Tropical Storm Elsa approached the mid-Atlantic states from the south on July 8. Downstream of Elsa, a warm and moist environment was present. A slow moving frontal boundary also resided over northern New Jersey, northern Pennsylvania, and into New York. This frontal system provided forcing for convective development over the mid-Atlantic, in fairly close proximity but unrelated to Tropical Storm Elsa. With strong instability and weak to moderate wind shear, some of the storms became severe as they organized into linear and multi-cellular clusters. Deep layer southerly flow in advance of Elsa caused storms to move northward as opposed to a more typical eastward motion. Damaging wind was the main hazard associated with these storms, with several strong downbursts noted. Storm activity eventually weakened and moved north of the region by evening as Elsa moved in.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 08-JUL-21 17:12:00 to 08-JUL-21 17:12:00 (EST-5)
Location: NEW BRITAIN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A video showed multiple large trees down on power lines along Almshouse Rd in Doylestown. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 08-JUL-21 16:47:00 to 08-JUL-21 16:47:00 (EST-5)
Location: MT PLEASANT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree was downed onto wires on Bernville Rd. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 08-JUL-21 16:21:00 to 08-JUL-21 16:21:00 (EST-5)
Location: HELLERTOWN
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was downed onto a house on Cedar Rd. No injuries occurred but the home was rendered uninhabitable. Time estimated from radar and emergency management reports.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 08-JUL-21 16:50:00 to 08-JUL-21 16:50:00 (EST-5)
Location: PHILADELPHIA WINGS F
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A downed tree blocked Gawain Rd at Camelot Dr. Time estimated from radar.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 08-JUL-21 16:47:00 to 08-JUL-21 16:47:00 (EST-5)
Location: CONSHOHOCKEN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A downed tree blocked Wood St at 12th Ave. Time estimated from radar.

Lightning in CARBON, PENNSYLVANIA
From 08-JUL-21 08:35:00 to 08-JUL-21 08:35:00 (EST-5)
Location: CHRISTMANS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A house was struck by lightning on Indian Trail with smoke reported in the house. This occurred from a morning round of sub-severe convection which preceded severe thunderstorms later in the day. Time estimated from dispatch report.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 08-JUL-21 16:47:00 to 08-JUL-21 16:47:00 (EST-5)
Location: COLONIAL VLG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree and wires were downed on Seaton Ross Rd at Ivywood Ln. Time estimated from radar.

Hail in LEHIGH, PENNSYLVANIA
From 08-JUL-21 15:58:00 to 08-JUL-21 15:58:00 (EST-5)
Location: DILLINGER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported south of Allentown. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 08-JUL-21 15:40:00 to 08-JUL-21 15:40:00 (EST-5)
Location: BARTO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Trees were downed in Washington Twp. Time estimated from radar.

Funnel Cloud in DELAWARE, PENNSYLVANIA
From 08-JUL-21 16:45:00 to 08-JUL-21 16:45:00 (EST-5)
Location: ITHAN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A social media photo showed a very small, thin funnel cloud near Wayne. It extended less than a quarter way to the ground. Significant damage was reported in the Wayne area but was all due to downburst activity. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 08-JUL-21 15:06:00 to 08-JUL-21 15:06:00 (EST-5)
Location: SCARLETS MILL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trees were downed in Robeson Twp. Time estimated from radar.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 08-JUL-21 16:43:00 to 08-JUL-21 16:43:00 (EST-5)
Location: WAYNE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree and wires were downed on Poplar Ave. Time estimated from radar.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 08-JUL-21 16:09:00 to 08-JUL-21 16:09:00 (EST-5)
Location: CENTER VLY
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Numerous 911 calls were received for downed trees in Upper Saucon. Based on radar, a strong downburst likely occurred in the area. Time estimated from radar.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 08-JUL-21 16:50:00 to 08-JUL-21 16:50:00 (EST-5)
Location: IVY ROCK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A downed tree partially blocked Avignon Dr at Club House Rd. Time estimated from radar.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 08-JUL-21 16:38:00 to 08-JUL-21 16:38:00 (EST-5)
Location: WYNNEWOOD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Downed tree limbs blocked Cedar Grove Rd. Time estimated from radar.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 08-JUL-21 16:56:00 to 08-JUL-21 16:56:00 (EST-5)
Location: PHILADELPHIA WINGS F
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree down on wires blocked Jolly Rd at Beacon Hill Circle. Time estimated from radar.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 08-JUL-21 16:46:00 to 08-JUL-21 16:46:00 (EST-5)
Location: ITHAN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree and wires were downed on Iven Ave. Time estimated from radar.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 08-JUL-21 16:40:00 to 08-JUL-21 16:40:00 (EST-5)
Location: EAST LANSDOWNE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

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

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 08-JUL-21 16:45:00 to 08-JUL-21 16:45:00 (EST-5)
Location: STRAFFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wires were downed on Deepdale Rd, blocking the road. Time estimated from radar.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 08-JUL-21 16:44:00 to 08-JUL-21 16:44:00 (EST-5)
Location: ITHAN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

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

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 08-JUL-21 16:35:00 to 08-JUL-21 16:35:00 (EST-5)
Location: SADSBURYVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree was downed on Ash Rd at Airport Rd. Time estimated from radar.

Thunderstorm Wind in DELAWARE, PENNSYLVANIA
From 08-JUL-21 16:28:00 to 08-JUL-21 16:28:00 (EST-5)
Location: GLEN RIDDLE LIMA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Downed trees blocked Hollow Rd. Time estimated from radar.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 08-JUL-21 15:55:00 to 08-JUL-21 15:55:00 (EST-5)
Location: OLD ZIONSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wires were downed in Upper Milford Twp. Time estimated from radar.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 08-JUL-21 17:10:00 to 08-JUL-21 17:10:00 (EST-5)
Location: CROSS KEYS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tree limbs and wires were downed in Doylestown.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 08-JUL-21 17:07:00 to 08-JUL-21 17:07:00 (EST-5)
Location: NORTH WALES
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A downed tree blocked E Prospect Ave at 10th St. Time estimated from radar.