Alert archive / Pennsylvania / Flash Flood Warnings in 2015
Flash Flood Warning 32, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 9, 2015, 8:51 PM EDT for Burlington County, Camden County, New Jersey; Bucks County, Montgomery County, Philadelphia County, Pennsylvania. It was in force for 4 hr. 2 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
- Jul 9, 2015, 8:51 PM EDT (00:51 UTC)
- Expired
- Jul 10, 2015, 12:45 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burlington County, NJ, Camden County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 38 km from the middle of the area, began a volume at 00:53 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 |
|---|---|---|---|
| Jul 9, 8:52 PM EDT | FLASH FLOOD | Philadelphia, PA | FRANKFORD CREEK OVERFLOWED ITS BANKS DUE TO A FLASH FLOOD. |
| Jul 9, 9:00 PM EDT | HEAVY RAIN 2.25 | Burlington, NJ | 1-HR TOTAL |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.9 hours before the alert went out and 186 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
- 676 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
654
WGUS51 KPHI 100051
FFWPHI
NJC005-007-PAC017-091-101-100445-
/O.NEW.KPHI.FF.W.0032.150710T0051Z-150710T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
851 PM EDT THU JUL 9 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHWESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
NORTHERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
SOUTHEASTERN BUCKS COUNTY IN SOUTHEASTERN PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEASTERN PENNSYLVANIA...
SOUTHEASTERN MONTGOMERY COUNTY IN SOUTHEASTERN PENNSYLVANIA...
* UNTIL 1245 AM EDT
* AT 851 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PHILADELPHIA...CAMDEN...GLOUCESTER CITY...BENSALEM...MOUNT
LAUREL...WILLINGBORO...LUMBERTON...FLORENCE...BURLINGTON...
BRISTOL...MOUNT HOLLY...RIVERSIDE...CONSHOHOCKEN...PALMYRA...
JENKINTOWN...NARBERTH...BORDENTOWN...BEVERLY...ROCKLEDGE AND
TULLYTOWN.
ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
&&
LAT...LON 3990 7521 4010 7533 4018 7474 4015 7472
4017 7470 4017 7471 4019 7470 4014 7462
4013 7458 3993 7447
$$
SFJ2 follow-up statements
099
WGUS71 KPHI 100138
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
938 PM EDT THU JUL 9 2015
NJC005-007-PAC017-091-101-100445-
/O.CON.KPHI.FF.W.0032.000000T0000Z-150710T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAMDEN NJ-BURLINGTON NJ-BUCKS PA-PHILADELPHIA PA-MONTGOMERY PA-
938 PM EDT THU JUL 9 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT FOR
NORTHWESTERN CAMDEN...NORTHERN BURLINGTON...SOUTHEASTERN BUCKS...
PHILADELPHIA AND SOUTHEASTERN MONTGOMERY COUNTIES...
AT 937 PM EDT...DOPPLER RADAR INDICATED HEAVY RAIN HAD MOSTLY LEFT
THE WARNED AREA. HOWEVER...RUNOFF WILL BE SLOW TO RECEDE. UP TO TWO
INCHES OF RAIN HAVE ALREADY FALLEN.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PHILADELPHIA...CAMDEN...GLOUCESTER CITY...BENSALEM...MOUNT LAUREL...
WILLINGBORO...LUMBERTON...FLORENCE...BURLINGTON...BRISTOL...MOUNT
HOLLY...RIVERSIDE...CONSHOHOCKEN...PALMYRA...JENKINTOWN...NARBERTH...
BORDENTOWN...BEVERLY...ROCKLEDGE AND TULLYTOWN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 3990 7521 4010 7533 4018 7474 4015 7472
4017 7470 4017 7471 4019 7470 4014 7462
4013 7458 3993 7447
$$
SFJ019
WGUS71 KPHI 100259
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1059 PM EDT THU JUL 9 2015
NJC005-007-PAC017-091-101-100307-
/O.CAN.KPHI.FF.W.0032.000000T0000Z-150710T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAMDEN NJ-BURLINGTON NJ-BUCKS PA-PHILADELPHIA PA-MONTGOMERY PA-
1059 PM EDT THU JUL 9 2015
...THE FLASH FLOOD WARNING FOR NORTHWESTERN CAMDEN...NORTHERN
BURLINGTON...SOUTHEASTERN BUCKS...PHILADELPHIA AND SOUTHEASTERN
MONTGOMERY COUNTIES IS CANCELLED...
THE HEAVY RAINFALL HAS ENDED. ANY HIGH WATER ON AREA CREEKS AND
STREAMS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A THREAT
TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES.
LAT...LON 3990 7521 4010 7533 4018 7474 4015 7472
4017 7470 4017 7471 4019 7470 4014 7462
4013 7458 3993 7447
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:17 PM EDT | Special Marine Warning | PHI | 58 min | |
| Jul 9, 8:19 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more | 71 min |
| Jul 9, 8:28 PM EDT | Special Weather Statement | PHI | Monmouth | 47 min |
| Jul 9, 8:45 PM EDT | Special Marine Warning | PHI | 60 min | |
| Jul 9, 8:53 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 37 min |
| Jul 9, 8:55 PM EDT | Tornado Warning | PHI | Burlington | 20 min |
| Jul 9, 9:19 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May | 41 min |
| Jul 9, 9:28 PM EDT | Special Marine Warning | PHI | 62 min | |
| Jul 9, 10:00 PM EDT | Special Marine Warning | PHI | 60 min |
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.