Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 69, NWS Pittsburgh, PA

June 29, 1995Mercer County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 29, 1995, 6:16 PM EDT for Mercer County, Pennsylvania. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Jun 29, 1995, 6:16 PM EDT (22:16 UTC)
Expired
Jun 29, 1995, 7:15 PM EDT
In force
59 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Mercer County, PA

The radar

The Pittsburgh radar (KPBZ), 86 km from the middle of the area, began a volume at 22:19 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, 10.3 hours before the alert went out and 100 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 1995-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 264 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 1995-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 square meters per square second.193958Sfc1 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
264 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
859 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
152 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 292216
FFWPIT
PAC085-292315-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
616 PM EDT THU JUN 29 1995
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  715 PM EDT
FOR THE FOLLOWING LOCATION...
 
IN NORTHWEST PENNSYLVANIA
 
   ...MERCER COUNTY
 
RADAR INDICATES THAT NEARLY 2 INCHES OF RAIN HAS FALLEN IN SOUTHWEST
MERCER COUNTY AROUND THE WEST MIDDLESEX TO FARRELL PAREAS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 5:52 PM EDTSevere Thunderstorm WarningPBZBeaver68 min
Jun 29, 5:57 PM EDTSevere Thunderstorm WarningPBZMercer63 min
Jun 29, 6:28 PM EDTFlash Flood WarningPBZBeaver, Washington62 min
Jun 29, 6:49 PM EDTFlash Flood WarningPBZAllegheny, Beaver, Butler56 min
Jun 29, 6:49 PM EDTSevere Thunderstorm WarningPBZAllegheny, Beaver, Butler56 min
Jun 29, 7:46 PM EDTSevere Thunderstorm WarningPBZFayette, Greene59 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.