Alert archive / Pennsylvania / Flash Flood Warnings in 1994

Flash Flood Warning 15, NWS Pittsburgh, PA

March 9, 1994Fayette County, Greene County, Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Mar 9, 1994, 11:41 PM EST for Fayette County, Greene County, Westmoreland County, Pennsylvania. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Mar 9, 1994, 11:41 PM EST (04:41 UTC)
Expired
Mar 10, 1994, 4:00 AM EST
In force
4 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Fayette County, PA, Greene County, PA, Westmoreland County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 4.7 hours before the alert went out and 50 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 1994-03-10Temperature 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 1994-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 593 square meters per square second.1939587897117Sfc1 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
482 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
593 m²/s²
0-3 km storm-relative helicity
665 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
Mar 10, 12:35 AM ESTFlash Flood WarningPBZWashington6 hr
Mar 10, 12:35 AM ESTFlash Flood WarningPBZAllegheny6 hr
Mar 10, 3:47 AM ESTFlash Flood WarningPBZGreene3 hr
Mar 10, 12:35 AM ESTFlash Flood WarningPBZMarshall6 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.