Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 114, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 7, 2026, 5:34 PM EDT for Burlington County, Mercer County, New Jersey; Bucks County, Pennsylvania. It was in force for 3 hr. 2 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 7, 2026, 5:34 PM EDT (21:34 UTC)
- Expired
- Aug 7, 2026, 8:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burlington County, NJ, Mercer County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 37 km from the middle of the area, began a volume at 21:35 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 7, 6:43 PM EDT | FLASH FLOOD | 1 W Yardville, NJ | NJ DOT: Flooding on I-195 Eastbound West of Exit 3 - Hamilton Square-Yardville Rd (Hamilton Twp), 1 right lane of 2 lanes, right shoulder closed. Time from report. |
| Aug 7, 6:48 PM EDT | FLASH FLOOD | 2 W Yardville, NJ | NJ DOT: Flooding on US 206 Southbound at I-195 (Bordentown Twp), ramp lane closed. Time from report. |
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, 9.6 hours before the alert went out and 169 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
- 2423 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 685 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.1
The text
As transmitted.
945
WGUS51 KPHI 072134
FFWPHI
NJC005-021-PAC017-080030-
/O.NEW.KPHI.FF.W.0114.260807T2134Z-260808T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
534 PM EDT Fri Aug 7 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Central Mercer County in central New Jersey...
North Central Burlington County in southern New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
* Until 830 PM EDT.
* At 534 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1 inch of rain
has 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.
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...
Trenton, Ewing, Princeton, Florence, Burlington, Bristol,
Bordentown, Yardley, Tullytown, Langhorne, White Horse and
Mercerville-Hamilton Square.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 57 and 72.
New Jersey Turnpike between exits 6 and 6A...and
near exit 8.
Interstate 195 in New Jersey between mile markers 0 and 7.
Interstate 95 in Pennsylvania between mile markers 39 and 40.
Pennsylvania Turnpike between mile markers 354 and 359.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4026 7485 4035 7468 4023 7450 4023 7452
4022 7453 4022 7454 4021 7455 4019 7460
4018 7461 4006 7484 4018 7500
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
Cooper3 follow-up statements
067
WGUS71 KPHI 072248
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
648 PM EDT Fri Aug 7 2026
NJC005-021-PAC017-080030-
/O.CON.KPHI.FF.W.0114.000000T0000Z-260808T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Mercer NJ-Bucks PA-
648 PM EDT Fri Aug 7 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT THIS
EVENING FOR CENTRAL MERCER, NORTH CENTRAL BURLINGTON AND
SOUTHEASTERN BUCKS COUNTIES...
At 648 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 0.5 and 1.5 inches of rain have
fallen. Additional rainfall amounts up to 0.5 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Trenton, Ewing, Princeton, Florence, Burlington, Bristol,
Bordentown, Yardley, Tullytown, Langhorne, White Horse and
Mercerville-Hamilton Square.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 57 and 72.
New Jersey Turnpike between exits 6 and 6A...and
near exit 8.
Interstate 195 in New Jersey between mile markers 0 and 7.
Interstate 95 in Pennsylvania between mile markers 39 and 40.
Pennsylvania Turnpike between mile markers 354 and 359.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4026 7485 4035 7468 4023 7450 4023 7452
4022 7453 4022 7454 4021 7455 4019 7460
4018 7461 4006 7484 4018 7500
FLASH FLOOD...RADAR INDICATED
$$
Cooper930
WGUS71 KPHI 072302
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
702 PM EDT Fri Aug 7 2026
NJC005-021-PAC017-080030-
/O.CON.KPHI.FF.W.0114.000000T0000Z-260808T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Mercer NJ-Bucks PA-
702 PM EDT Fri Aug 7 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT THIS
EVENING FOR CENTRAL MERCER, NORTH CENTRAL BURLINGTON AND
SOUTHEASTERN BUCKS COUNTIES...
At 702 PM EDT, emergency management reported thunderstorms producing
heavy rain across the warned area with numerous instances of flash
flooding near and along Interstate 195. Between 0.5 and 1.5 inches
of rain have fallen. Additional rainfall amounts up to 0.5 inches
are possible in the warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Emergency management reported.
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...
Trenton, Ewing, Princeton, Florence, Burlington, Bristol,
Bordentown, Yardley, Tullytown, Langhorne, White Horse and
Mercerville-Hamilton Square.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 57 and 72.
New Jersey Turnpike between exits 6 and 6A...and
near exit 8.
Interstate 195 in New Jersey between mile markers 0 and 7.
Interstate 95 in Pennsylvania between mile markers 39 and 40.
Pennsylvania Turnpike between mile markers 354 and 359.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4026 7485 4035 7468 4023 7450 4023 7452
4022 7453 4022 7454 4021 7455 4019 7460
4018 7461 4006 7484 4018 7500
FLASH FLOOD...OBSERVED
$$
Cooper055
WGUS71 KPHI 080020
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
820 PM EDT Fri Aug 7 2026
NJC005-021-PAC017-080030-
/O.EXP.KPHI.FF.W.0114.000000T0000Z-260808T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Mercer NJ-Bucks PA-
820 PM EDT Fri Aug 7 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 830 PM EDT THIS EVENING FOR
CENTRAL MERCER, NORTH CENTRAL BURLINGTON AND SOUTHEASTERN BUCKS
COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 4026 7485 4035 7468 4023 7450 4023 7452
4022 7453 4022 7454 4021 7455 4019 7460
4018 7461 4006 7484 4018 7500
$$
CooperThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 50 min |
| Aug 7, 2:53 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 67 min |
| Aug 7, 3:16 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 44 min |
| Aug 7, 3:25 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 65 min |
| Aug 7, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 54 min |
| Aug 7, 4:24 PM EDT | Flash Flood Warning | PHI | Sussex, Warren | 4 hr |
| Aug 7, 4:42 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 25 min |
| Aug 7, 4:43 PM EDT | Special Marine Warning | PHI | 48 min | |
| Aug 7, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset and 1 more | 55 min |
| Aug 7, 4:56 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Sussex, Warren | 3 hr |
| Aug 7, 5:01 PM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 3 hr |
| Aug 7, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Mercer | 44 min |
| Aug 7, 5:18 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Somerset, Sussex | 3 hr |
| Aug 7, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset | 50 min |
| Aug 7, 5:42 PM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Morris, Somerset | 3 hr |
| Aug 7, 5:45 PM EDT | Special Marine Warning | PHI | 60 min | |
| Aug 7, 5:48 PM EDT | Special Marine Warning | PHI | 57 min | |
| Aug 7, 6:37 PM EDT | Special Marine Warning | PHI | 53 min | |
| Aug 7, 6:39 PM EDT | Flash Flood Warning | PHI | Monmouth | 3 hr |
| Aug 7, 7:19 PM EDT | Areal Flood Warning | PHI | Warren | 4 hr |
| Aug 7, 2:58 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 62 min |
| Aug 7, 3:25 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Aug 7, 3:37 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 3 hr |
| Aug 7, 4:04 PM EDT | Flash Flood Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 2 hr |
| Aug 7, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 64 min |
Nearby
Flash Flood Warnings in New Jersey, 2026Flash Flood Warnings in Pennsylvania, 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.