Alert archive / Pennsylvania / Flash Flood Warnings in 2015
Flash Flood Warning 52, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 10, 2015, 9:09 PM EDT for Chester County, Delaware County, Philadelphia County, Pennsylvania; Gloucester County, New Jersey. It was in force for 6 hr. 5 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
- Sep 10, 2015, 9:09 PM EDT (01:09 UTC)
- Expired
- Sep 11, 2015, 3:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Gloucester County, NJ, Chester County, PA, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 01:09 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 10, 10:10 PM EDT | FLOOD | Gibbstown, NJ | ROADWAY FLOODING IN THE PAULSBORO AND GIBBSTOWN AREAS. |
| Sep 10, 10:25 PM EDT | FLOOD | Eddystone, PA | ROADWAY FLOODING ACROSS PORTIONS OF SOUTHEASTERN DELAWARE COUNTY. |
| Sep 10, 10:30 PM EDT | FLASH FLOOD | Greenwich Twp, NJ | NUMEROUS ROADS FLOODED AND CLOSED. VEHICLES STUCK IN HIGH WATER. |
| Sep 10, 10:30 PM EDT | FLASH FLOOD | Logan Twp, NJ | INTERSTATE 295 SOUTHBOUND BETWEEN EXITS 14 AND 11 FLOODED WITH LEFT AND CENTER LANES CLOSED. |
| Sep 11, 12:00 AM EDT | FLASH FLOOD | Woodbury, NJ | TWO CARS WERE TRAPPED IN FLOOD WATERS AT GLASSBORO RD AND EVERGREEN AVE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.2 hours before the alert went out and 211 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 713 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -60 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
134 WGUS51 KPHI 110109 FFWPHI NJC015-PAC029-045-101-110400- /O.NEW.KPHI.FF.W.0052.150911T0109Z-150911T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 909 PM EDT THU SEP 10 2015 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY... SOUTHEASTERN CHESTER COUNTY IN SOUTHEASTERN PENNSYLVANIA... SOUTHEASTERN DELAWARE COUNTY IN SOUTHEASTERN PENNSYLVANIA... SOUTHWESTERN PHILADELPHIA COUNTY IN SOUTHEASTERN PENNSYLVANIA... * UNTIL MIDNIGHT EDT * AT 906 PM EDT...DOPPLER RADAR INDICATED A SLOW MOVING CLUSTER OF SHOWERS PRODUCING VERY HEAVY RAIN ACROSS MUCH OF THE WARNED AREA. RAINFALL RATES ARE UP TO TWO INCHES PER HOUR. THE HIGH RAINFALL RATES WILL ENHANCE RUNOFF AND LEAD TO FLASH FLOODING, ESPECIALLY IN URBAN AREAS. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... PHILADELPHIA...CHESTER...DEPTFORD...WEST DEPTFORD...WOODBURY... FOLCROFT...PAULSBORO...WESTVILLE...WOODBURY HEIGHTS...NATIONAL PARK...SOUTH PHILADELPHIA...GIBBSTOWN...PHILADELPHIA INTERNATIONAL AIRPORT...PHILADELPHIA INTERNATIONAL AIRPORT...CHESTER TOWNSHIP... DARBY TOWNSHIP...BECKETT...NETHER PROVIDENCE TOWNSHIP...BROOKHAVEN AND GLENOLDEN. 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...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3993 7517 3981 7508 3975 7539 3987 7543 $$ GORSE
6 follow-up statements
240 WGUS71 KPHI 110117 FFSPHI FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 917 PM EDT THU SEP 10 2015 PAC029-110124- /O.CAN.KPHI.FF.W.0052.000000T0000Z-150911T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CHESTER PA- 917 PM EDT THU SEP 10 2015 ...THE FLASH FLOOD WARNING FOR SOUTHEASTERN CHESTER COUNTY IS CANCELLED... CHESTER COUNTY WAS INCORRECTLY INCLUDED VIA THE SOFTWARE IN THE INITIAL WARNING. THUS, THIS ISSUANCE IS TO REMOVE IT. LAT...LON 3993 7517 3981 7508 3975 7538 3987 7543 $$ NJC015-PAC045-101-110400- /O.CON.KPHI.FF.W.0052.000000T0000Z-150911T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GLOUCESTER NJ-DELAWARE PA-PHILADELPHIA PA- 917 PM EDT THU SEP 10 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT FOR NORTHWESTERN GLOUCESTER...SOUTHEASTERN DELAWARE AND SOUTHWESTERN PHILADELPHIA COUNTIES... AT 914 PM EDT...DOPPLER RADAR INDICATED A SLOW MOVING CLUSTER OF SHOWERS PRODUCING VERY HEAVY RAIN ACROSS MUCH OF THE WARNED AREA. RAINFALL RATES ARE UP TO TWO INCHES PER HOUR. THE HIGH RAINFALL RATES WILL ENHANCE RUNOFF AND LEAD TO FLASH FLOODING, ESPECIALLY IN URBAN AREAS. