Alert archive / Pennsylvania / Flash Flood Warnings in 2015

Flash Flood Warning 21, NWS Pittsburgh, PA

June 15, 20154 counties in Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 15, 2015, 7:33 PM EDT for 4 counties in Pennsylvania. It was in force for 12 hr. 17 reports 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 15, 2015, 7:33 PM EDT (23:33 UTC)
Expired
Jun 16, 2015, 7:54 AM EDT
In force
12 hr
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Flood severity
None

Counties Allegheny County, PA, Armstrong County, PA, Butler County, PA, Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 53 km from the middle of the area, began a volume at 23:33 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, 7:49 PM EDTFLASH FLOODKarns, PANEIGHBORHOOD OF ELBROOK DR FLOODED
Jun 15, 7:51 PM EDTFLASH FLOODWeinel Crossroads, PASOUTH LEECHBURG HILL RD AND RT 365 UNDER 2 FEET OF WATER WITH VEHICLE IMMOBILIZED
Jun 15, 8:06 PM EDTFLASH FLOOD1 N Vandergrift, PAAIRPORT RD IS FLOODED IN VANDERGRIFT
Jun 15, 8:45 PM EDTFLASH FLOOD1 N Tarentum, PAROADWAY FLOODING OVER THE SIDEWALKS IN FAWN TOWNSHIP
Jun 15, 9:07 PM EDTFLASH FLOOD1 S Leechburg, PAMULTIPLE REPORTS OF ROADWAY AND BASEMENT FLOODING IN ALLEGHENY TOWNSHIP
Jun 15, 9:07 PM EDTFLASH FLOOD2 S Leechburg, PAMUDSLIDE ONTO PINE RUN RD
Jun 15, 9:07 PM EDTFLASH FLOODOklahoma, PAFLOODING ON HANCOCK ST
Jun 15, 9:19 PM EDTFLASH FLOOD1 N Natrona, PAMULTIPLE REPORTS OF FEET OF WATER ALONG CANAL ST IN HARRISON TOWNSHIP
Jun 15, 9:51 PM EDTFLASH FLOODKiskimere, PAMULTIPLE REPORTS OF LANDSLIDES...STREETS WASHED OUT...ROAD FLOODING...AND BASEMENT FLOODING IN KISKI TWP...N APPOLLO...APPOLLO...AND LEECHBURG
Jun 15, 11:00 PM EDTFLASH FLOOD1 W Broadview, PALANDSLIDE ONTO DAYS RUN RD IN FRAZER TWP
Jun 15, 11:00 PM EDTFLASH FLOODBrackenridge, PAWATER FLOWING INTO RESIDENCES
Jun 15, 11:07 PM EDTFLASH FLOODCulmerville, PASAXONBURG RD FLOODED NEAR WEST DEER NUMBER2 FIRE COMPANY
Jun 15, 11:14 PM EDTFLASH FLOOD1 W Compton, PABRIDGE WASHED OUT AND WATER RUNNING INTO AREA HOMES ON METZ RD
Jun 15, 11:14 PM EDTHEAVY RAIN 2.28Lower Burrell, PARAINFALL TONIGHT AFTER 2.20 LAST NIGHT
Jun 15, 11:17 PM EDTFLASH FLOODHarrison Township, PAWATER FLOWING INTO HOMES
Jun 15, 11:35 PM EDTFLASH FLOOD2 Ssw Apollo, PAPINE RUN RD...MARKLE RD...SPRING HOLLOW RD...BOWMAN RD...ALL FLOODED IN PORTIONS OF WASHINGTON TWP
Jun 16, 3:24 AM EDTFLASH FLOOD1 Wnw Oklahoma, PASR 356 IS CLOSED FROM LABELL VUE DR TO ORR AVE IN ALLEGHENY TWP

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 12:00Z, 11.6 hours before the alert went out and 48 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 2015-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 95 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2015-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
95 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
638 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
156 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.

283 
WGUS51 KPBZ 152333
FFWPBZ
PAC003-005-019-129-160230-
/O.NEW.KPBZ.FF.W.0021.150615T2333Z-150616T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN ARMSTRONG COUNTY IN WEST CENTRAL PENNSYLVANIA...
  SOUTHEASTERN BUTLER COUNTY IN WEST CENTRAL PENNSYLVANIA...
  NORTHEASTERN ALLEGHENY COUNTY IN SOUTHWESTERN PENNSYLVANIA...
  NORTHWESTERN WESTMORELAND COUNTY IN SOUTHWESTERN PENNSYLVANIA...

* UNTIL 1030 PM EDT
    
* AT 732 PM EDT...DOPPLER RADAR INDICATED A GROUP OF THUNDERSTORMS 
  PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS 
  EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  VANDERGRIFT...APOLLO...NEW KENSINGTON...LOWER BURRELL...HARRISON
  TOWNSHIP...ARNOLD...TARENTUM...NATRONA HEIGHTS...BRACKENRIDGE...
  LEECHBURG...SARVER...FREEPORT...SAXONBURG...NORTH APOLLO...WEST
  LEECHBURG...CURTISVILLE...AVONMORE...ORCHARD HILLS...OKLAHOMA AND
  EAST VANDERGRIFT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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

LAT...LON 4054 7944 4052 7946 4049 7946 4046 7955
      4067 7992 4077 7992 4082 7986 4064 7935

$$

TAX
4 follow-up statements
992 
WGUS71 KPBZ 160104
FFSPBZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
904 PM EDT MON JUN 15 2015

PAC003-005-019-129-160230-
/O.CON.KPBZ.FF.W.0021.000000T0000Z-150616T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ARMSTRONG PA-BUTLER PA-ALLEGHENY PA-WESTMORELAND PA-
904 PM EDT MON JUN 15 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT FOR
SOUTHWESTERN ARMSTRONG...SOUTHEASTERN BUTLER...NORTHEASTERN ALLEGHENY
AND NORTHWESTERN WESTMORELAND COUNTIES...

