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Home Return to list Flash Flood Warning 0105 Issued by the Mount Holly / Philadelphia Forecast Office
Action: New Issued At: 2026-08-05 22:40:42
557
WGUS51 KPHI 060340
FFWPHI
NJC019-027-035-060745-
/O.NEW.KPHI.FF.W.0105.260806T0340Z-260806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1140 PM EDT Wed Aug 5 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Morris County in northern New Jersey...
Northern Somerset County in northern New Jersey...
Northeastern Hunterdon County in northwestern New Jersey...
* Until 345 AM EDT.
* At 1140 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...
Morristown, Bridgewater, Dover, Madison, Florham Park, East
Hanover, Chatham, Boonton, Wharton, Rockaway, Morris Plains and
Mount Arlington.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 17 and 46.
Interstate 78 in New Jersey between mile markers 17 and 38.
Interstate 80 in New Jersey between mile markers 29 and 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...dont 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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4090 7434 4087 7433 4072 7439 4069 7445
4067 7446 4046 7485 4068 7493 4074 7494
4078 7490 4097 7452
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
MPS
Action: Continued Issued At: 2026-08-05 23:45:14
143
WGUS71 KPHI 060444
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
1244 AM EDT Thu Aug 6 2026
NJC019-027-035-060745-
/O.CON.KPHI.FF.W.0105.000000T0000Z-260806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Morris NJ-Somerset NJ-
1244 AM EDT Thu Aug 6 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM EDT EARLY THIS
MORNING FOR MORRIS, NORTHERN SOMERSET AND NORTHEASTERN HUNTERDON
COUNTIES...
At 1244 AM EDT, local law enforcement reported thunderstorms
producing heavy rain in Flooding on Route 46 east of NJ15 in Dover.
Between 1 and 2 inches of rain have fallen. The expected rainfall
rate is 0.5 to 1 inch in 1 hour. Additional rainfall amounts of 1 to
2 inches are possible in the warned area. Flash flooding is already
occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement 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...
Morristown, Bridgewater, Dover, Madison, Florham Park, East
Hanover, Chatham, Boonton, Wharton, Rockaway, Morris Plains and
Mount Arlington.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 17 and 46.
Interstate 78 in New Jersey between mile markers 17 and 38.
Interstate 80 in New Jersey between mile markers 29 and 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...dont 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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4090 7434 4087 7433 4072 7439 4069 7445
4067 7446 4046 7485 4068 7493 4074 7494
4078 7490 4097 7452
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL RATE...0.5-1 INCH IN 1 HOUR
$$
MPS
Action: Continued Issued At: 2026-08-06 00:54:46
862
WGUS71 KPHI 060554
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
154 AM EDT Thu Aug 6 2026
NJC019-027-035-060745-
/O.CON.KPHI.FF.W.0105.000000T0000Z-260806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Morris NJ-Somerset NJ-
154 AM EDT Thu Aug 6 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM EDT EARLY THIS
MORNING FOR MORRIS, NORTHERN SOMERSET AND NORTHEASTERN HUNTERDON
COUNTIES...
At 154 AM EDT, local law enforcement reported flooding on Route 46
east of NJ15 in Dover and flooding on I-80 Westbound at Exit 35.
Between 1.5 and 2.5 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...Law enforcement 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...
Morristown, Bridgewater, Dover, Madison, Florham Park, East
Hanover, Chatham, Boonton, Wharton, Rockaway, Morris Plains and
Mount Arlington.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 17 and 46.
Interstate 78 in New Jersey between mile markers 17 and 38.
