Alert archive / New Jersey / Areal Flood Warnings in 2026
Areal Flood Warning 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Aug 27, 2026, 6:17 PM EDT for Middlesex County, Monmouth County, New Jersey. It was in force for 4 hr. 3 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, 6:17 PM EDT (22:17 UTC)
- Expired
- Aug 27, 2026, 10:08 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 22:18 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, 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. |
| Aug 27, 9:30 PM EDT | RAIN 2.89 | 2 Ssw Browntown, NJ | Mesonet station FW8442 Old Bridge. |
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, 10.3 hours before the alert went out and 118 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.
627
WGUS41 KPHI 272217
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
617 PM EDT Thu Aug 27 2026
NJC023-025-280230-
/O.NEW.KPHI.FA.W.0021.260827T2217Z-260828T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex NJ-Monmouth NJ-
617 PM EDT Thu Aug 27 2026
...FLOOD WARNING IN EFFECT UNTIL 1030 PM EDT THIS EVENING...
...REPLACES FLASH FLOOD WARNING...
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Northeastern Monmouth County in central New Jersey...
Southeastern Middlesex County in northern New Jersey...
* WHEN...Until 1030 PM EDT.
* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is imminent or occurring.
* ADDITIONAL DETAILS...
- At 615 PM EDT, local law enforcement reported heavy rain in the
warned area due to thunderstorms. Flooding is ongoing or expected
to begin shortly. Between 2.5 and 3.5 inches of rain have fallen.
- Additional rainfall amounts up to 0.5 inches are possible in the
warned area.
- Some locations that will experience flooding include...
Long Branch, Sandy Hook, Middletown, Old Bridge, Marlboro, Tinton
Falls, Holmdel, Red Bank, Keansburg, Matawan and Lincroft.
- http://www.weather.gov/safety/flood
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 4043 7399 4042 7399
4042 7400 4048 7401 4042 7397 4027 7398
4023 7430 4031 7449
$$
PHI1 follow-up statement
754
WGUS81 KPHI 280208
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
1008 PM EDT Thu Aug 27 2026
NJC023-025-280218-
/O.CAN.KPHI.FA.W.0021.000000T0000Z-260828T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex NJ-Monmouth NJ-
1008 PM EDT Thu Aug 27 2026
...FLOOD WARNING IS CANCELLED...
The Flood Warning is cancelled for portions of central and northern
New Jersey, including the following areas, in central New Jersey,
Monmouth. In northern New Jersey, Middlesex.
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flood Watch remains in effect until 400 AM EDT for portions of
central and southern New Jersey.
A Flood Watch remains in effect until 400 AM EDT for portions of
northern Delaware, New Jersey, and Pennsylvania...
&&
LAT...LON 4044 7426 4046 7425 4044 7421 4046 7414
4042 7406 4040 7398 4043 7399 4042 7399
4042 7400 4048 7401 4042 7397 4027 7398
4023 7430 4031 7449
$$
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, 2:18 PM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth | 4 hr |
| 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, 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
Areal Flood Warnings in New Jersey, 2026Every areal 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.