Alert archive / Pennsylvania / Flash Flood Warnings in 2026
Flash Flood Warning 96, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 5, 2026, 12:58 PM EDT for Bucks County, Montgomery County, Philadelphia County, Pennsylvania; Burlington County, Camden County, Gloucester County, New Jersey. It was in force for 6 hr. 15 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 5, 2026, 12:58 PM EDT (16:58 UTC)
- Expired
- Aug 5, 2026, 6:30 PM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 50 km from the middle of the area, began a volume at 17:00 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 5, 1:30 PM EDT | FLASH FLOOD | 1 Sw Moorestown Twp, NJ | Report from mPING: Street/road flooding; Street/road closed; Vehicles stranded. |
| Aug 5, 1:45 PM EDT | FLASH FLOOD | 1 Nnw Cherry Hill Twp, NJ | Route 38 flooded at Chapel Avenue. |
| Aug 5, 1:45 PM EDT | FLASH FLOOD | 1 Ssw Maple Shade, NJ | Church Road flooded near Route 38. |
| Aug 5, 2:00 PM EDT | RAIN 1.9 | 1 Wsw Cinnaminson, NJ | Mesonet station AR824 Cinnaminson. |
| Aug 5, 2:05 PM EDT | RAIN 1.16 | 1 Se Philadelphia, PA | Mesonet station FW8839 Philadelphia. |
| Aug 5, 2:08 PM EDT | RAIN 1.89 | 1 W Bristol, PA | Mesonet station DCBPA Bristol. |
| Aug 5, 2:10 PM EDT | FLASH FLOOD | 1 Ese Eddington, PA | State Road closed at the intersection of Street and State Roads due to flooding. Time estimated. |
| Aug 5, 2:15 PM EDT | FLASH FLOOD | 1 Nnw Olney - Philadelp, PA | West Cheltenham Avenue flooded. |
| Aug 5, 2:15 PM EDT | FLASH FLOOD | 1 Nnw Olney - Philadelp, PA | West Cheltenham Avenue flooded. |
| Aug 5, 2:30 PM EDT | RAIN 1.88 | 1 Wsw Cinnaminson, NJ | Mesonet station AR824 Cinnaminson. |
| Aug 5, 2:39 PM EDT | RAIN 1.6 | 1 E Lower Southampton T, PA | Mesonet station AV907 TREVOSE. |
| Aug 5, 2:43 PM EDT | RAIN 2.14 | 1 W Bristol, PA | Mesonet station DCBPA Bristol. |
| Aug 5, 2:53 PM EDT | FLASH FLOOD | 1 Nnw Croydon, PA | Flooding on I-95 southbound 2 miles north of Exit 37. There is a lane restriction. |
| Aug 5, 3:15 PM EDT | RAIN 2.05 | 1 Wsw Cinnaminson, NJ | Mesonet station AR824 Cinnaminson. |
| Aug 5, 3:28 PM EDT | RAIN 2.16 | 1 W Bristol, PA | Mesonet station DCBPA Bristol. |
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, 5.0 hours before the alert went out and 202 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
- 1372 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
232
WGUS51 KPHI 051658
FFWPHI
NJC005-007-015-PAC017-091-101-052100-
/O.NEW.KPHI.FF.W.0096.260805T1658Z-260805T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1258 PM EDT Wed Aug 5 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northwestern Burlington County in southern New Jersey...
Northwestern Camden County in southern New Jersey...
Northeastern Gloucester County in southern New Jersey...
South Central Bucks County in southeastern Pennsylvania...
Southeastern Montgomery County in southeastern Pennsylvania...
Central Philadelphia County in southeastern Pennsylvania...
* Until 500 PM EDT.
* At 1258 PM EDT, Doppler radar indicated heavy rainfall moving
towards portions of the warned area. The expected rainfall rate is
0.5 to 1 inch in 30 minutes. Additional rainfall amounts up to 2
inches are possible in the warned area. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by heavy rainfall.
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...
Philadelphia, Camden, Gloucester City, Cherry Hill, Bensalem,
Mount Laurel, Willingboro, Lumberton, Bellmawr, Burlington,
Bristol and Mount Holly.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 25 and 48.
New Jersey Turnpike between exits 3 and 5.
Interstate 76 in Pennsylvania near mile marker 351.
Interstate 95 in Pennsylvania between mile markers 19 and 40.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 76 in New Jersey between mile markers 0 and 3.
Pennsylvania Turnpike between mile markers 348 and 355.
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 4018 7493 4009 7486 3995 7473 3988 7493
3984 7513 4001 7518 4012 7519
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...0.5-1 INCH IN 30 MINUTES
$$
Fitzsimmons4 follow-up statements
578
WGUS71 KPHI 051832
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
232 PM EDT Wed Aug 5 2026
NJC005-007-015-PAC017-091-101-052100-
/O.CON.KPHI.FF.W.0096.000000T0000Z-260805T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-Bucks PA-Montgomery PA-
Philadelphia PA-
232 PM EDT Wed Aug 5 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON FOR NORTHWESTERN BURLINGTON, NORTHWESTERN CAMDEN,
NORTHEASTERN GLOUCESTER, SOUTH CENTRAL BUCKS, SOUTHEASTERN
MONTGOMERY AND CENTRAL PHILADELPHIA COUNTIES...
At 232 PM EDT, the public reported multiple instances of flash
flooding from heavy rain across the warned area. Between 1 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 heavy rain.