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... PHILADELPHIA...CHESTER...DEPTFORD...WEST DEPTFORD...WOODBURY... FOLCROFT...PAULSBORO...WESTVILLE...WOODBURY HEIGHTS...NATIONAL PARK...SOUTH PHILADELPHIA...GIBBSTOWN...PHILADELPHIA INTERNATIONAL AIRPORT...PHILADELPHIA INTERNATIONAL AIRPORT...CHESTER TOWNSHIP...DARBY TOWNSHIP...BECKETT...NETHER PROVIDENCE TOWNSHIP...BROOKHAVEN AND GLENOLDEN. 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...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3993 7517 3981 7508 3975 7538 3987 7543 $$ GORSE
434 WGUS71 KPHI 110217 FFSPHI FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1017 PM EDT THU SEP 10 2015 NJC015-PAC045-101-110400- /O.CON.KPHI.FF.W.0052.000000T0000Z-150911T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GLOUCESTER NJ-DELAWARE PA-PHILADELPHIA PA- 1017 PM EDT THU SEP 10 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT FOR NORTHWESTERN GLOUCESTER...SOUTHEASTERN DELAWARE AND SOUTHWESTERN PHILADELPHIA COUNTIES... AT 1010 PM EDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED THAT VERY HEAVY RAIN CONTINUES TO FALL OVER THE SAME LOCATIONS WITHIN MUCH OF THE WARNED AREA. SOME RAIN GAUGE REPORTS INDICATE THAT UP TO 3 INCHES HAS FALLEN WITHIN 90 MINUTES. THIS AMOUNT OF RAIN IN A SHORT PERIOD OF TIME WILL LEAD TO FLASH FLOODING, ESPECIALLY IN URBAN AREAS. AS OF 1012 PM, THE HEAVIEST RAIN WAS LOCATED IN WESTERN GLOUCESTER COUNTY. AS OF 1000 PM, PHILADELPHIA INTERNATIONAL AIRPORT RECORDED NEARLY 2 INCHES OF RAIN. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... PHILADELPHIA...CHESTER...DEPTFORD...WEST DEPTFORD...WOODBURY... FOLCROFT...PAULSBORO...WESTVILLE...WOODBURY HEIGHTS...NATIONAL PARK...SOUTH PHILADELPHIA...GIBBSTOWN...PHILADELPHIA INTERNATIONAL AIRPORT...PHILADELPHIA INTERNATIONAL ARPT...CHESTER TOWNSHIP...DARBY TOWNSHIP...BECKETT...NETHER PROVIDENCE TOWNSHIP...BROOKHAVEN AND GLENOLDEN. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3993 7517 3981 7508 3975 7538 3987 7543 $$ GORSE
450 WGUS71 KPHI 110254 FFSPHI FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1054 PM EDT THU SEP 10 2015 NJC015-PAC045-101-110400- /O.CON.KPHI.FF.W.0052.000000T0000Z-150911T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GLOUCESTER NJ-DELAWARE PA-PHILADELPHIA PA- 1054 PM EDT THU SEP 10 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT FOR NORTHWESTERN GLOUCESTER...SOUTHEASTERN DELAWARE AND SOUTHWESTERN PHILADELPHIA COUNTIES... AT 1045 PM EDT...LOCAL LAW ENFORCEMENT REPORTED NUMEROUS ROADS FLOODED AND CLOSED IN PORTIONS OF NORTHWESTERN GLOUCESTER COUNTY. IN ADDITION, INTERSTATE 295 SOUTHBOUND IN LOGAN TOWNSHIP IS FLOODED WITH THE LEFT AND CENTER LANES CLOSED. DOPPLER RADAR INDICATES VERY HEAVY RAIN CONTINUES ESPECIALLY OVER WESTERN GLOUCESTER COUNTY WITH RAINFALL RATES OF AROUND 2 INCHES PER HOUR. DO NOT DRIVE THROUGH FLOODED ROADWAYS. FLOODING IS DIFFICULT TO SEE AT NIGHT. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... PHILADELPHIA...CHESTER...DEPTFORD...WEST DEPTFORD...WOODBURY... FOLCROFT...PAULSBORO...WESTVILLE...WOODBURY HEIGHTS...NATIONAL PARK...SOUTH PHILADELPHIA...GIBBSTOWN...PHILADELPHIA INTERNATIONAL AIRPORT...PHILADELPHIA INTERNATIONAL ARPT...CHESTER TOWNSHIP...DARBY TOWNSHIP...BECKETT...NETHER PROVIDENCE TOWNSHIP...BROOKHAVEN AND GLENOLDEN. 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...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3993 7517 3981 7508 3975 7538 3987 7543 $$ GORSE
