Alert archive / Pennsylvania / Flash Flood Warnings in 1994

Flash Flood Warning 41, NWS Pittsburgh, PA

August 2, 1994Butler County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Aug 2, 1994, 3:02 PM EDT for Butler County, Pennsylvania. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Aug 2, 1994, 3:02 PM EDT (19:02 UTC)
Expired
Aug 2, 1994, 4:00 PM EDT
In force
58 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Butler County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.0 hours before the alert went out and 58 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 1994-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1337 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 1994-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
1337 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
864 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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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
Aug 2, 12:31 PM EDTSevere Thunderstorm WarningPBZAllegheny, Westmoreland59 min
Aug 2, 1:48 PM EDTSevere Thunderstorm WarningPBZButler, Venango57 min
Aug 2, 1:58 PM EDTSevere Thunderstorm WarningPBZAllegheny47 min
Aug 2, 3:07 PM EDTFlash Flood WarningPBZAllegheny53 min
Aug 2, 6:00 PM EDTFlash Flood WarningPBZFayette2 hr
Aug 2, 6:08 PM EDTFlash Flood WarningPBZWestmoreland2 hr
Aug 2, 6:08 PM EDTSevere Thunderstorm WarningPBZWestmoreland2 hr
Aug 2, 5:14 PM EDTSevere Thunderstorm WarningPBZMarion, Monongalia2 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1994Every flash flood warning in 1994

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.