Severe Thunderstorm Warning 161, NWS Philadelphia/Mount Holly

Issued

Jul 8, 2025, 6:22 PM EDT (22:22 UTC)

Expired

Jul 8, 2025, 7:00 PM EDT

In force

38 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Hail

0.75 in

Wind

60.0 mph

Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Somerset County, NJ

The Philadelphia radar (KDIX), 36 km from the middle of the area, began a volume at 22:25 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

051 
WUUS51 KPHI 082222
SVRPHI
NJC021-023-025-035-082300-
/O.NEW.KPHI.SV.W.0161.250708T2222Z-250708T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
622 PM EDT Tue Jul 8 2025

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Mercer County in central New Jersey...
  South central Somerset County in northern New Jersey...
  Central Monmouth County in central New Jersey...
  Middlesex County in northern New Jersey...

* Until 700 PM EDT.

* At 621 PM EDT, a severe thunderstorm was located over
  Mercerville-Hamilton Square, or near Trenton, moving east at 35
  mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Trenton, New Brunswick, Old Bridge, East Brunswick, South
  Brunswick, Sayreville, North Brunswick, Marlboro, Manalapan, Ewing,
  Tinton Falls, Holmdel, Princeton, Matawan, Jamesburg, Hightstown,
  Cranbury, Pennington, Allentown, and Roosevelt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4015 7464 4018 7471 4017 7470 4015 7472
      4034 7480 4052 7436 4038 7412 4024 7410
TIME...MOT...LOC 2221Z 255DEG 32KT 4026 7468 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MJL

893 
WWUS51 KPHI 082249
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
649 PM EDT Tue Jul 8 2025

NJC021-023-025-035-082300-
/O.CON.KPHI.SV.W.0161.000000T0000Z-250708T2300Z/
Mercer NJ-Somerset NJ-Monmouth NJ-Middlesex NJ-
649 PM EDT Tue Jul 8 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR NORTHEASTERN MERCER...SOUTH CENTRAL SOMERSET...CENTRAL MONMOUTH
AND MIDDLESEX COUNTIES...

At 649 PM EDT, a severe thunderstorm was located over Yorketown, or
12 miles south of New Brunswick, moving east at 35 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
New Brunswick, Old Bridge, East Brunswick, South Brunswick,
Sayreville, North Brunswick, Marlboro, Manalapan, Tinton Falls,
Holmdel, Matawan, Jamesburg, Hightstown, Cranbury, Roosevelt, Rocky
Hill, Brownville, East Freehold, West Freehold, and Adelphia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4018 7448 4040 7465 4052 7436 4038 7412
      4024 7410
TIME...MOT...LOC 2249Z 255DEG 32KT 4032 7436 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MJL

975 
WWUS51 KPHI 082300
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
700 PM EDT Tue Jul 8 2025

NJC021-023-025-035-082310-
/O.EXP.KPHI.SV.W.0161.000000T0000Z-250708T2300Z/
Mercer NJ-Somerset NJ-Monmouth NJ-Middlesex NJ-
700 PM EDT Tue Jul 8 2025

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MERCER...SOUTH
CENTRAL SOMERSET...CENTRAL MONMOUTH AND MIDDLESEX COUNTIES HAS
EXPIRED...

The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.  However gusty
winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central and northern New Jersey.

Remember, a Severe Thunderstorm Warning still remains in effect for
Southern Middlesex County and Northern Monmouth County in New Jersey.

LAT...LON 4018 7448 4040 7465 4052 7436 4038 7412
      4024 7410
TIME...MOT...LOC 2300Z 255DEG 32KT 4034 7424 

$$

MJL

Severe Thunderstorm Warnings in New Jersey, 2025Every severe thunderstorm warning in 2025

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.