Alert archive / Ohio / Flash Flood Warnings in 1998

Flash Flood Warning 57, NWS Pittsburgh, PA

May 2, 19985 counties in Ohio

NWS Pittsburgh, PA issued this flash flood warning at May 2, 1998, 9:50 PM EDT for 5 counties in Ohio. It was in force for 8 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, 9:50 PM EDT (01:50 UTC)
Expired
May 3, 1998, 6:00 AM EDT
In force
8 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Coshocton County, OH, Guernsey County, OH, Muskingum County, OH, Noble County, OH, Tuscarawas County, OH

The radar

The Pittsburgh radar (KPBZ), 131 km from the middle of the area, began a volume at 01:54 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, 1.8 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 00:00Z on 1998-05-03Temperature 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 00:00Z on 1998-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
511 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
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
May 3, 4:42 PM EDTFlash Flood WarningPBZNoble5 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.