Alert archive / Pennsylvania / Flash Flood Warnings in 2002

Flash Flood Warning 52, NWS Pittsburgh, PA

June 14, 2002Butler County, Lawrence County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 14, 2002, 5:06 AM EDT for Butler County, Lawrence County, Pennsylvania. It was in force for 114 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 14, 2002, 5:06 AM EDT (09:06 UTC)
Expired
Jun 14, 2002, 7:00 AM EDT
In force
114 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Butler County, PA, Lawrence County, PA

The radar

The Pittsburgh radar (KPBZ), 47 km from the middle of the area, began a volume at 09:05 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 00:00Z, 9.1 hours before the alert went out and 60 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 2002-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 832 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 2002-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
832 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
696 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KPBZ 140913
FFWPBZ
PAC019-073-141100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...REPEAT TRANSMISSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
506 AM EDT FRI JUN 14 2002

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BUTLER COUNTY IN PENNSYLVANIA
  LAWRENCE COUNTY IN PENNSYLVANIA

* UNTIL 700 AM EDT

* AT 504 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED HEAVY RAIN 
FALLING REPEATEDLY OVER THE SAME AREA...PRIMARILY THE SOUTHEAST PART OF 
LAWRENCE COUNTY...AND NORTHERN BUTLER COUNTY. ADDITIONAL HEAVY RAIN 
WILL MOVE INTO THESE SATURATED PARTS OF LAWRENCE AND BUTLER COUNTIES 
BEFORE 6:00 AM.

<<CALL TO ACTION>>DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE
WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW
YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 5:13 AM EDTFlash Flood WarningPBZButler, Lawrence107 min
Jun 14, 9:20 AM EDTFlash Flood WarningPBZIndiana3 hr
Jun 14, 6:49 PM EDTSevere Thunderstorm WarningPBZWashington26 min
Jun 14, 7:55 PM EDTSevere Thunderstorm WarningPBZAllegheny65 min

Nearby

Flash Flood Warnings in Pennsylvania, 2002Every flash flood warning in 2002

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.