Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 68, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 27, 2026, 5:49 PM EDT for Middlesex County, New Jersey. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 27, 2026, 5:49 PM EDT (21:49 UTC)
- Expired
- Jul 27, 2026, 9:16 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), 70 km from the middle of the area, began a volume at 21:52 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.8 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
- 199 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 928 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
025
WGUS51 KPHI 272149
FFWPHI
NJC023-280200-
/O.NEW.KPHI.FF.W.0068.260727T2149Z-260728T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
549 PM EDT Mon Jul 27 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northeastern Middlesex County in northern New Jersey...
* Until 1000 PM EDT.
* At 549 PM 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 1
hour. 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...
Edison, Middlesex, Colonia, Woodbridge, South Plainfield,
Metuchen, Dunellen, Iselin, Fords, Avenel, Sewaren and Port
Reading.
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 129 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4056 7423 4055 7425 4054 7425 4050 7436
4058 7452 4060 7446 4061 7431 4059 7429
4060 7424 4056 7422
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
MJL1 follow-up statement
171
WGUS71 KPHI 280116
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
916 PM EDT Mon Jul 27 2026
NJC023-280126-
/O.CAN.KPHI.FF.W.0068.000000T0000Z-260728T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex NJ-
916 PM EDT Mon Jul 27 2026
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN MIDDLESEX
COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 4056 7423 4055 7425 4054 7425 4050 7436
4058 7452 4060 7446 4061 7431 4059 7429
4060 7424 4056 7422
$$
MJLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 2:13 AM EDT | Small Craft Advisory | PHI | 52 hr | |
| Jul 27, 3:50 AM EDT | Special Marine Warning | PHI | 85 min | |
| Jul 27, 1:57 PM EDT | Special Marine Warning | PHI | 44 min | |
| Jul 27, 2:15 PM EDT | Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 7 more | 38 hr |
| Jul 27, 2:57 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 48 min |
| Jul 27, 3:50 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 40 min |
| Jul 27, 4:21 PM EDT | Severe Thunderstorm Warning | PHI | Mercer | 39 min |
| Jul 27, 4:32 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 31 min |
| Jul 27, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Somerset | 24 min |
| Jul 27, 5:06 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex | 39 min |
| Jul 27, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden | 31 min |
| Jul 27, 5:43 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex | 27 min |
| Jul 27, 6:06 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Gloucester | 39 min |
| Jul 27, 6:07 PM EDT | Flash Flood Warning | PHI | Atlantic | 4 hr |
| Jul 27, 6:28 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 47 min |
| Jul 27, 6:59 PM EDT | Flash Flood Warning | PHI | Gloucester | 2 hr |
| Jul 27, 7:12 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 15 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.