Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 39, NWS Pittsburgh, PA

June 24, 1995Allegheny County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 24, 1995, 8:11 PM EDT for Allegheny County, Pennsylvania. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 24, 1995, 8:11 PM EDT (00:11 UTC)
Expired
Jun 24, 1995, 10:15 PM EDT
In force
2 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Allegheny County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 0.2 hours before the alert went out and 12 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 1995-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 613 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 00:00Z on 1995-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 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
613 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
786 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIT 250011
FFWPIT
PAC003-250215-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
811 PM EDT SAT JUN 24 1995
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1015 PM EDT
FOR THE FOLLOWING LOCATION...
 
IN WEST PENNSYLVANIA
 
   ...ALLEGHENY COUNTY
 
RADAR SHOWED VERY HEAVY RAINS OCCURRING WITH THE SEVERE
THUNDERSTORMS...ENOUGH TO CAUSE FLASH FLOODING. ALSO BEWARE OF DEADLY
LIGHTNING.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES OR LOW SPOTS IF WATER COVERS THE ROAD.
NEVER TRY TO CROSS A FLOWING STREAM...E"VEN A SMALL ONE...ON FOOT.
TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 8:23 PM EDTTornado WarningPBZAllegheny37 min
Jun 24, 8:59 PM EDTTornado WarningPBZAllegheny31 min
Jun 24, 9:16 PM EDTTornado WarningPBZWestmoreland44 min
Jun 24, 9:42 PM EDTSevere Thunderstorm WarningPBZFayette, Greene, Washington48 min
Jun 24, 9:53 PM EDTSevere Thunderstorm WarningPBZWestmoreland67 min
Jun 24, 9:56 PM EDTFlash Flood WarningPBZAllegheny2 hr
Jun 25, 1:22 PM EDTFlash Flood WarningPBZIndiana3 hr
Jun 25, 1:34 PM EDTSevere Thunderstorm WarningPBZWashington41 min
Jun 25, 1:45 PM EDTFlash Flood WarningPBZWashington3 hr
Jun 25, 2:08 PM EDTSevere Thunderstorm WarningPBZArmstrong52 min
Jun 25, 3:17 PM EDTFlash Flood WarningPBZArmstrong58 min
Jun 25, 3:17 PM EDTSevere Thunderstorm WarningPBZArmstrong58 min
Jun 25, 3:22 PM EDTFlash Flood WarningPBZWestmoreland68 min
Jun 25, 4:05 PM EDTFlash Flood WarningPBZArmstrong3 hr
Jun 25, 4:28 PM EDTFlash Flood WarningPBZWestmoreland92 min
Jun 25, 6:04 PM EDTFlash Flood WarningPBZFayette116 min
Jun 25, 6:43 PM EDTFlash Flood WarningPBZArmstrong2 hr

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.