Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 69, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 27, 2026, 6:07 PM EDT for Atlantic County, New Jersey. It was in force for 4 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
- Jul 27, 2026, 6:07 PM EDT (22:07 UTC)
- Expired
- Jul 27, 2026, 10:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Atlantic County, NJ
The radar
The Philadelphia radar (KDIX), 50 km from the middle of the area, began a volume at 22:06 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 |
|---|---|---|---|
| Jul 27, 6:31 PM EDT | FLASH FLOOD | 1 N Hammonton, NJ | Numerous stranded cars and water as deep as two feet measured in the street. |
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, 10.1 hours before the alert went out and 216 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.
742
WGUS51 KPHI 272207
FFWPHI
NJC001-280215-
/O.NEW.KPHI.FF.W.0069.260727T2207Z-260728T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
607 PM EDT Mon Jul 27 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northwestern Atlantic County in southern New Jersey...
* Until 1015 PM EDT.
* At 607 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. The expected rainfall rate is 2 to 3 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...
Hammonton, Folsom and Collings Lakes.
This includes Atlantic City Expressway between mile markers 24 and
29.
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 3954 7483 3959 7490 3960 7488 3961 7488
3961 7487 3964 7484 3965 7483 3966 7481
3967 7481 3967 7480 3968 7480 3969 7479
3963 7468
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...2-3 INCHES IN 1 HOUR
$$
MJL2 follow-up statements
818
WGUS71 KPHI 272211
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
611 PM EDT Mon Jul 27 2026
NJC001-280215-
/O.CON.KPHI.FF.W.0069.000000T0000Z-260728T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Atlantic NJ-
611 PM EDT Mon Jul 27 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT THIS
EVENING FOR NORTHWESTERN ATLANTIC COUNTY...
At 611 PM EDT, local law enforcement reported thunderstorms
producing heavy rain across the warned area. Between 2 and 3 inches
of rain have fallen. The expected rainfall rate is 2 to 3 inches in
1 hour. Flash flooding is already occurring.
HAZARD...Life threatening flash flooding caused by thunderstorms.
SOURCE...Law enforcement reported.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets, and underpasses.
Some locations that may experience flash flooding include...
Hammonton, Folsom and Collings Lakes.
This includes Atlantic City Expressway between mile markers 24 and
29.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3954 7483 3959 7490 3960 7488 3961 7488
3961 7487 3964 7484 3965 7483 3966 7481
3967 7481 3967 7480 3968 7480 3969 7479
3963 7468
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...2-3 INCHES IN 1 HOUR
$$
MJL883
WGUS71 KPHI 280221
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
1021 PM EDT Mon Jul 27 2026
NJC001-280231-
/O.EXP.KPHI.FF.W.0069.000000T0000Z-260728T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Atlantic NJ-
1021 PM EDT Mon Jul 27 2026
...FLASH FLOOD WARNING HAS EXPIRED FOR NORTHWESTERN ATLANTIC
COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 3954 7483 3959 7490 3960 7488 3961 7488
3961 7487 3964 7484 3965 7483 3966 7481
3967 7481 3967 7480 3968 7480 3969 7479
3963 7468
$$
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, 5:49 PM EDT | Flash Flood Warning | PHI | Middlesex | 3 hr |
| Jul 27, 6:06 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Gloucester | 39 min |
| 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.