 3, 1998, 4:42 PM EDT (20:42 UTC)
Expired
May 3, 1998, 10:00 PM EDT
In force
5 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Noble County, OH

The radar

The Pittsburgh radar (KPBZ), 135 km from the middle of the area, began a volume at 20:42 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 12:00Z, 8.7 hours before the alert went out and 136 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 1998-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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 12:00Z on 1998-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.1939Sfc1 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
4 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
505 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
70 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 032042
FFWPIT
OHC121-040200-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
442 PM EDT SUN MAY 3 1998

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

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

* UNTIL 1000 PM EDT

* AT RUNOFF FROM THE RAIN SATURDAY CONTINUES TO CAUSE ROAD
  FLOODING. PARTS OF ROUTES 821 AND 260 ARE FLOODED.

* ADDITIONAL RAIN APPROACHING FROM THE WEST WILL AGGRAVATE
  THE FLOODING.

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

&

The office that day

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

IssuedProductOfficeCountiesLasted
May 2, 9:50 PM EDTFlash Flood WarningPBZCoshocton, Guernsey, Muskingum, Noble, Tuscarawas8 hr
May 3, 3:50 AM EDTFlash Flood WarningPBZGuernsey, Monroe, Muskingum, Noble7 hr
May 3, 3:50 AM EDTFlash Flood WarningPBZCoshocton, Tuscarawas7 hr
May 3, 10:39 AM EDTFlash Flood WarningPBZGuernsey, Monroe, Muskingum, Noble5 hr
May 3, 10:50 AM EDTFlash Flood WarningPBZCoshocton70 min
May 3, 3:25 PM EDTFlash Flood WarningPBZMonroe7 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.