A warm front was draped across northern Pennsylvania and far northern New Jersey on July 12. South of the front, a very warm and unstable air mass was present. An approaching trough also helped spur the development of a weak wave of low pressure, which tracked along the front during the afternoon and evening hours. This helped add some forcing and shear to an already unstable air mass. The result was scattered to widespread thunderstorm development along and south of the front during the peak heating hours. Some of the storms became severe, with a number of instances of damaging wind across the region. This event was also better known for producing prolific flash flooding near the Delaware River just northeast of Philadelphia, along the Pennsylvania and New Jersey border. Storm coverage gradually decreased in the evening hours as heating and forcing were lost.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 16:35:00 to 12-JUL-21 16:35:00 (EST-5)
Location: WILLINGBORO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Tree limbs and wires were downed near New Castle Ln. Time estimated from radar.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 14:16:00 to 12-JUL-21 14:16:00 (EST-5)
Location: COLUMBUS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Wires were downed near Millenium Dr. Time estimated from radar.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 17:12:00 to 12-JUL-21 17:12:00 (EST-5)
Location: FELLOWSHIP
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Wires were downed near Springhouse Ln. Time estimated from radar.

Thunderstorm Wind in OCEAN, NEW JERSEY
From 12-JUL-21 15:55:00 to 12-JUL-21 15:55:00 (EST-5)
Location: BRICK TOWN
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Several trees were downed in Brick Twp. Time estimated from radar.

Thunderstorm Wind in MORRIS, NEW JERSEY
From 12-JUL-21 17:17:00 to 12-JUL-21 17:17:00 (EST-5)
Location: GREEN POND JCT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Green Pond Rd. Time estimated from radar.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 16:40:00 to 12-JUL-21 16:40:00 (EST-5)
Location: JACKSONVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near Warner Rd. Time estimated from radar.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 16:18:00 to 12-JUL-21 16:18:00 (EST-5)
Location: BEVERLY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wires were downed on Lincoln Ave. Time estimated from radar and scanner report.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 16:29:00 to 12-JUL-21 16:29:00 (EST-5)
Location: ROEBLING
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wires were downed on Hamilton Ave. Time estimated from radar.

Thunderstorm Wind in CAMDEN, NEW JERSEY
From 12-JUL-21 17:46:00 to 12-JUL-21 17:46:00 (EST-5)
Location: COLLINGSWOOD
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Several reports of downed wires and power outages in the  Collingswood area. Time estimated from radar.

Thunderstorm Wind in OCEAN, NEW JERSEY
From 12-JUL-21 16:13:00 to 12-JUL-21 16:13:00 (EST-5)
Location: BARNEGAT PINES
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Brookdale Park Dr. Time estimated from radar.

Thunderstorm Wind in OCEAN, NEW JERSEY
From 12-JUL-21 15:45:00 to 12-JUL-21 15:45:00 (EST-5)
Location: PINE LAKE PARK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Power lines were downed near Oak Ave. Time estimated from radar.

Hail in OCEAN, NEW JERSEY
From 12-JUL-21 16:06:00 to 12-JUL-21 16:06:00 (EST-5)
Location: GILFORD PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MIDDLESEX, NEW JERSEY
From 12-JUL-21 14:23:00 to 12-JUL-21 14:23:00 (EST-5)
Location: JAMESBURG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wires were downed in Jamesburg. Time estimated from radar.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 14:13:00 to 12-JUL-21 14:13:00 (EST-5)
Location: FIELDSBORO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed in the Fieldsboro area and near Dunns Mill Rd. Time estimated from radar.

Thunderstorm Wind in MONMOUTH, NEW JERSEY
From 12-JUL-21 14:34:00 to 12-JUL-21 14:34:00 (EST-5)
Location: MARLBORO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Storm outflow damaged power lines near Wyncrest Rd. Time estimated from radar.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 14:15:00 to 12-JUL-21 14:15:00 (EST-5)
Location: FLORENCE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Scanner report of downed wires in Florence. Time estimated from radar and dispatch report.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 14:10:00 to 12-JUL-21 14:10:00 (EST-5)
Location: NEW ALBANY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wires were downed in Cinnaminson. Time estimated from radar and dispatch report.

Thunderstorm Wind in OCEAN, NEW JERSEY
From 12-JUL-21 15:56:00 to 12-JUL-21 15:56:00 (EST-5)
Location: BRICK TOWN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Numerous reports of downed wires in Brick Twp. Time estimated from radar and scanner reports.

Thunderstorm Wind in MIDDLESEX, NEW JERSEY
From 12-JUL-21 14:19:00 to 12-JUL-21 14:19:00 (EST-5)
Location: JAMESBURG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Multiple reports of downed wires and power outages in the Jamesburg area. Time estimated from radar.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 14:16:00 to 12-JUL-21 14:16:00 (EST-5)
Location: FIELDSBORO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wires were downed near Old York Rd. Time estimated from radar.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 12-JUL-21 17:09:00 to 12-JUL-21 17:09:00 (EST-5)
Location: FELLOWSHIP
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Wires were downed near Kings Hwy. Time estimated from radar.

Lightning in SUSSEX, NEW JERSEY
From 12-JUL-21 16:45:00 to 12-JUL-21 16:45:00 (EST-5)
Location: HIGHLAND LAKES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A scanner report of a lightning strike to a house with smoke, but no visible flames.

Thunderstorm Wind in OCEAN, NEW JERSEY
From 12-JUL-21 15:55:00 to 12-JUL-21 15:55:00 (EST-5)
Location: HOLIDAY CITY
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Numerous reports of downed wires between Lakewood and Toms River. Time estimated from radar and scanner reports.

Thunderstorm Wind in OCEAN, NEW JERSEY
From 12-JUL-21 15:52:00 to 12-JUL-21 15:52:00 (EST-5)
Location: GREENVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wires were downed on Ocean Ave in Lakewood. Time estimated from radar.

Thunderstorm Wind in MIDDLESEX, NEW JERSEY
From 12-JUL-21 14:32:00 to 12-JUL-21 14:32:00 (EST-5)
Location: SPOTSWOOD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

A couple reports of downed wires in the Spotswood area. Time estimated from radar.

Thunderstorm Wind in OCEAN, NEW JERSEY
From 12-JUL-21 15:45:00 to 12-JUL-21 15:45:00 (EST-5)
Location: GILFORD PARK
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Several reports of downed wires and power outages in the Island Heights area. Time estimated from radar.

Thunderstorm Wind in OCEAN, NEW JERSEY
From 12-JUL-21 16:00:00 to 12-JUL-21 16:00:00 (EST-5)
Location: BAY HEAD
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Several reports of downed wires in the Bay Head area. Time estimated from radar.

Thunderstorm Wind in SUSSEX, NEW JERSEY
From 12-JUL-21 17:44:00 to 12-JUL-21 17:44:00 (EST-5)
Location: LAKE MOHAWK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Springbrook Trail. Time estimated from radar.