Interstate 80 in New Jersey between mile markers 29 and 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...dont 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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4090 7434 4087 7433 4072 7439 4069 7445
4067 7446 4046 7485 4068 7493 4074 7494
4078 7490 4097 7452
FLASH FLOOD...OBSERVED
$$
MPS
Action: Continued Issued At: 2026-08-06 02:05:18
145
WGUS71 KPHI 060705
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
305 AM EDT Thu Aug 6 2026
NJC019-035-060715-
/O.CAN.KPHI.FF.W.0105.000000T0000Z-260806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Somerset NJ-
305 AM EDT Thu Aug 6 2026
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHERN SOMERSET AND
NORTHEASTERN HUNTERDON COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
&&
LAT...LON 4079 7437 4078 7437 4077 7437 4072 7439
4073 7455 4075 7455 4076 7456 4074 7463
4075 7472 4084 7478 4097 7452 4090 7434
4087 7434 4087 7433 4080 7436
$$
NJC027-060745-
/O.CON.KPHI.FF.W.0105.000000T0000Z-260806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-
305 AM EDT Thu Aug 6 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM EDT EARLY THIS
MORNING FOR CENTRAL MORRIS COUNTY...
At 305 AM EDT, local law enforcement reported thunderstorms
producing heavy rain in Flooding on Route 46 east of NJ15 in Dover.
Flooding on I-80 Westbound at Exit 35. Between 1.5 and 2.5 inches of
rain have fallen. Flooding impacts will continue, but no additional
rainfall is expected. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement 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...
Morristown, Dover, Madison, Florham Park, East Hanover, Chatham,
Boonton, Wharton, Rockaway, Morris Plains, Mount Arlington and
Mendham.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 31 and 46.
Interstate 80 in New Jersey between mile markers 29 and 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...dont 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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4079 7437 4078 7437 4077 7437 4072 7439
4073 7455 4075 7455 4076 7456 4074 7463
4075 7472 4084 7478 4097 7452 4090 7434
4087 7434 4087 7433 4080 7436
FLASH FLOOD...OBSERVED
$$
Staarmann
Action: Cancelled Issued At: 2026-08-06 02:05:18
145
WGUS71 KPHI 060705
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
305 AM EDT Thu Aug 6 2026
NJC019-035-060715-
/O.CAN.KPHI.FF.W.0105.000000T0000Z-260806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Somerset NJ-
305 AM EDT Thu Aug 6 2026
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHERN SOMERSET AND
NORTHEASTERN HUNTERDON COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
&&
LAT...LON 4079 7437 4078 7437 4077 7437 4072 7439
4073 7455 4075 7455 4076 7456 4074 7463
4075 7472 4084 7478 4097 7452 4090 7434
4087 7434 4087 7433 4080 7436
$$
NJC027-060745-
/O.CON.KPHI.FF.W.0105.000000T0000Z-260806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-
305 AM EDT Thu Aug 6 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM EDT EARLY THIS
MORNING FOR CENTRAL MORRIS COUNTY...
At 305 AM EDT, local law enforcement reported thunderstorms
producing heavy rain in Flooding on Route 46 east of NJ15 in Dover.
Flooding on I-80 Westbound at Exit 35. Between 1.5 and 2.5 inches of
rain have fallen. Flooding impacts will continue, but no additional
rainfall is expected. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement 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...
Morristown, Dover, Madison, Florham Park, East Hanover, Chatham,
Boonton, Wharton, Rockaway, Morris Plains, Mount Arlington and
Mendham.
This includes the following highways...
Interstate 287 in New Jersey between mile markers 31 and 46.
Interstate 80 in New Jersey between mile markers 29 and 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...dont 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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4079 7437 4078 7437 4077 7437 4072 7439
4073 7455 4075 7455 4076 7456 4074 7463
4075 7472 4084 7478 4097 7452 4090 7434
4087 7434 4087 7433 4080 7436
FLASH FLOOD...OBSERVED
$$
Staarmann
Action: Expired Issued At: 2026-08-06 02:46:19
379
WGUS71 KPHI 060745
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
345 AM EDT Thu Aug 6 2026
NJC027-060755-
/O.EXP.KPHI.FF.W.0105.000000T0000Z-260806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-
345 AM EDT Thu Aug 6 2026
...FLASH FLOOD WARNING HAS EXPIRED FOR CENTRAL MORRIS COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 4079 7437 4078 7437 4077 7437 4072 7439
4073 7455 4075 7455 4076 7456 4074 7463
4075 7472 4084 7478 4097 7452 4090 7434
4087 7434 4087 7433 4080 7436
$$
Staarmann
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