Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 12, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 22, 2026, 6:48 PM EDT for 4 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 22, 2026, 6:48 PM EDT (22:48 UTC)
- Expired
- Jun 22, 2026, 9:45 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, Middlesex County, NJ, Monmouth County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 40 km from the middle of the area, began a volume at 22:49 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.8 hours before the alert went out and 166 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1598 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
191
WGUS51 KPHI 222248
FFWPHI
NJC005-021-023-025-PAC017-230145-
/O.NEW.KPHI.FF.W.0012.260622T2248Z-260623T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
648 PM EDT Mon Jun 22 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Mercer County in central New Jersey...
Southwestern Monmouth County in central New Jersey...
Southwestern Middlesex County in northern New Jersey...
North Central Burlington County in southern New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
* Until 945 PM EDT.
* At 648 PM EDT, trained weather spotters reported thunderstorms
producing heavy rain in Quaker Bridge Mall. Between 0.5 and 1.5
inches of rain have fallen. The expected rainfall rate is 1 to 2
inches in 1 hour. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Trained spotters 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, Jamesburg, Hightstown, Bordentown,
Cranbury, Pennington, Yardley, Allentown, Langhorne and Roosevelt.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 56 and 76.
New Jersey Turnpike between exits 7 and 9.
Interstate 195 in New Jersey between mile markers 0 and 16.
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 4038 7472 4039 7465 4038 7462 4039 7459
4035 7441 4017 7439 4017 7441 4006 7457
4005 7480 4012 7472 4018 7481 4015 7496
4030 7484
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
MJL2 follow-up statements
263
WGUS71 KPHI 230112
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
912 PM EDT Mon Jun 22 2026
NJC005-021-023-025-PAC017-230145-
/O.CON.KPHI.FF.W.0012.000000T0000Z-260623T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Mercer NJ-Middlesex NJ-Monmouth NJ-Bucks PA-
912 PM EDT Mon Jun 22 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT THIS
EVENING FOR MERCER, SOUTHWESTERN MONMOUTH, SOUTHWESTERN MIDDLESEX,
NORTH CENTRAL BURLINGTON AND SOUTHEASTERN BUCKS COUNTIES...
At 912 PM EDT, trained weather spotters reported thunderstorms
producing heavy rain in Quaker Bridge Mall. Between 1 and 2 inches
of rain have fallen. Additional rainfall amounts up to 0.5 inches
are possible in the warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Trained spotters reported.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Trenton, Ewing, Princeton, Jamesburg, Hightstown, Bordentown,
Cranbury, Pennington, Yardley, Allentown, Langhorne and Roosevelt.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 56 and 76.
New Jersey Turnpike between exits 7 and 9.
Interstate 195 in New Jersey between mile markers 0 and 16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4038 7472 4039 7465 4038 7462 4039 7459
4035 7441 4017 7439 4017 7441 4006 7457
4005 7480 4012 7472 4018 7481 4015 7496
4030 7484
FLASH FLOOD...OBSERVED
$$
Guzzo867
WGUS71 KPHI 230142
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
942 PM EDT Mon Jun 22 2026
NJC005-021-023-025-PAC017-230152-
/O.EXP.KPHI.FF.W.0012.000000T0000Z-260623T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Mercer NJ-Middlesex NJ-Monmouth NJ-Bucks PA-
942 PM EDT Mon Jun 22 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 945 PM EDT THIS EVENING FOR
MERCER, SOUTHWESTERN MONMOUTH, SOUTHWESTERN MIDDLESEX, 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.
A Flood Watch remains in effect until 600 AM EDT Tuesday for
portions of northern Delaware, New Jersey, and southeast
Pennsylvania.
&&
LAT...LON 4038 7472 4039 7465 4038 7462 4039 7459
4035 7441 4017 7439 4017 7441 4006 7457
4005 7480 4012 7472 4018 7481 4015 7496
4030 7484
$$
GuzzoThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 2:13 AM EDT | Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 4 more | 25 hr |
| Jun 22, 2:20 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 40 min |
| Jun 22, 2:55 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Monmouth, Ocean | 50 min |
| Jun 22, 3:23 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 22 min |
| Jun 22, 3:26 PM EDT | Special Marine Warning | PHI | 84 min | |
| Jun 22, 5:18 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer | 42 min |
| Jun 22, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 53 min |
| Jun 22, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth | 52 min |
| Jun 22, 6:02 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 43 min |
| Jun 22, 6:09 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Mercer, Monmouth | 51 min |
| Jun 22, 6:21 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 39 min |
| Jun 22, 6:26 PM EDT | Flash Flood Warning | PHI | Burlington | 4 hr |
| Jun 22, 6:36 PM EDT | Flash Flood Warning | PHI | Burlington | 3 hr |
| Jun 22, 6:36 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth, Ocean | 39 min |
| Jun 22, 6:59 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jun 22, 6:59 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester | 46 min |
| Jun 22, 7:06 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester | 3 hr |
| Jun 22, 7:30 PM EDT | Special Marine Warning | PHI | 60 min | |
| Jun 22, 7:40 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Ocean | 50 min |
| Jun 22, 4:15 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware, Montgomery | 45 min |
| Jun 22, 4:35 PM EDT | Tornado Warning | PHI | Berks, Chester, Delaware, Montgomery | 25 min |
| Jun 22, 4:56 PM EDT | Tornado Warning | PHI | Chester, Delaware, Montgomery | 34 min |
| Jun 22, 6:02 PM EDT | Flash Flood Warning | PHI | Delaware, Montgomery, Philadelphia | 4 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.