AT 858 PM EDT...DOPPLER RADAR INDICATED ADDITIONAL THUNDERSTORMS 
MOVING TOWARDS THE WARNING AREA. THESE WILL AGAIN PRODUCING HEAVY 
RAIN ACROSS THE WARNED AREA. 
 
FLASH FLOODING HAS BEEN REPORTED BY EMERGENCY MANAGEMENT IN THE 
TOWNS OF LOWER BURRELL...HARRISON TOWNSHIP...AND VANDERGRIFT.

SOME ADDITIONAL LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
VANDERGRIFT...APOLLO...NEW KENSINGTON...ARNOLD...TARENTUM...NATRONA 
HEIGHTS...BRACKENRIDGE...LEECHBURG...SARVER...FREEPORT...SAXONBURG... 
NORTH APOLLO...WEST LEECHBURG...CURTISVILLE...AVONMORE...ORCHARD 
HILLS...OKLAHOMA AND EAST VANDERGRIFT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 4054 7944 4052 7946 4049 7946 4046 7955
      4067 7992 4077 7992 4082 7986 4064 7935

$$

TAX
215 
WGUS51 KPBZ 160210
FFWPBZ
PAC003-005-019-129-160730-
/O.EXT.KPBZ.FF.W.0021.000000T0000Z-150616T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
1010 PM EDT MON JUN 15 2015

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN ARMSTRONG COUNTY IN WEST CENTRAL PENNSYLVANIA...
  SOUTHEASTERN BUTLER COUNTY IN WEST CENTRAL PENNSYLVANIA...
  NORTHEASTERN ALLEGHENY COUNTY IN SOUTHWESTERN PENNSYLVANIA...
  NORTHWESTERN WESTMORELAND COUNTY IN SOUTHWESTERN PENNSYLVANIA...

* UNTIL 330 AM EDT
    
* AT 1009 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A THUNDERSTORM 
  PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. RAINFALL AMOUNTS OF 
  THREE TO FIVE INCHES OF RAIN HAVE FALLEN SINCE LAST EVENING. FLASH 
  FLOODING IS ALREADY OCCURRING. ONE TO TWO INCHES OF ADDITIONAL 
  RAINFALL ARE EXPECTED IN THE NEXT HOUR OR TWO.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  VANDERGRIFT...APOLLO...NEW KENSINGTON...LOWER BURRELL...HARRISON
  TOWNSHIP...ARNOLD...TARENTUM...NATRONA HEIGHTS...BRACKENRIDGE...
  LEECHBURG...SARVER...FREEPORT...SAXONBURG...NORTH APOLLO...WEST
  LEECHBURG...CURTISVILLE...AVONMORE...ORCHARD HILLS...OKLAHOMA AND
  EAST VANDERGRIFT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 4054 7944 4052 7946 4049 7946 4046 7955
      4067 7992 4077 7992 4082 7986 4064 7935

$$

FRIES
780 
WGUS51 KPBZ 160719
FFWPBZ
PAC003-005-019-129-161230-
/O.EXT.KPBZ.FF.W.0021.000000T0000Z-150616T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
318 AM EDT TUE JUN 16 2015

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN ARMSTRONG COUNTY IN WEST CENTRAL PENNSYLVANIA...
  SOUTHEASTERN BUTLER COUNTY IN WEST CENTRAL PENNSYLVANIA...
  NORTHEASTERN ALLEGHENY COUNTY IN SOUTHWESTERN PENNSYLVANIA...
  NORTHWESTERN WESTMORELAND COUNTY IN SOUTHWESTERN PENNSYLVANIA...

* UNTIL 830 AM EDT

* AT 318 AM EDT...LOCAL LAW ENFORCEMENT REPORTED NUMEROUS ROAD 
  CLOSURES AND OTHER FLOOD RELATED PROBLEMS ACROSS THE WARNED AREA. 
  
  ADDITIONAL RAINFALL AMOUNTS OF 1 TO 1.5 INCHES IS POSSIBLE IN   
  THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 4054 7944 4052 7946 4049 7946 4046 7955
      4067 7992 4077 7992 4082 7986 4064 7935

$$
885 
WGUS71 KPBZ 161154
FFSPBZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
754 AM EDT TUE JUN 16 2015

PAC003-005-019-129-161202-
/O.CAN.KPBZ.FF.W.0021.000000T0000Z-150616T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ARMSTRONG PA-BUTLER PA-ALLEGHENY PA-WESTMORELAND PA-
754 AM EDT TUE JUN 16 2015

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN ARMSTRONG...SOUTHEASTERN
BUTLER...NORTHEASTERN ALLEGHENY AND NORTHWESTERN WESTMORELAND
COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLASH FLOODING IS NO LONGER EXPECTED 
TO POSE A THREAT.

LAT...LON 4054 7944 4052 7946 4049 7946 4046 7955
      4067 7992 4077 7992 4082 7986 4064 7935

$$

34

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, 9:37 PM EDTFlash Flood WarningPBZBeaver8 hr
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

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.