Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 13, NWS Pittsburgh, PA

June 3, 1995Allegheny County, Beaver County, Butler County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 3, 1995, 4:45 PM EDT for Allegheny County, Beaver County, Butler County, Pennsylvania. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 3, 1995, 4:45 PM EDT (20:45 UTC)
Expired
Jun 3, 1995, 6:45 PM EDT
In force
2 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Allegheny County, PA, Beaver County, PA, Butler County, PA

The radar

The Pittsburgh radar (KPBZ), 21 km from the middle of the area, began a volume at 20:44 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, 8.8 hours before the alert went out and 31 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 1995-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 323 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 1995-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.19395878Sfc1 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
323 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
780 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KPIT 032046
FFWPIT
PAC003-007-019-032245-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
445 PM EDT SAT JUN 3 1995
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 3, 2:28 PM EDTFlash Flood WarningPBZVenango3 hr
Jun 3, 3:37 PM EDTSevere Thunderstorm WarningPBZBeaver, Lawrence83 min
Jun 3, 4:03 PM EDTSevere Thunderstorm WarningPBZButler57 min
Jun 3, 4:40 PM EDTSevere Thunderstorm WarningPBZAllegheny, Washington65 min
Jun 3, 5:13 PM EDTFlash Flood WarningPBZVenango3 hr
Jun 3, 5:58 PM EDTSevere Thunderstorm WarningPBZIndiana47 min

Nearby

Flash Flood Warnings in Pennsylvania, 1995Every flash flood warning in 1995

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.