Alert archive / New Jersey / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 281, NWS Philadelphia/Mount Holly

August 7, 20267 counties in New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 7, 2026, 4:50 PM EDT for 7 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 55 min. 10 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 7, 2026, 4:50 PM EDT (20:50 UTC)
Expired
Aug 7, 2026, 5:45 PM EDT
In force
55 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 91 km from the middle of the area, began a volume at 20:51 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

TimeReportWhereRemark
Aug 7, 5:16 PM EDTTSTM WND GST 473 Nw Bridgewater, NJASOS station KSMQ Somerville.
Aug 7, 5:19 PM EDTTSTM WND DMGGreen Brook Twp, NJMultiple reports of trees down. Time estimated from radar.
Aug 7, 5:20 PM EDTTSTM WND DMGSomerville, NJTrees down. Time estimated from radar.
Aug 7, 5:22 PM EDTTSTM WND DMG1 Nw Rocky Hill, NJTree into a house. Time estimated from radar.
Aug 7, 5:22 PM EDTTSTM WND DMGDunellen, NJTree into a building causing minor damage to the structure. Time estimated from radar.
Aug 7, 5:25 PM EDTTSTM WND DMGSouth Plainfield, NJTree down. Time estimated from radar.
Aug 7, 5:26 PM EDTTSTM WND DMGChatham, NJSome trees down. Time estimated from radar.
Aug 7, 5:29 PM EDTTSTM WND DMGHillsborough Twp, NJTrees down. Time estimated from radar.
Aug 7, 5:30 PM EDTTSTM WND DMGSouth Plainfield, NJTrees and wires down. Time estimated from radar.
Aug 7, 5:45 PM EDTTSTM WND DMGEdison, NJTrees and wires down. Time estimated from radar.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 7, 1:22 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.8 hours before the alert went out and 135 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.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2026-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2423 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2026-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2423 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
685 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted.

384 
WUUS51 KPHI 072050
SVRPHI
NJC019-021-023-025-027-035-037-PAC017-072145-
/O.NEW.KPHI.SV.W.0281.260807T2050Z-260807T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
450 PM EDT Fri Aug 7 2026

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Eastern Hunterdon County in northwestern New Jersey...
  Morris County in northern New Jersey...
  Southeastern Sussex County in northwestern New Jersey...
  Northwestern Mercer County in central New Jersey...
  Somerset County in northern New Jersey...
  North central Monmouth County in central New Jersey...
  Middlesex County in northern New Jersey...
  Central Bucks County in southeastern Pennsylvania...

* Until 545 PM EDT.

* At 450 PM EDT, severe thunderstorms were located along a line
  extending from near Newton to Long Valley to near Lebanon to
  Gardenville, moving east at 30 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  New Brunswick, Perth Amboy, Morristown, Somerville, Newton,
  Somerset, Edison, Old Bridge, East Brunswick, Bridgewater, South
  Brunswick, Sayreville, North Brunswick, Carteret, Dover, Madison,
  Hopatcong, Middlesex, Princeton, and Florham Park.

This includes the following highways...
 New Jersey Turnpike between exits 9 and 12.
 Interstate 78 in New Jersey between mile markers 19 and 42.
 Interstate 80 in New Jersey between mile markers 23 and 47.
 Interstate 287 in New Jersey between mile markers 0 and 54.
 Garden State Parkway between mile markers 119 and 133.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4043 7420 4035 7431 4034 7520 4057 7491
      4091 7477 4110 7473 4111 7447 4110 7449
      4104 7450 4105 7445 4102 7443 4100 7430
      4090 7427 4091 7434 4075 7436 4067 7446
      4065 7441 4060 7446 4059 7421 4050 7428
TIME...MOT...LOC 2050Z 249DEG 25KT 4109 7475 4080 7477 4061 7484 4035
7512

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Gorse
2 follow-up statements
145 
WWUS51 KPHI 072109
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
509 PM EDT Fri Aug 7 2026

NJC019-021-023-025-027-035-037-PAC017-072145-
/O.CON.KPHI.SV.W.0281.000000T0000Z-260807T2145Z/
Hunterdon NJ-Morris NJ-Sussex NJ-Mercer NJ-Somerset NJ-Monmouth NJ-
Middlesex NJ-Bucks PA-
509 PM EDT Fri Aug 7 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR EASTERN HUNTERDON...MORRIS...SOUTHEASTERN SUSSEX...NORTHWESTERN
MERCER...SOMERSET...NORTH CENTRAL MONMOUTH...MIDDLESEX AND CENTRAL
BUCKS COUNTIES...

At 508 PM EDT, severe thunderstorms were located along a line
extending from near Ogdensburg to Chester to near White House Station
to near New Hope, moving east at 30 mph.

HAZARD...60 mph wind gusts and penny size hail. This line of storms 
         has a history of producing tree damage.

SOURCE...Law enforcement.

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

Locations impacted include...
New Brunswick, Perth Amboy, Morristown, Somerville, Newton, Somerset,
Edison, Old Bridge, East Brunswick, Bridgewater, South Brunswick,
Sayreville, North Brunswick, Carteret, Dover, Madison, Hopatcong,
Middlesex, Princeton, and Florham Park.

This includes the following highways...
 New Jersey Turnpike between exits 9 and 12.
 Interstate 78 in New Jersey between mile markers 19 and 42.
 Interstate 80 in New Jersey between mile markers 23 and 47.
 Interstate 287 in New Jersey between mile markers 0 and 54.
 Garden State Parkway between mile markers 119 and 133.

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 these storms.
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.

