Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 11, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 22, 2026, 6:36 PM EDT for Burlington County, New Jersey; Philadelphia 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
- Jun 22, 2026, 6:36 PM EDT (22:36 UTC)
- Expired
- Jun 22, 2026, 9:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burlington County, NJ, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 22:36 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 |
|---|---|---|---|
| Jun 22, 6:40 PM EDT | FLOOD | 1 Ssw Summerdale, PA | Frankford Creek Gauge crested at moderate flood stage. |
| Jun 22, 6:40 PM EDT | FLASH FLOOD | 1 Ssw Summerdale, PA | Corrects previous flood report from 1 SSW Summerdale. Frankford Creek Gauge crested at moderate flood stage. |
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, 10.6 hours before the alert went out and 211 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.
199
WGUS51 KPHI 222236
FFWPHI
NJC005-PAC101-230130-
/O.NEW.KPHI.FF.W.0011.260622T2236Z-260623T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
636 PM EDT Mon Jun 22 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northwestern Burlington County in southern New Jersey...
Central Philadelphia County in southeastern Pennsylvania...
* Until 930 PM EDT.
* At 636 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
0.5 and 1.5 inches of rain have fallen. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
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...
Philadelphia, Riverside, Palmyra, Wissinoming, Tacony, Pennsauken,
Cinnaminson and Riverton.
This includes the following highways...
Interstate 76 in Pennsylvania near mile marker 340.
Interstate 95 in Pennsylvania between mile markers 26 and 31.
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 4001 7521 4002 7522 4005 7489 3999 7497
3999 7502 4000 7503 3999 7506 3999 7513
4000 7519
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
MJL2 follow-up statements
565
WGUS71 KPHI 230109
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
909 PM EDT Mon Jun 22 2026
NJC005-PAC101-230130-
/O.CON.KPHI.FF.W.0011.000000T0000Z-260623T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Philadelphia PA-
909 PM EDT Mon Jun 22 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT THIS
EVENING FOR NORTHWESTERN BURLINGTON AND CENTRAL PHILADELPHIA
COUNTIES...
At 909 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
0.5 and 1.5 inches of rain have fallen. Flooding impacts will
continue, but no additional rainfall is expected. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Philadelphia, Riverside, Palmyra, Wissinoming, Tacony, Pennsauken,
Cinnaminson and Riverton.
This includes the following highways...
Interstate 76 in Pennsylvania near mile marker 340.
Interstate 95 in Pennsylvania between mile markers 26 and 31.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4001 7521 4002 7522 4005 7489 3999 7497
3999 7502 4000 7503 3999 7506 3999 7513
4000 7519
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Guzzo142
WGUS71 KPHI 230123
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
923 PM EDT Mon Jun 22 2026
NJC005-PAC101-230133-
/O.EXP.KPHI.FF.W.0011.000000T0000Z-260623T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Philadelphia PA-
923 PM EDT Mon Jun 22 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 930 PM EDT THIS EVENING FOR
NORTHWESTERN BURLINGTON AND CENTRAL PHILADELPHIA COUNTIES...
The heavy rain has ended and flood waters have receded. 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 4001 7521 4002 7522 4005 7489 3999 7497
3999 7502 4000 7503 3999 7506 3999 7513
4000 7519
$$
StaarmannThe 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 | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth, Ocean | 39 min |
| Jun 22, 6:48 PM EDT | Flash Flood Warning | PHI | Burlington, Mercer, Middlesex, Monmouth | 3 hr |
| 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.