Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 102, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 5, 2026, 5:29 PM EDT for Middlesex County, New Jersey. It was in force for 3 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
- Aug 5, 2026, 5:29 PM EDT (21:29 UTC)
- Expired
- Aug 5, 2026, 8:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Middlesex County, NJ
The radar
The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 21:29 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 |
|---|---|---|---|
| Aug 5, 5:30 PM EDT | FLASH FLOOD | 2 Se Metuchen, NJ | Reports of flooding on the New Jersey Turnpike within the car lanes. |
| Aug 5, 5:35 PM EDT | FLASH FLOOD | Iselin, NJ | A few reports of flooding reported on the Garden State Parkway from about Lincoln Highway to US-1. |
| Aug 5, 5:40 PM EDT | FLASH FLOOD | Avenel, NJ | A couple reports of flooding on US-1 South and US-9 North between State Route 35 and Rodgers Street/Inman Avenue. |
| Aug 5, 6:15 PM EDT | RAIN 1.15 | Avenel, NJ | |
| Aug 5, 6:25 PM EDT | FLASH FLOOD | 1 Sw Iselin, NJ | Report from mPING: Street/road flooding; Street/road closed; Vehicles stranded. |
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, 9.5 hours before the alert went out and 126 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
- 1372 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
361
WGUS51 KPHI 052129
FFWPHI
NJC023-060030-
/O.NEW.KPHI.FF.W.0102.260805T2129Z-260806T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
529 PM EDT Wed Aug 5 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northeastern Middlesex County in northern New Jersey...
* Until 830 PM EDT.
* At 529 PM EDT, Doppler radar indicated heavy rain across the
warned area. Between 0.5 and 1 inch of rain has fallen. Additional
rainfall amounts up to 1 inch are possible in the warned area.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by heavy rainfall.
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...
New Brunswick, Perth Amboy, Edison, East Brunswick, Carteret,
Colonia, Society Hill, Woodbridge, South Plainfield, Highland
Park, Metuchen and Fords.
This includes the following highways...
New Jersey Turnpike between exits 11 and 13.
Interstate 287 in New Jersey between mile markers 0 and 7.
Garden State Parkway between mile markers 126 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4060 7445 4061 7431 4060 7430 4059 7429
4060 7426 4060 7423 4060 7422 4059 7421
4056 7422 4056 7423 4055 7425 4052 7425
4050 7426 4050 7428 4049 7429 4049 7427
4048 7428 4047 7435 4049 7443 4053 7448
FLASH FLOOD...RADAR INDICATED
$$
Fitzsimmons2 follow-up statements
712
WGUS71 KPHI 052312
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
712 PM EDT Wed Aug 5 2026
NJC023-060030-
/O.CON.KPHI.FF.W.0102.000000T0000Z-260806T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex NJ-
712 PM EDT Wed Aug 5 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT THIS
EVENING FOR NORTHEASTERN MIDDLESEX COUNTY...
At 712 PM EDT, Doppler radar and automated rain gauges indicated
that rain amounts of 1 to 2 inches have fallen with the heavy rain
that just moved through the area. This has led to multiple reports
of flash flooding on roadways. The heavy rain has moved out but it
will take some time for waters to recede so the Flash Flood Warning
remains in effect.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
New Brunswick, Perth Amboy, Edison, East Brunswick, Carteret,
Colonia, Society Hill, Woodbridge, South Plainfield, Highland
Park, Metuchen and Fords.
This includes the following highways...
New Jersey Turnpike between exits 11 and 13.
Interstate 287 in New Jersey between mile markers 0 and 7.
Garden State Parkway between mile markers 126 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4060 7445 4061 7431 4060 7430 4059 7429
4060 7426 4060 7423 4060 7422 4059 7421
4056 7422 4056 7423 4055 7425 4052 7425
4050 7426 4050 7428 4049 7429 4049 7427
4048 7428 4047 7435 4049 7443 4053 7448
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Fitzsimmons672
WGUS71 KPHI 060023
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
823 PM EDT Wed Aug 5 2026
NJC023-060033-
/O.EXP.KPHI.FF.W.0102.000000T0000Z-260806T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex NJ-
823 PM EDT Wed Aug 5 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 830 PM EDT THIS EVENING FOR
NORTHEASTERN MIDDLESEX COUNTY...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 4060 7445 4061 7431 4060 7430 4059 7429
4060 7426 4060 7423 4060 7422 4059 7421
4056 7422 4056 7423 4055 7425 4052 7425
4050 7426 4050 7428 4049 7429 4049 7427
4048 7428 4047 7435 4049 7443 4053 7448
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 12:58 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester | 6 hr |
| Aug 5, 1:13 PM EDT | Flash Flood Warning | PHI | Gloucester | 5 hr |
| Aug 5, 1:23 PM EDT | Flash Flood Warning | PHI | Burlington, Mercer | 4 hr |
| Aug 5, 1:50 PM EDT | Heat Advisory | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 6 more | 3 days |
| Aug 5, 2:50 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer | 4 hr |
| Aug 5, 3:33 PM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 86 min |
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.