Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 134, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 27, 2026, 2:18 PM EDT for Middlesex County, Monmouth County, New Jersey. It was in force for 4 hr. 18 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 27, 2026, 2:18 PM EDT (18:18 UTC)
- Expired
- Aug 27, 2026, 6:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Middlesex County, NJ, Monmouth County, NJ
The radar
The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 18:20 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 27, 2:30 PM EDT | RAIN 2.3 | 2 Ssw Browntown, NJ | Mesonet station FW8442 Old Bridge. |
| Aug 27, 2:40 PM EDT | RAIN 2.64 | 2 S Spotswood, NJ | Mesonet station CW1053 Monroe Twp. |
| Aug 27, 2:43 PM EDT | FLASH FLOOD | Centerville, NJ | Flooding on NJ 35 Southbound At Centerville Rd (Holmdel Twp), All lanes closed. |
| Aug 27, 3:03 PM EDT | FLASH FLOOD | 1 Nnw Port Monmouth, NJ | Picture sent in of Ocean Ave and Port monmouth rd closed due to flooding. Time in report given. |
| Aug 27, 3:03 PM EDT | FLASH FLOOD | 2 Sse Browntown, NJ | Flooding on NJ 18 Northbound South of Exit 30 - US 9 (Marlboro Twp), 1 left lane of 2 lanes closed. |
| Aug 27, 3:16 PM EDT | RAIN 2.11 | 1 E Keansburg, NJ | Mesonet station CW1367 N.Middletown. |
| Aug 27, 3:20 PM EDT | RAIN 2.64 | 2 S Spotswood, NJ | Mesonet station CW1053 Monroe Twp. |
| Aug 27, 3:30 PM EDT | RAIN 2.3 | 2 Ssw Browntown, NJ | Mesonet station FW8442 Old Bridge. |
| Aug 27, 3:32 PM EDT | RAIN 2.07 | 2 Ssw Browntown, NJ | Mesonet station AV757 Old Bridge. |
| Aug 27, 3:36 PM EDT | RAIN 2.11 | 1 E Keansburg, NJ | Mesonet station CW1367 N.Middletown. |
| Aug 27, 3:40 PM EDT | RAIN 2.67 | 2 S Spotswood, NJ | Mesonet station CW1053 Monroe Twp. |
| Aug 27, 4:15 PM EDT | RAIN 2.59 | 2 Ssw Browntown, NJ | Mesonet station FW8442 Old Bridge. |
| Aug 27, 4:25 PM EDT | RAIN 2.86 | 2 S Spotswood, NJ | Mesonet station CW1053 Monroe Twp. |
| Aug 27, 4:26 PM EDT | RAIN 2.12 | 1 E Keansburg, NJ | Mesonet station CW1367 N.Middletown. |
| Aug 27, 6:15 PM EDT | RAIN 2.71 | 2 Ssw Browntown, NJ | Mesonet station FW8442 Old Bridge. |
| Aug 27, 6:16 PM EDT | RAIN 2.12 | 1 E Keansburg, NJ | Mesonet station CW1367 N.Middletown. |
| Aug 27, 6:17 PM EDT | RAIN 2.4 | 2 Ssw Browntown, NJ | Mesonet station AV757 Old Bridge. |
| Aug 27, 6:20 PM EDT | RAIN 2.86 | 2 S Spotswood, NJ | Mesonet station CW1053 Monroe Twp. |
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, 6.3 hours before the alert went out and 119 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
- 346 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 890 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
088
WGUS51 KPHI 271818
FFWPHI
NJC023-025-272215-
/O.NEW.KPHI.FF.W.0134.260827T1818Z-260827T2215Z/
/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
218 PM EDT Thu Aug 27 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northeastern Monmouth County in central New Jersey...
Southeastern Middlesex County in northern New Jersey...
* Until 615 PM EDT.
* At 218 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2.5 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 indicated.
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...
Long Branch, Sandy Hook, Middletown, Old Bridge, Marlboro, Tinton
Falls, Holmdel, Red Bank, Keansburg, Matawan and Lincroft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4044 7426 4046 7425 4044 7421 4046 7414
4042 7406 4040 7398 4042 7400 4048 7401
4047 7400 4042 7397 4027 7398 4023 7430
4031 7449
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
PHI2 follow-up statements
740
WGUS71 KPHI 271916
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
316 PM EDT Thu Aug 27 2026
NJC023-025-272215-
/O.CON.KPHI.FF.W.0134.000000T0000Z-260827T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex NJ-Monmouth NJ-
316 PM EDT Thu Aug 27 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM EDT THIS
EVENING FOR NORTHEASTERN MONMOUTH AND SOUTHEASTERN MIDDLESEX
COUNTIES...