SOURCE...Public 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...
Philadelphia, Camden, Gloucester City, Cherry Hill, Bensalem,
Mount Laurel, Willingboro, Lumberton, Bellmawr, Burlington,
Bristol and Mount Holly.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 25 and 48.
New Jersey Turnpike between exits 3 and 5.
Interstate 76 in Pennsylvania near mile marker 351.
Interstate 95 in Pennsylvania between mile markers 19 and 40.
Interstate 676 in Pennsylvania near mile marker 1.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 76 in New Jersey between mile markers 0 and 3.
Pennsylvania Turnpike between mile markers 348 and 355.
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 4018 7493 4009 7486 3995 7473 3988 7493
3984 7513 4001 7518 4012 7519
FLASH FLOOD...OBSERVED
$$
Fitzsimmons159
WGUS71 KPHI 052042
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
442 PM EDT Wed Aug 5 2026
NJC005-007-015-052052-
/O.CAN.KPHI.FF.W.0096.000000T0000Z-260805T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-
442 PM EDT Wed Aug 5 2026
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHWESTERN BURLINGTON,
NORTHWESTERN CAMDEN AND NORTHEASTERN GLOUCESTER COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
&&
LAT...LON 4018 7493 4009 7486 4005 7497 4003 7500
4001 7504 4000 7506 3996 7513 3995 7514
3992 7513 3989 7514 4001 7518 4012 7519
$$
PAC017-091-101-052100-
/O.CON.KPHI.FF.W.0096.000000T0000Z-260805T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bucks PA-Montgomery PA-Philadelphia PA-
442 PM EDT Wed Aug 5 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON FOR SOUTH CENTRAL BUCKS, SOUTHEASTERN MONTGOMERY AND
CENTRAL PHILADELPHIA COUNTIES...
At 442 PM EDT, Doppler radar and automated rain gauges indicated
that heavy rain was falling across the warned area. Between 1 and 2
inches of rain have fallen. Additional rainfall amounts up to 1 inch
are possible in the warned area. Flash flooding has already been
occurring.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Philadelphia, Camden, Bensalem, Bristol, Palmyra, Jenkintown,
Beverly, Rockledge, Abington, Langhorne, Bryn Athyn and Northeast
Philadelphia.
This includes the following highways...
Interstate 76 in Pennsylvania near mile marker 351.
Interstate 95 in Pennsylvania between mile markers 19 and 40.
Pennsylvania Turnpike between mile markers 348 and 355.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4018 7493 4009 7486 4005 7497 4003 7500
4001 7504 4000 7506 3996 7513 3995 7514
3992 7513 3989 7514 4001 7518 4012 7519
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Fitzsimmons056
WGUS51 KPHI 052045
FFWPHI
PAC017-091-101-052230-
/O.EXT.KPHI.FF.W.0096.000000T0000Z-260805T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
445 PM EDT Wed Aug 5 2026
The National Weather Service in Mount Holly has extended the
* Flash Flood Warning for...
South Central Bucks County in southeastern Pennsylvania...
Southeastern Montgomery County in southeastern Pennsylvania...
Central Philadelphia County in southeastern Pennsylvania...
* Until 630 PM EDT.
* At 445 PM EDT, Doppler radar and automated rain gauges indicated
that heavy rain was falling across the warned area. Between 1 and
2 inches of rain have fallen. Additional rainfall amounts up to 1
inch are possible in the warned area. Flash flooding has already
been occurring.
HAZARD...Flash flooding caused by heavy rain.
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, Camden, Bensalem, Bristol, Palmyra, Jenkintown,
Beverly, Rockledge, Abington, Langhorne, Bryn Athyn and Northeast
Philadelphia.
This includes the following highways...
Interstate 95 in Pennsylvania between mile markers 19 and 40.
Pennsylvania Turnpike between mile markers 348 and 355.
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 4018 7493 4009 7486 4005 7497 4003 7500
4001 7504 4000 7506 3996 7513 3995 7514
3992 7513 3989 7514 4001 7518 4012 7519
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Fitzsimmons557
WGUS71 KPHI 052220
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
620 PM EDT Wed Aug 5 2026
PAC017-091-101-052230-
/O.EXP.KPHI.FF.W.0096.000000T0000Z-260805T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bucks PA-Montgomery PA-Philadelphia PA-
620 PM EDT Wed Aug 5 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 630 PM EDT THIS EVENING FOR
SOUTH CENTRAL BUCKS, SOUTHEASTERN MONTGOMERY AND CENTRAL
PHILADELPHIA COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 4018 7493 4009 7486 4005 7497 4003 7500
4001 7504 4000 7506 3996 7513 3995 7514
3992 7513 3989 7514 4001 7518 4012 7519
$$
FitzsimmonsThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 1:13 PM EDT | Flash Flood Warning | PHI | Delaware, Montgomery, Philadelphia | 5 hr |
| Aug 5, 1:23 PM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| Aug 5, 1:50 PM EDT | Heat Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 3 days |
| Aug 5, 2:17 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery | 4 hr |
| Aug 5, 2:50 PM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| Aug 5, 3:33 PM EDT | Flash Flood Warning | PHI | Bucks | 86 min |
| Aug 5, 5:29 PM EDT | Flash Flood Warning | PHI | Middlesex | 3 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2026Flash 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.