A cold front moved through the Great Lakes region on June 21, while Tropical Storm Claudette passed offshore of New Jersey and the Delmarva region. Ahead of the cold front, a hot, humid, and unstable air mass developed in the mid-Atlantic. A pre-frontal trough then served as a focus for widespread convection across the Northeast and mid-Atlantic during the afternoon and evening hours. With the strong instability and good forcing, much of the convection became strong to severe, taking the form of both linear and semi-discrete activity. Damaging winds were by far the primary hazard with these storms, with numerous reports of downed trees and power lines across the region. Convection weakened as it approached the coast owing to loss of daytime heating, weakening shear, and large scale subsidence on the northwest flank of Claudette.

Thunderstorm Wind in SUSSEX, NEW JERSEY
From 21-JUN-21 19:40:00 to 21-JUN-21 19:40:00 (EST-5)
Location: YELLOW FRAME
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

A tree was downed on Yellow Frame Rd. Time estimated from radar.

Thunderstorm Wind in SALEM, NEW JERSEY
From 21-JUN-21 18:27:00 to 21-JUN-21 18:27:00 (EST-5)
Location: DEEPWATER
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree was downed on I-295 northbound near Exit 1. Several reports of power lines down in this area as well. Time estimated from radar.

Thunderstorm Wind in WARREN, NEW JERSEY
From 21-JUN-21 19:32:00 to 21-JUN-21 19:32:00 (EST-5)
Location: VAILS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

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

Thunderstorm Wind in WARREN, NEW JERSEY
From 21-JUN-21 19:27:00 to 21-JUN-21 19:27:00 (EST-5)
Location: KNOWLTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Locust Lake Rd. Time estimated from radar.

Thunderstorm Wind in WARREN, NEW JERSEY
From 21-JUN-21 19:22:00 to 21-JUN-21 19:22:00 (EST-5)
Location: DELAWARE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

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

Thunderstorm Wind in SUSSEX, NEW JERSEY
From 21-JUN-21 19:47:00 to 21-JUN-21 19:47:00 (EST-5)
Location: BEEMERVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

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

Thunderstorm Wind in CAMDEN, NEW JERSEY
From 21-JUN-21 18:50:00 to 21-JUN-21 18:50:00 (EST-5)
Location: CHEWS
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A personal weather station measured a 61 kt with gust. The actual value of the gust is estimated to be slightly lower. Time estimated.

Thunderstorm Wind in SUSSEX, NEW JERSEY
From 21-JUN-21 19:37:00 to 21-JUN-21 19:37:00 (EST-5)
Location: HAINESVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Power lines were downed near Flatbrook Rd. Time estimated from radar.

Thunderstorm Wind in SALEM, NEW JERSEY
From 21-JUN-21 18:20:00 to 21-JUN-21 18:20:00 (EST-5)
Location: DEEPWATER
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was reported down on a house. Time estimated from radar.

Thunderstorm Wind in SUSSEX, NEW JERSEY
From 21-JUN-21 19:45:00 to 21-JUN-21 19:45:00 (EST-5)
Location: HALSEY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

A tree and wires were downed. Time estimated from radar.

Thunderstorm Wind in SALEM, NEW JERSEY
From 21-JUN-21 18:30:00 to 21-JUN-21 18:30:00 (EST-5)
Location: WOODSTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A medium-sized tree was downed at the intersection of Auburn Rd and Sharptown-Auburn Rd. Time estimated from radar.

Thunderstorm Wind in SUSSEX, NEW JERSEY
From 21-JUN-21 19:40:00 to 21-JUN-21 19:40:00 (EST-5)
Location: FREDON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

A tree and wires were downed on Phil Hardin Rd. Time estimated from radar.

Thunderstorm Wind in SUSSEX, NEW JERSEY
From 21-JUN-21 19:45:00 to 21-JUN-21 19:45:00 (EST-5)
Location: NEWTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Newton Swartswood Rd. Time estimated from radar.