Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 146, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 28, 2026, 2:58 PM EDT for Ocean 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
- Aug 28, 2026, 2:58 PM EDT (18:58 UTC)
- Expired
- Aug 28, 2026, 5:36 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 30 km from the middle of the area, began a volume at 19:00 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, 7.0 hours before the alert went out and 165 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
- 821 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 639 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.3
The text
As transmitted.
530
WGUS51 KPHI 281858
FFWPHI
NJC029-282300-
/O.NEW.KPHI.FF.W.0146.260828T1858Z-260828T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
258 PM EDT Fri Aug 28 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
East Central Ocean County in southern New Jersey...
* Until 700 PM EDT.
* At 258 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
0.5 and 1.5 inches of rain have fallen. The expected rainfall rate
is 1 to 2 inches in 1 hour. 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 thunderstorms.
SOURCE...Radar and automated gauges.
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...
Barnegat, Beach Haven West, Waretown, Ocean Acres and Manahawkin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3968 7433 3988 7422 3992 7406 3978 7408
3976 7409 3975 7409 3968 7413 3967 7415
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
PHI2 follow-up statements
194
WGUS71 KPHI 281934
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
334 PM EDT Fri Aug 28 2026
NJC029-282300-
/O.CON.KPHI.FF.W.0146.000000T0000Z-260828T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ocean NJ-
334 PM EDT Fri Aug 28 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING
FOR EAST CENTRAL OCEAN COUNTY...
At 334 PM EDT, Doppler radar and automated rain gauges indicated that
heavy rain had fallen across the warned area. Between 1 and 2 inches
of rain have fallen. Flooding impacts will continue, but no
additional rainfall is expected. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Barnegat, Beach Haven West, Waretown, Ocean Acres and Manahawkin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3968 7433 3988 7422 3992 7406 3978 7408
3976 7409 3975 7409 3968 7413 3967 7415
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
PHI352
WGUS71 KPHI 282136
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
536 PM EDT Fri Aug 28 2026
NJC029-282146-
/O.CAN.KPHI.FF.W.0146.000000T0000Z-260828T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ocean NJ-
536 PM EDT Fri Aug 28 2026
...FLASH FLOOD WARNING IS CANCELLED FOR EAST CENTRAL OCEAN COUNTY...
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 3968 7433 3988 7422 3992 7406 3978 7408
3976 7409 3975 7409 3968 7413 3967 7415
$$
PHIThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 8:09 PM EDT | Areal Flood Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Somerset | 5 hr |
| Aug 28, 11:12 AM EDT | Special Marine Warning | PHI | 63 min | |
| Aug 28, 12:14 PM EDT | Special Marine Warning | PHI | 61 min | |
| Aug 28, 1:03 PM EDT | Flash Flood Warning | PHI | Atlantic | 4 hr |
| Aug 28, 1:32 PM EDT | Special Marine Warning | PHI | 58 min | |
| Aug 28, 1:48 PM EDT | Flash Flood Warning | PHI | Atlantic, Burlington, Ocean | 4 hr |
| Aug 28, 2:02 PM EDT | Special Marine Warning | PHI | 58 min | |
| Aug 28, 2:08 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 52 min |
| Aug 28, 2:11 PM EDT | Special Marine Warning | PHI | 64 min | |
| Aug 28, 2:44 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 31 min |
| Aug 28, 3:10 PM EDT | Special Marine Warning | PHI | 95 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.