A southward moving cold front stalled across northern New Jersey and northeast Pennsylvania early on September 13. Warm and humid conditions were present south of the front. An upper level disturbance moving through the westerly flow aloft helped to increase wind shear. Combined with the instability, this disturbance caused a line of thunderstorms to move through the region during the evening hours of September 13. This line of storms became severe, with a number of reports of damaging wind along it. The line moved offshore and out of the region later that evening.

Thunderstorm Wind in MORRIS, NEW JERSEY
From 13-SEP-21 20:47:00 to 13-SEP-21 20:47:00 (EST-5)
Location: BUDD LAKE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A pole and wires were downed on US-46 eastbound in the area of Mount Olive Rd. Time estimated from radar.

Thunderstorm Wind in MONMOUTH, NEW JERSEY
From 13-SEP-21 21:15:00 to 13-SEP-21 21:15:00 (EST-5)
Location: PORT MONMOUTH
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Measured at Port Monmouth CWOP site.

Thunderstorm Wind in MONMOUTH, NEW JERSEY
From 13-SEP-21 21:24:00 to 13-SEP-21 21:24:00 (EST-5)
Location: ATLANTIC HIGHLANDS
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Measured at Sandy Hook.

Thunderstorm Wind in MIDDLESEX, NEW JERSEY
From 13-SEP-21 20:54:00 to 13-SEP-21 20:54:00 (EST-5)
Location: EDISON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Wires were downed on US-1 northbound in Edison Twp near Old Post Rd north. Time estimated from radar.

Thunderstorm Wind in MIDDLESEX, NEW JERSEY
From 13-SEP-21 21:02:00 to 13-SEP-21 21:02:00 (EST-5)
Location: MILLTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several large tree limbs were snapped along a concentrated path along Ryders Ln in East Brunswick. Time estimated from radar.

Thunderstorm Wind in MONMOUTH, NEW JERSEY
From 13-SEP-21 21:15:00 to 13-SEP-21 21:15:00 (EST-5)
Location: ATLANTIC HIGHLANDS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs were downed along NJ-36.

Thunderstorm Wind in MIDDLESEX, NEW JERSEY
From 13-SEP-21 21:00:00 to 13-SEP-21 21:00:00 (EST-5)
Location: HOPELAWN
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree fell through the roof of a house in Hopelawn. Time estimated from radar.

Thunderstorm Wind in MONMOUTH, NEW JERSEY
From 13-SEP-21 21:14:00 to 13-SEP-21 21:14:00 (EST-5)
Location: NAVESINK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree was downed on NJ-36 southbound in Middletown Twp. Time estimated from radar.

Thunderstorm Wind in MONMOUTH, NEW JERSEY
From 13-SEP-21 21:10:00 to 13-SEP-21 21:10:00 (EST-5)
Location: UNION BEACH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A pole was downed on NJ-36 northbound at Stone Rd, closing all lanes. Time estimated from radar.

Thunderstorm Wind in MIDDLESEX, NEW JERSEY
From 13-SEP-21 21:02:00 to 13-SEP-21 21:02:00 (EST-5)
Location: JAMESBURG
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

North State Home Rd was closed between Spotswood Englishtown Rd and Spotswood Gravel Hill Rd due to trees and wires in the roadway. Time estimated from radar.

Thunderstorm Wind in MIDDLESEX, NEW JERSEY
From 13-SEP-21 21:02:00 to 13-SEP-21 21:02:00 (EST-5)
Location: PROSPECT PLAINS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Union Valley Half Acre Rd was closed between Union Valley Rd and Cranbury Half Acre Rd due to trees and wires in the roadway. Time estimated from radar.

Thunderstorm Wind in MIDDLESEX, NEW JERSEY
From 13-SEP-21 20:53:00 to 13-SEP-21 20:53:00 (EST-5)
Location: NORTH BRUNSWICK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Jones Ave was closed between Seaman St and Handy St due to a large tree down blocking the roadway. Time estimated from radar.

Thunderstorm Wind in SOMERSET, NEW JERSEY
From 13-SEP-21 20:27:00 to 13-SEP-21 20:27:00 (EST-5)
Location: LIBERTY CORNER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Valley Rd in Bernards Twp was closed between Lurline Dr and Essex Pl due to a tree and wires down. Time estimated from radar.

Thunderstorm Wind in MONMOUTH, NEW JERSEY
From 13-SEP-21 21:22:00 to 13-SEP-21 21:22:00 (EST-5)
Location: COLTS NECK ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

An mPing report of tree limbs down.

Thunderstorm Wind in MONMOUTH, NEW JERSEY
From 13-SEP-21 21:19:00 to 13-SEP-21 21:19:00 (EST-5)
Location: EAST KEANSBURG
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Measured at Keansburg Weatherflow station.