652 WGUS51 KPHI 110329 FFWPHI NJC015-PAC045-101-110700- /O.EXT.KPHI.FF.W.0052.000000T0000Z-150911T0700Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1129 PM EDT THU SEP 10 2015 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE * FLASH FLOOD WARNING FOR... NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY... SOUTHEASTERN DELAWARE COUNTY IN SOUTHEASTERN PENNSYLVANIA... SOUTHWESTERN PHILADELPHIA COUNTY IN SOUTHEASTERN PENNSYLVANIA... * UNTIL 300 AM EDT * AT 1125 PM EDT...LOCAL LAW ENFORCEMENT REPORTED HEAVY RAIN ACROSS THE WARNED AREA WITH NUMEROUS REPORTS OF ROADWAY CLOSURES DUE TO FLOODING. FOUR TO SIX INCHES OF RAIN HAVE FALLEN IN PORTIONS OF THE WARNED AREA. DOPPLER RADAR INDICATES VERY HEAVY RAIN CONTINUES ESPECIALLY OVER WESTERN GLOUCESTER COUNTY WITH RAINFALL RATES OF AROUND 2 INCHES PER HOUR. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... PHILADELPHIA...CHESTER...DEPTFORD...WEST DEPTFORD...WOODBURY... FOLCROFT...PAULSBORO...WESTVILLE...WOODBURY HEIGHTS...NATIONAL PARK...SOUTH PHILADELPHIA...GIBBSTOWN...PHILADELPHIA INTERNATIONAL AIRPORT...PHILADELPHIA INTERNATIONAL ARPT...CHESTER TOWNSHIP... DARBY TOWNSHIP...BECKETT...NETHER PROVIDENCE TOWNSHIP...BROOKHAVEN AND GLENOLDEN. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3993 7517 3981 7508 3975 7538 3987 7543 $$ MEOLA
793
WGUS71 KPHI 110449
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1249 AM EDT FRI SEP 11 2015
PAC045-101-110454-
/O.CAN.KPHI.FF.W.0052.000000T0000Z-150911T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DELAWARE PA-PHILADELPHIA PA-
1249 AM EDT FRI SEP 11 2015
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN DELAWARE AND SOUTHWESTERN
PHILADELPHIA COUNTIES IS CANCELLED...
THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT. PLEASE CONTINUE TO HEED ALL ROAD CLOSURES.
LAT...LON 3981 7539 3985 7533 3985 7525 3988 7519
3989 7514 3981 7508 3975 7538 3981 7541
$$
NJC015-110700-
/O.CON.KPHI.FF.W.0052.000000T0000Z-150911T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GLOUCESTER NJ-
1249 AM EDT FRI SEP 11 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM EDT FOR
NORTHWESTERN GLOUCESTER COUNTY...
AT 1244 AM EDT...LOCAL LAW ENFORCEMENT REPORTED FLOODING DUE TO
HEAVY RAIN IN LOGAN TOWNSHIP. PORTIONS OF INTERSTATE 295 WERE CLOSED
DUE TO WATER ON THE ROADWAY. RAINFALL AMOUNTS OF FOUR TO SIX INCHES
HAVE BEEN REPORTED IN GLOUCESTER COUNTY. THE HEAVY RAIN HAS MOVED
OUT OF THE AREA BUT IT WILL TAKE MORE TIME FOR THE FLOOD WATERS TO
RECEDE.
HEED ALL ROAD CLOSURE SIGNS AND DO NOT DRIVE THROUGH FLOODED
ROADWAYS. FLOODING IS DIFFICULT TO SEE AT NIGHT.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DEPTFORD...WEST DEPTFORD...WOODBURY...PAULSBORO...WESTVILLE...
WOODBURY HEIGHTS...NATIONAL PARK...GIBBSTOWN...BECKETT...EDDYSTONE...
MARCUS HOOK...WENONAH AND OAK VALLEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3981 7539 3985 7533 3985 7525 3988 7519
3989 7514 3981 7508 3975 7538 3981 7541
$$
MEOLA529
WGUS71 KPHI 110700
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
300 AM EDT FRI SEP 11 2015
NJC015-110709-
/O.EXP.KPHI.FF.W.0052.000000T0000Z-150911T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GLOUCESTER NJ-
300 AM EDT FRI SEP 11 2015
...THE FLASH FLOOD WARNING FOR NORTHWESTERN GLOUCESTER COUNTY WILL
EXPIRE AT 300 AM EDT...
FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A
THREAT TO LIFE OR PROPERTY. THE FLASH FLOOD WARNING HAS BEEN
REPLACED BY AN AREAL FLOOD WARNING. PLEASE CONTINUE TO HEED ANY ROAD
CLOSURES.
LAT...LON 3981 7539 3985 7533 3985 7525 3988 7519
3989 7514 3981 7508 3975 7538 3981 7541
$$
MEOLAThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 8:15 PM EDT | Areal Flood Advisory | PHI | Delaware, Philadelphia | 3 hr |
| Sep 10, 11:21 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester | 4 hr |
| Sep 11, 2:59 AM EDT | Areal Flood Warning | PHI | Gloucester | 4 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2015Flash Flood Warnings in New Jersey, 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.