Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 65, NWS Pittsburgh, PA

June 27, 1995Beaver County, Lawrence County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 27, 1995, 4:23 PM EDT for Beaver County, Lawrence County, Pennsylvania. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 27, 1995, 4:23 PM EDT (20:23 UTC)
Expired
Jun 27, 1995, 6:30 PM EDT
In force
2 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Beaver County, PA, Lawrence County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.4 hours before the alert went out and 52 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 1995-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 609 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 1995-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.1939Sfc1 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
609 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
745 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIT 272023
FFWPIT
PAC073-007-272230-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
423 PM EDT TUE JUN 27 1995
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  630 PM EDT
FOR THE FOLLOWING LOCATIONS...
 
IN NORTHWEST PENNSYLVANIA
 
   ...LAWRENCE COUNTY
 
IN WESTERN PENNSYLVANIA
 
   ...BEAVER COUNTY.
 
AT 423 PM RADAR SHOWED OVER 2 INCHES OF RAIN FELL IN SOUTHERN LAWRENCE
AND NORTHERN BEAVER COUNTIES IN WESTERN PENNSYLVANIA. THE STORMS ARE
SLOW MOVING AND WILL CAUSE CREEKS TO RISE RAPIDLY.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 3:39 PM EDTSevere Thunderstorm WarningPBZBeaver51 min
Jun 27, 4:35 PM EDTFlash Flood WarningPBZMercer115 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.