A slow moving frontal boundary was draped across upstate New York and southern New England on July 22 with multiple waves of low pressure tracking along it. The mid-Atlantic was left in a warm sector air mass south of this front. This led to a very hot and humid day on July 22 with air temperatures rising into the 90s and dew point values near 70. This caused strong instability to develop. Shear values were not overly impressive, but an approaching shortwave disturbance from the Midwest did help to increase shear late in the day. This disturbance also served as forcing for convection to develop in the warm and unstable air mass. Widespread thunderstorm development occurred, with storms eventually developing into a mostly solid squall line. This line of storms produced numerous reports of wind damage across eastern Pennsylvania, New Jersey, and Delmarva.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 22-JUL-20 16:01:00 to 22-JUL-20 16:01:00 (EST-5)
Location: ST PETERS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near Hopewell Rd near the border of Berks and Chester Counties. Time estimated from radar.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 22-JUL-20 16:01:00 to 22-JUL-20 16:01:00 (EST-5)
Location: GUTH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Lapp Rd in Stetlersville. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 16:06:00 to 22-JUL-20 16:06:00 (EST-5)
Location: SHOENERSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near Clover St in North Catasauqua. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 16:08:00 to 22-JUL-20 16:08:00 (EST-5)
Location: BUSHKILL CENTER
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Several reports of downed trees and wires south of Wind Gap. Time estimated from radar.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 22-JUL-20 16:11:00 to 22-JUL-20 16:11:00 (EST-5)
Location: EMMAUS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near Walnut St in Emmaus. Time estimated from radar.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 22-JUL-20 16:11:00 to 22-JUL-20 16:11:00 (EST-5)
Location: ALLENTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near Court St in Allentown. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 16:11:00 to 22-JUL-20 16:11:00 (EST-5)
Location: NAZARETH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near Center St in Nazareth. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 16:13:00 to 22-JUL-20 16:13:00 (EST-5)
Location: BELFAST
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Bangor Rd in Plainfield Twp. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 16:16:00 to 22-JUL-20 16:16:00 (EST-5)
Location: KEPLERS MILL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near Northwood Ave in Easton. Time estimated from radar.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 22-JUL-20 16:21:00 to 22-JUL-20 16:21:00 (EST-5)
Location: FRAZIER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A utility was downed on US-30 near Planebrook Rd. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 16:21:00 to 22-JUL-20 16:21:00 (EST-5)
Location: STIER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near Heiden Rd in Mount Bethel. Time estimated from radar.

Thunderstorm Wind in CHESTER, PENNSYLVANIA
From 22-JUL-20 16:22:00 to 22-JUL-20 16:22:00 (EST-5)
Location: HARMONY HILL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree and wires were downed on Valley Creek Rd at Harmony Hill Rd. Time estimated from radar.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 22-JUL-20 16:22:00 to 22-JUL-20 16:22:00 (EST-5)
Location: COLLEGEVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Tree or wires down on College Ave at 3rd Ave. Time estimated from radar.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 22-JUL-20 16:25:00 to 22-JUL-20 16:25:00 (EST-5)
Location: ARGUS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Schukraft Rd in West Rockhill Twp. Time estimated from radar.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 22-JUL-20 16:25:00 to 22-JUL-20 16:25:00 (EST-5)
Location: LANSDALE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near Leon Dr in Hatfield. Time estimated from radar.

Hail in MONROE, PENNSYLVANIA
From 22-JUL-20 13:13:00 to 22-JUL-20 13:13:00 (EST-5)
Location: TANNERSVILLE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Social media photo of at least ping pong ball size hail in Tannersville. Time estimated from radar.

Hail in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 16:00:00 to 22-JUL-20 16:00:00 (EST-5)
Location: COPELLA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dime to penny size hail was reported, along with a measured wind gust of 50 mph.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 22-JUL-20 16:28:00 to 22-JUL-20 16:28:00 (EST-5)
Location: SELLERSVILLE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Several reports of downed wires between White Horse and Perkasie. Time estimated from radar.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 22-JUL-20 16:32:00 to 22-JUL-20 16:32:00 (EST-5)
Location: CHALFONT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An 8 inch diameter maple branch snapped off of a tree in Chalfont.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 22-JUL-20 16:34:00 to 22-JUL-20 16:34:00 (EST-5)
Location: WEISEL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Downed tree limbs and wires were reported near Mountain View Dr near Quakertown. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 13:11:00 to 22-JUL-20 13:11:00 (EST-5)
Location: EFFORT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree was downed on Route 115 at Brookmont Dr. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 13:16:00 to 22-JUL-20 13:16:00 (EST-5)
Location: TANNERSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Two trees were downed and blocked Sullivan Trail by Barkley Creek. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 13:17:00 to 22-JUL-20 13:17:00 (EST-5)
Location: TANNERSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Scotrun Ave. Time estimated from radar.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 22-JUL-20 16:37:00 to 22-JUL-20 16:37:00 (EST-5)
Location: MONTGOMERYVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree or wires were downed on McLaughlin Rd at Country Club Dr near the Pinecrest Golf Club. Time estimated from radar.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 22-JUL-20 16:54:00 to 22-JUL-20 16:54:00 (EST-5)
Location: ORELAND
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree or wires were downed on W Pennsylvania Ave. Time estimated from radar.

