Alert archive / Ohio / Flash Flood Warnings in 1998

Flash Flood Warning 161, NWS Pittsburgh, PA

July 1, 1998Coshocton County, Guernsey County, Tuscarawas County, Ohio

NWS Pittsburgh, PA issued this flash flood warning at Jul 1, 1998, 9:47 AM EDT for Coshocton County, Guernsey County, Tuscarawas County, Ohio. It was in force for 73 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 1, 1998, 9:47 AM EDT (13:47 UTC)
Expired
Jul 1, 1998, 11:00 AM EDT
In force
73 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Coshocton County, OH, Guernsey County, OH, Tuscarawas County, OH

The radar

The Pittsburgh radar (KPBZ), 123 km from the middle of the area, began a volume at 14:05 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, 1.8 hours before the alert went out and 131 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 1998-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 63 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 1998-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 square meters per square second.193958Sfc1 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
63 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
806 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
85 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
Jul 1, 2:53 AM EDTFlash Flood WarningPBZMonroe, Noble7 hr
Jul 1, 2:53 AM EDTFlash Flood WarningPBZCoshocton, Guernsey, Tuscarawas7 hr
Jul 1, 9:47 AM EDTFlash Flood WarningPBZNoble73 min

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.