Alert archive / Pennsylvania / Flash Flood Warnings in 1994

Flash Flood Warning 27, NWS Pittsburgh, PA

April 10, 1994Greene County, Pennsylvania; Marshall County, West Virginia

NWS Pittsburgh, PA issued this flash flood warning at Apr 10, 1994, 10:00 AM EDT for Greene County, Pennsylvania; Marshall County, West Virginia. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Apr 10, 1994, 10:00 AM EDT (14:00 UTC)
Expired
Apr 10, 1994, 3:00 PM EDT
In force
5 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Greene County, PA, Marshall County, WV

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 2.0 hours before the alert went out and 68 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 1994-04-10Temperature 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 12:00Z on 1994-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 290 square meters per square second.1939587897Sfc1 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
682 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
290 m²/s²
0-3 km storm-relative helicity
404 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
Apr 10, 10:00 AM EDTFlash Flood WarningPBZFayette5 hr
Apr 10, 2:10 PM EDTFlash Flood WarningPBZWetzel4 hr
Apr 10, 6:00 PM EDTFlash Flood WarningPBZWetzel4 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1994Flash Flood Warnings in West Virginia, 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.