At 316 PM EDT, local law enforcement reported thunderstorms producing
heavy rain across the warned area. Between 2.5 and 3.5 inches of rain
have fallen. The expected rainfall rate is 1.5 to 2.5 inches in 1
hour. Additional rainfall amounts of 1.5 to 2.5 inches are possible
in the warned area. Flash flooding is already occurring in Keyport
and Holmdel Township.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Law enforcement reported.
IMPACT...Life threatening flash flooding of creeks and streams, urban
areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Long Branch, Sandy Hook, Middletown, Old Bridge, Marlboro, Tinton
Falls, Holmdel, Red Bank, Keansburg, Matawan and Lincroft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4044 7426 4046 7425 4044 7421 4046 7414
4042 7406 4040 7398 4042 7400 4048 7401
4047 7400 4042 7397 4027 7398 4023 7430
4031 7449
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...1.5-2.5 INCHES IN 1 HOUR
$$
PHI628
WGUS71 KPHI 272217
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
617 PM EDT Thu Aug 27 2026
NJC023-025-272227-
/O.EXP.KPHI.FF.W.0134.000000T0000Z-260827T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex NJ-Monmouth NJ-
617 PM EDT Thu Aug 27 2026
...FLASH FLOOD WARNING HAS EXPIRED FOR NORTHEASTERN MONMOUTH AND
SOUTHEASTERN MIDDLESEX COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures. An Areal
Flood Warning has been issued in place of the expiring Flash Flood
Warning.
A Flood Watch remains in effect until 400 AM EDT Friday for portions
of northern Delaware, New Jersey, and Pennsylvania.
&&
LAT...LON 4044 7426 4046 7425 4044 7421 4046 7414
4042 7406 4040 7398 4043 7399 4042 7399
4042 7400 4047 7401 4048 7401 4042 7397
4027 7398 4023 7430 4031 7449
$$
PHIThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 11:38 AM EDT | Flash Flood Warning | PHI | Gloucester | 4 hr |
| Aug 27, 12:26 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 49 min |
| Aug 27, 12:41 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester, Salem | 5 hr |
| Aug 27, 1:06 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex | 24 min |
| Aug 27, 1:07 PM EDT | Flash Flood Warning | PHI | Middlesex, Somerset | 4 hr |
| Aug 27, 1:15 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester | 45 min |
| Aug 27, 1:17 PM EDT | Flash Flood Warning | PHI | Mercer, Somerset | 7 hr |
| Aug 27, 1:20 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 40 min |
| Aug 27, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 49 min |
| Aug 27, 1:32 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 43 min |
| Aug 27, 1:34 PM EDT | Special Marine Warning | PHI | 21 min | |
| Aug 27, 1:50 PM EDT | Flash Flood Warning | PHI | Salem | 4 hr |
| Aug 27, 1:57 PM EDT | Tornado Warning | PHI | Salem | 11 min |
| Aug 27, 2:02 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 28 min |
| Aug 27, 2:13 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 47 min |
| Aug 27, 2:16 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester, Salem | 44 min |
| Aug 27, 2:20 PM EDT | Special Marine Warning | PHI | 40 min | |
| Aug 27, 2:31 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 44 min |
| Aug 27, 2:38 PM EDT | Flash Flood Warning | PHI | Camden | 4 hr |
| Aug 27, 2:58 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 30 min |
| Aug 27, 3:00 PM EDT | Special Marine Warning | PHI | 60 min | |
| Aug 27, 3:04 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden | 41 min |
| Aug 27, 3:26 PM EDT | Areal Flood Warning | PHI | Gloucester, Salem | 5 hr |
| Aug 27, 3:43 PM EDT | Flash Flood Warning | PHI | Camden | 3 hr |
| Aug 27, 4:52 PM EDT | Flash Flood Warning | PHI | Warren | 3 hr |
| Aug 27, 4:59 PM EDT | Areal Flood Warning | PHI | Middlesex, Somerset | 4 hr |
| Aug 27, 5:44 PM EDT | Areal Flood Warning | PHI | Camden, Gloucester | 5 hr |
| Aug 27, 6:17 PM EDT | Areal Flood Warning | PHI | Middlesex, Monmouth | 4 hr |
| Aug 27, 7:00 PM EDT | Flash Flood Warning | PHI | Burlington, Camden | 3 hr |
| Aug 27, 7:26 PM EDT | Special Marine Warning | PHI | 32 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.