Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 154, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 5, 2026, 1:13 AM EDT for Cape May County, Cumberland County, New Jersey. It was in force for 2 hr. 1 report 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 5, 2026, 1:13 AM EDT (05:13 UTC)
- Expired
- Sep 5, 2026, 3:33 AM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cape May County, NJ, Cumberland County, NJ
The radar
The Dover AFB radar (KDOX), 54 km from the middle of the area, began a volume at 05:13 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 5, 2:30 AM EDT | FLOOD | North Wildwood, NJ | Minor street flooding. |
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, 5.2 hours before the alert went out and 213 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
- 809 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 980 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted.
829
WGUS51 KPHI 050513
FFWPHI
NJC009-011-050915-
/O.NEW.KPHI.FF.W.0154.260905T0513Z-260905T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
113 AM EDT Sat Sep 5 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Southwestern Cape May County in southern New Jersey...
Southeastern Cumberland County in southern New Jersey...
* Until 515 AM EDT.
* At 113 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in 30
minutes. Additional rainfall amounts of 1 to 2 inches are possible
in the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
* Some locations that will experience flash flooding include...
North Wildwood, Sea Isle City, Avalon, Stone Harbor, Goshen, Green
Creek, Cape May Court House, Eldora, Dennisville, Rio Grande and
Scotch Bonnet.
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 3922 7503 3925 7500 3917 7467 3899 7476
3904 7493 3906 7503 3910 7514
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 30 MINUTES
$$1 follow-up statement
977
WGUS71 KPHI 050733
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
333 AM EDT Sat Sep 5 2026
NJC009-011-050743-
/O.CAN.KPHI.FF.W.0154.000000T0000Z-260905T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cape May NJ-Cumberland NJ-
333 AM EDT Sat Sep 5 2026
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN CAPE MAY AND
SOUTHEASTERN CUMBERLAND COUNTIES...
The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 3922 7503 3925 7500 3917 7467 3899 7476
3904 7493 3906 7503 3910 7514
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 1:38 AM EDT | Special Marine Warning | PHI | 67 min | |
| Sep 5, 4:13 PM EDT | Coastal Flood Advisory | PHI | Atlantic, Cape May, Cumberland | 29 hr |
Nearby
Flash Flood Warnings in New Jersey, 2026Every flash flood warning in 2026
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.