Alert archive / Pennsylvania / Flash Flood Warnings in 1993

Flash Flood Warning 17, NWS Pittsburgh, PA

July 29, 1993Fayette County, Greene County, Washington County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jul 29, 1993, 1:06 AM EDT for Fayette County, Greene County, Washington County, Pennsylvania. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 29, 1993, 1:06 AM EDT (05:06 UTC)
Expired
Jul 29, 1993, 4:00 AM EDT
In force
3 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Fayette County, PA, Greene County, PA, Washington County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 5.1 hours before the alert went out and 47 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 1993-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2503 joules per kilogram.LCLEL10008507005003002001001 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 1993-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
2503 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1289 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
1.1
Supercell composite
9.5

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 28, 9:02 PM EDTSevere Thunderstorm WarningPBZClarion58 min
Jul 28, 9:38 PM EDTFlash Flood WarningPBZClearfield107 min
Jul 28, 9:45 PM EDTSevere Thunderstorm WarningPBZButler75 min
Jul 28, 10:06 PM EDTSevere Thunderstorm WarningPBZArmstrong, Indiana, Westmoreland69 min
Jul 28, 10:06 PM EDTSevere Thunderstorm WarningPBZBeaver, Washington69 min
Jul 28, 10:56 PM EDTSevere Thunderstorm WarningPBZCambria, Somerset64 min
Jul 28, 10:56 PM EDTSevere Thunderstorm WarningPBZFayette64 min
Jul 29, 12:34 AM EDTSevere Thunderstorm WarningPBZBedford26 min
Jul 29, 12:43 AM EDTSevere Thunderstorm WarningPBZFayette47 min
Jul 29, 1:06 AM EDTFlash Flood WarningPBZMarshall, Ohio3 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1993Every flash flood warning in 1993

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.