Alert archive / Pennsylvania / Flash Flood Warnings in 2015

Flash Flood Warning 13, NWS Pittsburgh, PA

June 14, 2015Beaver County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 14, 2015, 9:37 PM EDT for Beaver County, Pennsylvania. It was in force for 8 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 14, 2015, 9:37 PM EDT (01:37 UTC)
Expired
Jun 15, 2015, 5:45 AM EDT
In force
8 hr
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Flood severity
None

County Beaver County, PA

The radar

The Pittsburgh radar (KPBZ), 12 km from the middle of the area, began a volume at 01:38 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.

What was reported inside it

TimeReportWhereRemark
Jun 15, 1:12 AM EDTFLASH FLOOD2 Ne Blackhawk, PADEHAVEN ROAD IN SOUTH BEAVER TOWNSHIP CLOSED DUE TO FLOODING

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 00:00Z, 1.6 hours before the alert went out and 29 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 2015-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 898 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 2015-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 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
898 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1121 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
251 m²/s²
Significant tornado parameter
0.7
Supercell composite
10.1

Open this sounding in Storm Lab

The text

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

302 
WGUS51 KPBZ 150138
FFWPBZ
PAC007-150445-
/O.NEW.KPBZ.FF.W.0013.150615T0137Z-150615T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
937 PM EDT SUN JUN 14 2015

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BEAVER COUNTY IN WESTERN PENNSYLVANIA...

* UNTIL 1245 AM EDT
    
* AT 937 PM EDT...LOCAL LAW ENFORCEMENT REPORTED NUMEROUS FLOODED 
  ROADS AND A MUDSLIDE. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ALIQUIPPA...BEAVER FALLS...MONACA...ECONOMY...AMBRIDGE...NEW
  BRIGHTON...BEAVER...BADEN...ROCHESTER...OHIOVILLE...HARMONY
  TOWNSHIP...MIDLAND...INDUSTRY...LEETSDALE...SHIPPINGPORT...
  PATTERSON TOWNSHIP...CONWAY...FREEDOM...BRIDGEWATER AND PATTERSON
  HEIGHTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

PLEASE REPORT FLOODING BY CALLING 412-262-1988...POSTING TO THE
NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER AT NWSPITTSBURGH. 
&&

LAT...LON 4076 8016 4061 8017 4061 8018 4060 8019
      4048 8035 4048 8051 4077 8050

$$
4 follow-up statements
734 
WGUS71 KPBZ 150214
FFSPBZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1013 PM EDT SUN JUN 14 2015

PAC007-150445-
/O.CON.KPBZ.FF.W.0013.000000T0000Z-150615T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEAVER PA-
1013 PM EDT SUN JUN 14 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT FOR
BEAVER COUNTY...

AT 1013 PM EDT...LOCAL LAW ENFORCEMENT REPORTS ROADS CLOSED AND MUD 
SLIDES IN THE WARNED AREA. MORE THUNDERSTORMS ARE EXPECTED TO MOVE 
THROUGH OVERNIGHT. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ALIQUIPPA...BEAVER FALLS...MONACA...ECONOMY...AMBRIDGE...NEW
BRIGHTON...BEAVER...BADEN...ROCHESTER...OHIOVILLE...HARMONY
TOWNSHIP...MIDLAND...INDUSTRY...LEETSDALE...SHIPPINGPORT...PATTERSON
TOWNSHIP...CONWAY...FREEDOM...BRIDGEWATER AND PATTERSON HEIGHTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

PLEASE REPORT FLOODING BY CALLING 412-262-1988...POSTING TO THE
NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER AT NWSPITTSBURGH. 
&&

LAT...LON 4076 8016 4061 8017 4061 8018 4060 8019
      4048 8035 4048 8051 4077 8050

$$
281 
WGUS51 KPBZ 150432
FFWPBZ
PAC007-150745-
/O.EXT.KPBZ.FF.W.0013.000000T0000Z-150615T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
1229 AM EDT MON JUN 15 2015

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  BEAVER COUNTY IN WESTERN PENNSYLVANIA...

* UNTIL 345 AM EDT
    
* AT 1229 AM EDT...LOCAL LAW ENFORCEMENT REPORTED NUMEROUS ROADS 
  CLOSED IN THE WARNING AREA. MORE THUNDERSTORMS WITH HEAVY RAINFALL 
  ARE EXPECTED TO MOVE THROUGH OVERNIGHT.
  

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ALIQUIPPA...BEAVER FALLS...MONACA...ECONOMY...AMBRIDGE...NEW
  BRIGHTON...BEAVER...BADEN...ROCHESTER...OHIOVILLE...HARMONY
  TOWNSHIP...MIDLAND...INDUSTRY...LEETSDALE...SHIPPINGPORT...
  PATTERSON TOWNSHIP...CONWAY...FREEDOM...BRIDGEWATER AND PATTERSON
  HEIGHTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

PLEASE REPORT FLOODING BY CALLING 412-262-1988...POSTING TO THE
NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER AT NWSPITTSBURGH. 
&&

LAT...LON 4076 8016 4061 8017 4061 8018 4060 8019
      4048 8035 4048 8051 4077 8050

$$
757 
WGUS51 KPBZ 150716
FFWPBZ
PAC007-150945-
/O.EXT.KPBZ.FF.W.0013.000000T0000Z-150615T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
316 AM EDT MON JUN 15 2015

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  BEAVER COUNTY IN WESTERN PENNSYLVANIA...

