Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 145, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 28, 2026, 1:48 PM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 4 hr. 9 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 28, 2026, 1:48 PM EDT (17:48 UTC)
- Expired
- Aug 28, 2026, 5:45 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Atlantic County, NJ, Burlington County, NJ, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 44 km from the middle of the area, began a volume at 17:50 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 28, 1:56 PM EDT | RAIN 1.34 | 1 Nne Holgate, NJ | Mesonet station EW4321 Beach Haven. |
| Aug 28, 2:45 PM EDT | RAIN 1.42 | 1 Nne Surf City, NJ | Mesonet station FW2015 Surf City. |
| Aug 28, 2:55 PM EDT | RAIN 1.7 | Ship Bottom, NJ | Mesonet station 1183D Ship Bottom. |
| Aug 28, 2:56 PM EDT | RAIN 1.5 | 1 Nne Holgate, NJ | Mesonet station EW4321 Beach Haven. |
| Aug 28, 2:58 PM EDT | RAIN 1.7 | Ship Bottom, NJ | Mesonet station DW8565 Ship Bottom. |
| Aug 28, 5:15 PM EDT | RAIN 1.45 | 1 Nne Surf City, NJ | Mesonet station FW2015 Surf City. |
| Aug 28, 5:25 PM EDT | RAIN 1.72 | Ship Bottom, NJ | Mesonet station 1183D Ship Bottom. |
| Aug 28, 5:26 PM EDT | RAIN 1.5 | 1 Nne Holgate, NJ | Mesonet station EW4321 Beach Haven. |
| Aug 28, 5:26 PM EDT | RAIN 1.72 | Ship Bottom, NJ | Mesonet station DW8565 Ship Bottom. |
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, 5.8 hours before the alert went out and 196 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.
186
WGUS51 KPHI 281748
FFWPHI
NJC001-005-029-282145-
/O.NEW.KPHI.FF.W.0145.260828T1748Z-260828T2145Z/
/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
148 PM EDT Fri Aug 28 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
East Central Atlantic County in southern New Jersey...
Southeastern Burlington County in southern New Jersey...
South Central Ocean County in southern New Jersey...
* Until 545 PM EDT.
* At 148 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 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 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...
Egg Harbor City, Tuckerton, Surf City, Port Republic, Bass River
State Forest, New Gretna, Wading River, Beach Haven West and Mystic
Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3957 7468 3958 7469 3969 7456 3967 7414
3955 7423 3951 7427 3949 7429 3950 7429
3950 7431 3948 7429 3947 7430
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
PHI3 follow-up statements
678
WGUS71 KPHI 281823
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
223 PM EDT Fri Aug 28 2026
NJC001-005-029-282145-
/O.CON.KPHI.FF.W.0145.000000T0000Z-260828T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Atlantic NJ-Burlington NJ-Ocean NJ-
223 PM EDT Fri Aug 28 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM EDT THIS
AFTERNOON FOR EAST CENTRAL ATLANTIC, SOUTHEASTERN BURLINGTON AND
SOUTH CENTRAL OCEAN COUNTIES...
At 223 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 1
and 2 inches of rain have fallen. The expected rainfall rate is 1 to
2 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected to
begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Egg Harbor City, Tuckerton, Surf City, Port Republic, Bass River
State Forest, New Gretna, Wading River, Beach Haven West and Mystic
Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3957 7468 3958 7469 3969 7456 3967 7414
3955 7423 3951 7427 3949 7429 3950 7429
3950 7431 3948 7429 3947 7430
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
PHI876
WGUS71 KPHI 281916
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
316 PM EDT Fri Aug 28 2026
NJC001-005-029-282145-
/O.CON.KPHI.FF.W.0145.000000T0000Z-260828T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Atlantic NJ-Burlington NJ-Ocean NJ-
316 PM EDT Fri Aug 28 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM EDT THIS
AFTERNOON FOR EAST CENTRAL ATLANTIC, SOUTHEASTERN BURLINGTON AND
SOUTH CENTRAL OCEAN COUNTIES...
At 316 PM EDT, Doppler radar and automated rain gauges indicated that
heavy rain had fallen over 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...
Tuckerton, Surf City, Port Republic, Bass River State Forest, New
Gretna, Beach Haven West and Mystic Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3954 7456 3968 7441 3967 7414 3954 7424
3949 7429 3950 7429 3950 7431 3948 7429
3947 7430
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
PHI435
WGUS71 KPHI 282135
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
535 PM EDT Fri Aug 28 2026
NJC001-005-029-282145-
/O.EXP.KPHI.FF.W.0145.000000T0000Z-260828T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Atlantic NJ-Burlington NJ-Ocean NJ-
535 PM EDT Fri Aug 28 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 545 PM EDT THIS AFTERNOON FOR
EAST CENTRAL ATLANTIC, SOUTHEASTERN BURLINGTON AND SOUTH CENTRAL
OCEAN COUNTIES...
The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 3954 7456 3968 7441 3967 7414 3954 7424
3949 7429 3950 7429 3950 7431 3948 7429
3947 7430
$$
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, 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, 2:58 PM EDT | Flash Flood Warning | PHI | Ocean | 3 hr |
| 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.