Alert archive / New Jersey / Flash Flood Warnings in 2018
Flash Flood Warning 103, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 25, 2018, 5:35 PM EDT for Bucks County, Delaware County, Philadelphia County, Pennsylvania; 4 counties in New Jersey. It was in force for 4 hr. 4 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 25, 2018, 5:35 PM EDT (21:35 UTC)
- Expired
- Sep 25, 2018, 9:30 PM 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, Gloucester County, NJ, Mercer County, NJ, Bucks County, PA, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 39 km from the middle of the area, began a volume at 21:37 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 25, 6:00 PM EDT | FLASH FLOOD | 1 Nne Woodlynne, NJ | DISABLED VEHICLE AND FLOODING ALONG US 130 SOUTHBOUND NEAR NJ STATE ROUTE 70. RIGHT LANE CLOSED. |
| Sep 25, 6:33 PM EDT | FLOOD | 1 N Burlington Twp, NJ | PHOTOS OF STREET FLOODING IN THE PINEWALD SECTION OF BURLINGTON TOWNSHIP. |
| Sep 25, 6:43 PM EDT | FLOOD | Delran, NJ | SEVERAL ROADS FLOODED AND SOME NEARLY IMPASSABLE VIA FACEBOOK POSTS FROM THOSE IN THE NEIGHBORHOOD. TIME ESTIMATED FROM RADAR. |
| Sep 25, 7:57 PM EDT | HEAVY RAIN 1.91 | Mount Holly Wfo, NJ | 1.91 INCHES SINCE AROUND 5 PM. |
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 12:00Z, 9.6 hours before the alert went out and 194 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
- 457 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 413 m²/s²
- 0-3 km storm-relative helicity
- 577 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
645
WGUS51 KPHI 252135
FFWPHI
NJC005-007-015-021-PAC017-045-101-260130-
/O.NEW.KPHI.FF.W.0103.180925T2135Z-180926T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
535 PM EDT TUE SEP 25 2018
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Northwestern Camden County in southern New Jersey...
South central Mercer County in central New Jersey...
North central Gloucester County in southern New Jersey...
Northern Burlington County in southern New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
Central Philadelphia County in southeastern Pennsylvania...
Southeastern Delaware County in southeastern Pennsylvania...
* Until 930 PM EDT.
* At 534 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is in the areas
of heaviest rain.
* Some locations that could experience flooding include...
Philadelphia, Camden, Gloucester City, Cherry Hill, Evesham, Mount
Laurel, Willingboro, Deptford, Voorhees, Medford, West Deptford,
Glassboro, Lindenwold, Lumberton, Florence, Bellmawr, Woodbury,
Burlington, Bristol and Mount Holly.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 4020 7464 4004 7454 3966 7513 3982 7531
4010 7491
$$
Fitzsimmons2 follow-up statements
727
WGUS71 KPHI 260024
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
824 PM EDT TUE SEP 25 2018
NJC007-015-PAC045-101-260029-
/O.CAN.KPHI.FF.W.0103.000000T0000Z-180926T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Camden NJ-Gloucester NJ-Philadelphia PA-Delaware PA-
824 PM EDT TUE SEP 25 2018
...THE FLASH FLOOD WARNING FOR NORTHWESTERN CAMDEN...NORTH CENTRAL
GLOUCESTER...CENTRAL PHILADELPHIA AND SOUTHEASTERN DELAWARE COUNTIES
IS CANCELLED...
The heavy rain has moved out and flash flooding is no longer
expected. However there may continue to be ponding of water in low
lying areas. Please continue to heed any remaining road closures.
LAT...LON 4020 7464 4004 7454 3987 7480 4008 7489
4014 7478
$$
NJC005-021-PAC017-260130-
/O.CON.KPHI.FF.W.0103.000000T0000Z-180926T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mercer NJ-Burlington NJ-Bucks PA-
824 PM EDT TUE SEP 25 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR
SOUTH CENTRAL MERCER...NORTHEASTERN BURLINGTON AND SOUTHEASTERN BUCKS
COUNTIES...
At 819 PM EDT, the heaviest rain has moved out however further rises
on area creeks and streams and associated flooding can be expected
as the water makes its way through the river system.
Some locations that could experience flooding include...
Medford, Lumberton, Florence, Burlington, Bristol, Mount Holly,
Bordentown, Pemberton, Wrightstown, Crosswicks, Florence-Roebling,
Jobstown, Columbus, Jacksonville, Georgetown, Fieldsboro, Nws Office,
Pemberton Heights, Yardville-Groveville and Fort Dix.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4020 7464 4004 7454 3987 7480 4008 7489
4014 7478
$$
Fitzsimmons181
WGUS71 KPHI 260121
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
921 PM EDT TUE SEP 25 2018
NJC005-021-PAC017-260130-
/O.EXP.KPHI.FF.W.0103.000000T0000Z-180926T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mercer NJ-Burlington NJ-Bucks PA-
921 PM EDT TUE SEP 25 2018
...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL MERCER...NORTHEASTERN
BURLINGTON AND SOUTHEASTERN BUCKS COUNTIES WILL EXPIRE AT 930 PM
EDT...
The heavy rain has ended and flash flooding is no longer expected to
pose a threat. Please continue to heed any remaining road closures.
LAT...LON 4020 7464 4004 7454 3987 7480 4008 7489
4014 7478
$$
FitzsimmonsThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 2:59 PM EDT | Areal Flood Advisory | PHI | Bucks, Chester, Delaware, Lehigh, Montgomery | 4 hr |
| Sep 25, 4:03 PM EDT | Areal Flood Advisory | PHI | Bucks, Delaware, Montgomery, Philadelphia | 3 hr |
| Sep 25, 4:19 PM EDT | Flash Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 4 hr |
| Sep 25, 5:14 PM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| Sep 25, 12:07 PM EDT | Special Weather Statement | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 23 min |
| Sep 25, 12:33 PM EDT | Rip Current Statement | PHI | Atlantic, Cape May, Monmouth, Ocean | 8 hr |
| Sep 25, 12:47 PM EDT | Special Weather Statement | PHI | Morris, Somerset, Sussex | 43 min |
| Sep 25, 2:30 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset | 3 hr |
| Sep 25, 6:03 PM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Monmouth | 3 hr |
| Sep 25, 6:39 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean | 3 hr |
| Sep 25, 6:47 PM EDT | Tornado Warning | PHI | Burlington | 32 min |
| Sep 25, 7:21 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 17 min |
Nearby
Flash Flood Warnings in New Jersey, 2018Flash Flood Warnings in Pennsylvania, 2018Every flash flood warning in 2018
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.