* UNTIL 545 AM EDT
    
* AT 314 AM EDT... DOPPLER RADAR INDICATED MORE HEAVY RAIN OVER THE 
  THE WARNED AREA. THIS COULD RESULT IN MORE FLASH FLOODING ACROSS 
  LOCATIONS. EXCESSIVE RAINFALL OVER THE WARNED AREA CAN CAUSE 
  FURTHER MUD SLIDES NEAR STEEP TERRAIN. THE MUD SLIDE CAN CONSIST 
  OF ROCK... MUD...VEGETATION AND OTHER LOOSE MATERIALS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ALIQUIPPA...BEAVER FALLS...MONACA...ECONOMY...AMBRIDGE...NEW
  BRIGHTON...BEAVER...BADEN...ROCHESTER...OHIOVILLE...HARMONY
  TOWNSHIP...MIDLAND...INDUSTRY...LEETSDALE...SHIPPINGPORT...
  PATTERSON TOWNSHIP...CONWAY...FREEDOM...BRIDGEWATER AND PATTERSON
  HEIGHTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

PLEASE REPORT FLOODING BY CALLING 412-262-1988...POSTING TO THE
NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER AT NWSPITTSBURGH. 
&&

LAT...LON 4076 8016 4061 8017 4061 8018 4060 8019
      4048 8035 4048 8051 4077 8050

$$

24
845 
WGUS71 KPBZ 150935
FFSPBZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
535 AM EDT MON JUN 15 2015

PAC007-150945-
/O.EXP.KPBZ.FF.W.0013.000000T0000Z-150615T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEAVER PA-
535 AM EDT MON JUN 15 2015

...THE FLASH FLOOD WARNING FOR BEAVER COUNTY WILL EXPIRE AT 545 AM
EDT...

FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A
THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD
CLOSURES.

LAT...LON 4076 8016 4061 8017 4061 8018 4060 8019
      4048 8035 4048 8051 4077 8050

$$

24

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 8:08 PM EDTSpecial Weather StatementPBZIndiana67 min
Jun 14, 8:11 PM EDTSevere Thunderstorm WarningPBZLawrence49 min
Jun 14, 8:18 PM EDTTornado WarningPBZArmstrong, Indiana, Westmoreland42 min
Jun 14, 8:38 PM EDTAreal Flood AdvisoryPBZAllegheny3 hr
Jun 14, 8:56 PM EDTAreal Flood AdvisoryPBZButler, Lawrence, Mercer3 hr
Jun 14, 8:59 PM EDTSevere Thunderstorm WarningPBZBeaver, Butler, Lawrence46 min
Jun 14, 9:08 PM EDTFlash Flood WarningPBZAllegheny9 hr
Jun 14, 9:10 PM EDTTornado WarningPBZAllegheny, Westmoreland35 min
Jun 14, 9:28 PM EDTSevere Thunderstorm WarningPBZAllegheny47 min
Jun 14, 9:33 PM EDTSevere Thunderstorm WarningPBZButler27 min
Jun 14, 9:42 PM EDTFlash Flood WarningPBZAllegheny3 hr
Jun 14, 9:42 PM EDTSevere Thunderstorm WarningPBZFayette, Westmoreland48 min
Jun 14, 9:56 PM EDTSevere Thunderstorm WarningPBZAllegheny, Beaver, Washington34 min
Jun 14, 10:01 PM EDTFlash Flood WarningPBZButler, Lawrence, Mercer6 hr
Jun 14, 10:05 PM EDTSpecial Weather StatementPBZWashington40 min
Jun 14, 10:16 PM EDTFlash Flood WarningPBZWestmoreland10 hr
Jun 14, 10:28 PM EDTSpecial Weather StatementPBZWestmoreland47 min
Jun 14, 10:31 PM EDTSpecial Weather StatementPBZFayette44 min
Jun 14, 10:32 PM EDTFlash Flood WarningPBZIndiana6 hr
Jun 14, 10:49 PM EDTSevere Thunderstorm WarningPBZFayette, Greene, Washington39 min
Jun 14, 11:14 PM EDTFlash Flood WarningPBZWestmoreland9 hr
Jun 15, 12:20 AM EDTAreal Flood AdvisoryPBZWashington3 hr
Jun 15, 12:33 AM EDTSevere Thunderstorm WarningPBZAllegheny, Beaver, Washington27 min
Jun 15, 12:46 AM EDTFlash Flood WarningPBZAllegheny5 hr
Jun 15, 1:11 AM EDTAreal Flood AdvisoryPBZArmstrong3 hr
Jun 15, 2:17 AM EDTSpecial Weather StatementPBZWestmoreland13 min
Jun 15, 6:22 AM EDTAreal Flood AdvisoryPBZAllegheny4 hr
Jun 15, 7:59 AM EDTAreal Flood AdvisoryPBZWestmoreland3 hr
Jun 15, 5:09 PM EDTFlash Flood WarningPBZButler, Lawrence, Mercer, Venango3 hr
Jun 15, 5:40 PM EDTSpecial Weather StatementPBZButler35 min
Jun 15, 7:33 PM EDTFlash Flood WarningPBZAllegheny, Armstrong, Butler, Westmoreland12 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2015Every flash flood warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.