Thunderstorm Wind in BUCKS, PENNSYLVANIA
From 22-JUL-20 16:57:00 to 22-JUL-20 16:57:00 (EST-5)
Location: JAMISON
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Several reports of downed wires were received from the Jamison area. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 13:17:00 to 22-JUL-20 13:17:00 (EST-5)
Location: SCOT RUN
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Several trees and wires were downed on Camelback Rd. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 13:18:00 to 22-JUL-20 13:18:00 (EST-5)
Location: TANNERSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A downed tree blocked Scotrun Ave. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 13:24:00 to 22-JUL-20 13:24:00 (EST-5)
Location: EAST STROUDSBURG ARP
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree was downed in the roadway on Cherry Lane Rd at Birchwood Rd. Time estimated from radar.

Thunderstorm Wind in PHILADELPHIA, PENNSYLVANIA
From 22-JUL-20 17:02:00 to 22-JUL-20 17:02:00 (EST-5)
Location: OVERBROOK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree was downed near the I-76 and Montgomery Dr interchange. Time estimated from radar.

Thunderstorm Wind in MONTGOMERY, PENNSYLVANIA
From 22-JUL-20 17:11:00 to 22-JUL-20 17:11:00 (EST-5)
Location: HOLLYWOOD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree or wires was downed on Moredon Rd at Old Ford Rd. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 13:25:00 to 22-JUL-20 13:25:00 (EST-5)
Location: ANALOMINK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A downed tree blocked Paradise Trail by Penn Hills. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 13:29:00 to 22-JUL-20 13:29:00 (EST-5)
Location: POCONO ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree fell onto wires on Schoolhouse Rd. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 13:30:00 to 22-JUL-20 13:30:00 (EST-5)
Location: POCONO ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree fell onto a vehicle on Brush Dr. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:01:00 to 22-JUL-20 15:01:00 (EST-5)
Location: STOUCHSBURG
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Several reports of trees and wires down in Stouchsburg. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:03:00 to 22-JUL-20 15:03:00 (EST-5)
Location: CHARMING FORGE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Several reports of trees and wires down in the Host and North Heidelberg areas. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:17:00 to 22-JUL-20 15:17:00 (EST-5)
Location: WEST HAMBURG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed near State St in West Hamburg. Time estimated from radar.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 22-JUL-20 15:26:00 to 22-JUL-20 15:26:00 (EST-5)
Location: JACKSONVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree was downed on Route 863 near Kistler Valley Rd. Time estimated from radar.

Thunderstorm Wind in CARBON, PENNSYLVANIA
From 22-JUL-20 15:28:00 to 22-JUL-20 15:28:00 (EST-5)
Location: GERMANS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Bake Oven Rd in East Penn Twp. Time estimated from radar.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 22-JUL-20 15:29:00 to 22-JUL-20 15:29:00 (EST-5)
Location: NEWSIDE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Swamp Hollow Rd in Washington Twp. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:30:00 to 22-JUL-20 15:30:00 (EST-5)
Location: MOSELEM
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree was downed on Moselem Springs Rd. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:32:00 to 22-JUL-20 15:32:00 (EST-5)
Location: MOHNTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed on Wyomissing Ave in Mohnton. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:33:00 to 22-JUL-20 15:33:00 (EST-5)
Location: ESTERLY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree was downed into wires on Hollywood Dr. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:34:00 to 22-JUL-20 15:34:00 (EST-5)
Location: ANGELICA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed on Ledge Rock Rd east of Mohnton. Time estimated from radar.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 22-JUL-20 15:49:00 to 22-JUL-20 15:49:00 (EST-5)
Location: SEIPSTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wires were downed on Seipstown Rd in Seipstown. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:51:00 to 22-JUL-20 15:51:00 (EST-5)
Location: MONOCACY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree was downed on Shed Rd in Union Twp. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:51:00 to 22-JUL-20 15:51:00 (EST-5)
Location: SHANESVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near West Philadelphia Ave in Earl Twp. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 15:51:00 to 22-JUL-20 15:51:00 (EST-5)
Location: MOORESTOWN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Several reports were received of trees and wires down west of Belfast in the Bushkill Two area. Numerous power outages and a few road closures were reported. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 15:51:00 to 22-JUL-20 15:51:00 (EST-5)
Location: CLEARFIELD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Bushkill Dr in Bushkill Twp. Time estimated from radar.

Thunderstorm Wind in NORTHAMPTON, PENNSYLVANIA
From 22-JUL-20 15:51:00 to 22-JUL-20 15:51:00 (EST-5)
Location: DELPS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Wabasso Ave in Delps. Time estimated from radar.

Thunderstorm Wind in BERKS, PENNSYLVANIA
From 22-JUL-20 15:53:00 to 22-JUL-20 15:53:00 (EST-5)
Location: PASSMORE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree was downed onto wires with a transformer blown on Anthony's Mill Rd. Time estimated from radar.

Thunderstorm Wind in LEHIGH, PENNSYLVANIA
From 22-JUL-20 15:54:00 to 22-JUL-20 15:54:00 (EST-5)
Location: TREXLERTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

A tree and wires were downed near Arrowhead Ln near Breinigsville. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 15:54:00 to 22-JUL-20 15:54:00 (EST-5)
Location: BRODHEADSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Gould Rd in Brodheadsville. Time estimated from radar.

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 15:56:00 to 22-JUL-20 15:56:00 (EST-5)
Location: KUNKLETOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

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

Thunderstorm Wind in MONROE, PENNSYLVANIA
From 22-JUL-20 15:59:00 to 22-JUL-20 15:59:00 (EST-5)
Location: SAYLORSBURG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and wires were downed near Saylorsburg. Time estimated from radar.