&&

LAT...LON 4043 7420 4035 7431 4034 7520 4057 7491
      4091 7477 4110 7473 4111 7447 4110 7449
      4104 7450 4105 7445 4102 7443 4100 7430
      4090 7427 4091 7434 4075 7436 4067 7446
      4065 7441 4060 7446 4059 7421 4050 7428
TIME...MOT...LOC 2108Z 249DEG 24KT 4107 7465 4078 7467 4059 7474 4033
7502

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

$$

Gorse
617 
WWUS51 KPHI 072132
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
532 PM EDT Fri Aug 7 2026

NJC019-PAC017-072142-
/O.CAN.KPHI.SV.W.0281.000000T0000Z-260807T2145Z/
Hunterdon NJ-Bucks PA-
532 PM EDT Fri Aug 7 2026

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HUNTERDON AND CENTRAL
BUCKS COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

LAT...LON 4043 7420 4035 7431 4035 7474 4048 7466
      4073 7460 4110 7457 4111 7447 4110 7449
      4104 7450 4105 7445 4102 7443 4100 7430
      4090 7427 4091 7434 4075 7436 4067 7446
      4065 7441 4060 7446 4059 7421 4050 7428
TIME...MOT...LOC 2132Z 253DEG 26KT 4100 7433 4071 7435 4052 7442 4026
7470

$$

NJC021-023-025-027-035-037-072145-
/O.CON.KPHI.SV.W.0281.000000T0000Z-260807T2145Z/
Morris NJ-Sussex NJ-Mercer NJ-Somerset NJ-Monmouth NJ-Middlesex NJ-
532 PM EDT Fri Aug 7 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR MORRIS...SOUTHEASTERN SUSSEX...NORTH CENTRAL MERCER...CENTRAL
SOMERSET...NORTH CENTRAL MONMOUTH AND MIDDLESEX COUNTIES...

At 532 PM EDT, severe thunderstorms were located along a line
extending from Butler to Summit to near Society Hill to near
Mercerville-Hamilton Square, moving east at 30 mph.

HAZARD...60 mph wind gusts. This line of storms has a history of 
         producing wind damage.

SOURCE...Law enforcement.

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

Locations impacted include...
New Brunswick, Perth Amboy, Morristown, Somerville, Somerset, Edison,
Old Bridge, East Brunswick, South Brunswick, Sayreville, North
Brunswick, Carteret, Dover, Madison, Middlesex, Princeton, Florham
Park, East Hanover, Lincoln Park, and Bound Brook.

This includes the following highways...
 New Jersey Turnpike between exits 10 and 12.
 Interstate 78 in New Jersey between mile markers 33 and 42.
 Interstate 80 in New Jersey between mile markers 34 and 47.
 Interstate 287 in New Jersey between mile markers 0 and 18, and
between mile markers 25 and 54.
 Garden State Parkway between mile markers 119 and 133.

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 these storms.
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.

&&

LAT...LON 4043 7420 4035 7431 4035 7474 4048 7466
      4073 7460 4110 7457 4111 7447 4110 7449
      4104 7450 4105 7445 4102 7443 4100 7430
      4090 7427 4091 7434 4075 7436 4067 7446
      4065 7441 4060 7446 4059 7421 4050 7428
TIME...MOT...LOC 2132Z 253DEG 26KT 4100 7433 4071 7435 4052 7442 4026
7470

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Gorse

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 2:38 PM EDTSevere Thunderstorm WarningPHISussex50 min
Aug 7, 2:53 PM EDTSevere Thunderstorm WarningPHIWarren67 min
Aug 7, 3:16 PM EDTSevere Thunderstorm WarningPHIWarren44 min
Aug 7, 3:25 PM EDTSevere Thunderstorm WarningPHIWarren65 min
Aug 7, 4:06 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Sussex, Warren54 min
Aug 7, 4:24 PM EDTFlash Flood WarningPHISussex, Warren4 hr
Aug 7, 4:42 PM EDTSevere Thunderstorm WarningPHIMonmouth25 min
Aug 7, 4:43 PM EDTSpecial Marine WarningPHI48 min
Aug 7, 4:56 PM EDTFlash Flood WarningPHIHunterdon, Morris, Sussex, Warren3 hr
Aug 7, 5:01 PM EDTFlash Flood WarningPHIHunterdon, Warren3 hr
Aug 7, 5:01 PM EDTSevere Thunderstorm WarningPHIMercer44 min
Aug 7, 5:18 PM EDTFlash Flood WarningPHIHunterdon, Morris, Somerset, Sussex3 hr
Aug 7, 5:34 PM EDTFlash Flood WarningPHIBurlington, Mercer3 hr
Aug 7, 5:40 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean, Somerset50 min
Aug 7, 5:42 PM EDTFlash Flood WarningPHIMercer, Middlesex, Morris, Somerset3 hr
Aug 7, 5:45 PM EDTSpecial Marine WarningPHI60 min
Aug 7, 5:48 PM EDTSpecial Marine WarningPHI57 min
Aug 7, 6:37 PM EDTSpecial Marine WarningPHI53 min
Aug 7, 6:39 PM EDTFlash Flood WarningPHIMonmouth3 hr
Aug 7, 7:19 PM EDTAreal Flood WarningPHIWarren4 hr
Aug 7, 2:58 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh62 min
Aug 7, 3:25 PM EDTFlash Flood WarningPHIBerks3 hr
Aug 7, 3:37 PM EDTFlash Flood WarningPHIMonroe, Northampton3 hr
Aug 7, 4:04 PM EDTFlash Flood WarningPHIBerks, Carbon, Lehigh, Monroe, Northampton2 hr
Aug 7, 4:56 PM EDTSevere Thunderstorm WarningPHIChester, Delaware64 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2026Severe Thunderstorm Warnings in Pennsylvania, 2026Every severe thunderstorm 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.