A strong cold front moved through the mid-Atlantic on July 21. Ahead of the front, an environment of moderate wind shear and seasonably warm and humid conditions promoted widespread thunderstorm development. Storms mainly took the form of multi-cell clusters and quasi-linear segments. A number of storms became severe, posing a threat for both damaging winds and, thanks to cold air aloft, large hail as they moved towards the coast. With the front moving through during the mid to late afternoon hours, most of the storm activity was offshore by early evening, with cooler and drier weather behind the front.

Hail in ATLANTIC, NEW JERSEY
From 21-JUL-21 15:20:00 to 21-JUL-21 15:20:00 (EST-5)
Location: OCEANVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OCEAN, NEW JERSEY
From 21-JUL-21 12:50:00 to 21-JUL-21 12:50:00 (EST-5)
Location: MANAHAWKIN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OCEAN, NEW JERSEY
From 21-JUL-21 12:15:00 to 21-JUL-21 12:15:00 (EST-5)
Location: MANAHAWKIN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OCEAN, NEW JERSEY
From 21-JUL-21 14:45:00 to 21-JUL-21 14:45:00 (EST-5)
Location: LAKEWOOD ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OCEAN, NEW JERSEY
From 21-JUL-21 13:05:00 to 21-JUL-21 13:05:00 (EST-5)
Location: MANAHAWKIN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GLOUCESTER, NEW JERSEY
From 21-JUL-21 15:00:00 to 21-JUL-21 15:00:00 (EST-5)
Location: THOROFARE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OCEAN, NEW JERSEY
From 21-JUL-21 14:20:00 to 21-JUL-21 14:20:00 (EST-5)
Location: LAKEHURST
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 21-JUL-21 14:50:00 to 21-JUL-21 14:50:00 (EST-5)
Location: NEW ALBANY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree limbs were downed and blocked Bridgeboro Rd near the Westfield Rd intersection in Moorestown. Time estimated from radar.

Thunderstorm Wind in CAMDEN, NEW JERSEY
From 21-JUL-21 14:05:00 to 21-JUL-21 14:05:00 (EST-5)
Location: GLOUCESTER HGTS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree limb downed on a fence in Audubon. Report via social media with a photo. Time estimated from radar.

Hail in CAMDEN, NEW JERSEY
From 21-JUL-21 14:20:00 to 21-JUL-21 14:20:00 (EST-5)
Location: CHEWS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in CAPE MAY, NEW JERSEY
From 21-JUL-21 16:32:00 to 21-JUL-21 16:32:00 (EST-5)
Location: ERMA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was downed on Cape Rd in Lower Twp. Time estimated from radar.

Thunderstorm Wind in CAPE MAY, NEW JERSEY
From 21-JUL-21 16:39:00 to 21-JUL-21 16:39:00 (EST-5)
Location: CAPE MAY NAS
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Measured at Cape May Harbor.

Thunderstorm Wind in BURLINGTON, NEW JERSEY
From 21-JUL-21 14:51:00 to 21-JUL-21 14:51:00 (EST-5)
Location: DELANCO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wires were downed in Delanco near the border with Riverside Twp and the Rancocas Creek. Time estimated from radar.

Thunderstorm Wind in OCEAN, NEW JERSEY
From 21-JUL-21 15:00:00 to 21-JUL-21 15:00:00 (EST-5)
Location: RIVIERA BEACH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wires were downed on a road in Herbertsville. Report via social media with a photo. Time estimated from radar.

Thunderstorm Wind in CAPE MAY, NEW JERSEY
From 21-JUL-21 16:36:00 to 21-JUL-21 16:36:00 (EST-5)
Location: WILDWOOD CREST
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A telephone pole snapped in half on W Preston Ave. Report via social media with a photo. Time estimated from radar.

Hail in OCEAN, NEW JERSEY
From 21-JUL-21 12:05:00 to 21-JUL-21 12:05:00 (EST-5)
Location: MANAHAWKIN ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in CAMDEN, NEW JERSEY
From 21-JUL-21 14:20:00 to 21-JUL-21 14:20:00 (EST-5)
Location: ASHLAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Fell at Laurel Springs.

Hail in MONMOUTH, NEW JERSEY
From 21-JUL-21 15:00:00 to 21-JUL-21 15:00:00 (EST-5)
Location: ALLENWOOD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CAMDEN, NEW JERSEY
From 21-JUL-21 12:05:00 to 21-JUL-21 12:05:00 (EST-5)
Location: SOMERDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS