Alert archive / New Jersey / Flash Flood Warnings in 2023
Flash Flood Warning 85, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 10, 2023, 9:37 PM EDT for Burlington County, Camden County, New Jersey. It was in force for 4 hr. 3 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, 2023, 9:37 PM EDT (01:37 UTC)
- Expired
- Sep 11, 2023, 1:33 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
The radar
The Philadelphia radar (KDIX), 49 km from the middle of the area, began a volume at 01:39 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, 11:14 PM EDT | FLASH FLOOD | 1 Nw Ramblewood, NJ | New Jersey Turnpike flooded just north of the Route 73 interchange in Mount Laurel Township. One right lane and shoulder closed. |
| Sep 11, 1:05 AM EDT | RAIN 2.02 | Cherry Hill Njwxnet, NJ | Cherry Hill NJWxNet station. |
| Sep 11, 1:10 AM EDT | RAIN 1.98 | Moorestown, NJ | Moorestown NJWxNet station. |
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, 1.6 hours before the alert went out and 208 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
- 357 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 870 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
943
WGUS51 KPHI 110137
FFWPHI
NJC005-007-110545-
/O.NEW.KPHI.FF.W.0085.230911T0137Z-230911T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
937 PM EDT Sun Sep 10 2023
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
West Central Burlington County in southern New Jersey...
Northwestern Camden County in southern New Jersey...
* Until 145 AM EDT.
* At 937 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1.5 inches of
rain have fallen. Additional rainfall amounts up to 0.5 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
* Some locations that may experience flash flooding include...
Cherry Hill, Mount Laurel, Voorhees, Lindenwold, Bellmawr,
Magnolia, Greentree, Barclay-Kingston, Ramblewood, Springdale,
Erlton-Ellisburg, and Marlton.
This includes the following highways...
New Jersey Turnpike near exit 4.
Interstate 295 in New Jersey between mile markers 29 and 41.
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 3996 7502 3997 7500 3999 7490 3993 7487
3986 7492 3983 7501 3986 7507 3991 7507
FLASH FLOOD...RADAR INDICATED
$$
MLB1 follow-up statement
525
WGUS71 KPHI 110533
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
133 AM EDT Mon Sep 11 2023
NJC005-007-110543-
/O.CAN.KPHI.FF.W.0085.000000T0000Z-230911T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-
133 AM EDT Mon Sep 11 2023
...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL BURLINGTON AND
NORTHWESTERN CAMDEN COUNTIES...
Flood waters are receding. The heavy rain has ended. Flooding is no
longer expected to pose a threat.
LAT...LON 3996 7502 3997 7500 3999 7490 3993 7487
3986 7492 3983 7501 3986 7507 3991 7507
$$
IovinoThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 9:03 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 3 hr |
| Sep 10, 10:00 PM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 3 hr |
| Sep 10, 10:31 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester, Salem | 3 hr |
| Sep 10, 10:47 PM EDT | Areal Flood Advisory | PHI | Monmouth | 2 hr |
| Sep 11, 12:03 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Cumberland, Gloucester, Salem | 3 hr |
| Sep 11, 3:04 PM EDT | Special Marine Warning | PHI | 41 min | |
| Sep 11, 4:26 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington | 82 min |
| Sep 11, 4:30 PM EDT | Special Weather Statement | PHI | Essex | 30 min |
| Sep 11, 4:43 PM EDT | Areal Flood Advisory | PHI | Morris | 108 min |
| Sep 11, 5:43 PM EDT | Flash Flood Warning | PHI | Middlesex | 3 hr |
| Sep 11, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 35 min |
| Sep 11, 6:21 PM EDT | Special Marine Warning | PHI | 54 min | |
| Sep 11, 6:47 PM EDT | Special Weather Statement | PHI | Monmouth | 58 min |
| Sep 11, 7:01 PM EDT | Flash Flood Warning | PHI | Monmouth, Ocean | 6 hr |
| Sep 11, 7:12 PM EDT | Special Marine Warning | PHI | 63 min |
Nearby
Flash Flood Warnings in New Jersey, 2023Every flash flood warning in 2023
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.