Scattered thunderstorms developed in a moderate CAPE, moderate shear environment just south of a warm front that was draped from northwest to southeast across central Pennsylvania during the afternoon of July 11, 2021. Several of the storms produced wind damage, and a few storms exhibited rotation near the warm front.   One slower moving thunderstorm brought urban flash flooding to Harrisburg.

Thunderstorm Wind in SOMERSET, PENNSYLVANIA
From 11-JUL-21 16:45:00 to 11-JUL-21 16:45:00 (EST-5)
Location: JEROME
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm with winds estimated near 60 mph brought down numerous trees and wires across northern Somerset County in the vicinity of Jennerstown, Boswell and Jerome.

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 11-JUL-21 17:20:00 to 11-JUL-21 17:20:00 (EST-5)
Location: MILL RUN
Magnitude: 61.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm with winds estimated near 70 mph damaged a roof on a building in the 1800 block of Union Ave.

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 11-JUL-21 16:32:00 to 11-JUL-21 16:32:00 (EST-5)
Location: BELLWOOD
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees and wires in Bellwood.

Thunderstorm Wind in CLINTON, PENNSYLVANIA
From 11-JUL-21 17:24:00 to 11-JUL-21 17:24:00 (EST-5)
Location: HAMMERSLEY FORK
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down trees on wires near the intersection of Tamarack Rd and Kettle Creek Rd.

Thunderstorm Wind in CENTRE, PENNSYLVANIA
From 11-JUL-21 17:57:00 to 11-JUL-21 17:57:00 (EST-5)
Location: PINE GROVE MILLS
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm with winds estimated near 60 mph brought down a tree across the road near the intersection of S Nixon Rd and Pine Grove Rd.

Thunderstorm Wind in BEDFORD, PENNSYLVANIA
From 11-JUL-21 17:25:00 to 11-JUL-21 17:25:00 (EST-5)
Location: ALUM BANK
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees in the area.

Thunderstorm Wind in HUNTINGDON, PENNSYLVANIA
From 11-JUL-21 17:52:00 to 11-JUL-21 17:52:00 (EST-5)
Location: NEWBURG
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees near the Lake Raystown Resort.

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 11-JUL-21 17:30:00 to 11-JUL-21 17:30:00 (EST-5)
Location: TYRONE
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm with winds estimated near 60 mph brought down trees on wires.

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 11-JUL-21 17:38:00 to 11-JUL-21 17:38:00 (EST-5)
Location: VAIL
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm with winds estimated near 60 mph brought down trees on wires.

Thunderstorm Wind in CENTRE, PENNSYLVANIA
From 11-JUL-21 18:02:00 to 11-JUL-21 18:02:00 (EST-5)
Location: STATE COLLEGE
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down a tree on wires in the 400 block of Ridge Ave.

Thunderstorm Wind in MIFFLIN, PENNSYLVANIA
From 11-JUL-21 18:15:00 to 11-JUL-21 18:15:00 (EST-5)
Location: BELLEVILLE
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down a tree on wires across Maple Grove Rd.

Thunderstorm Wind in MIFFLIN, PENNSYLVANIA
From 11-JUL-21 18:35:00 to 11-JUL-21 18:35:00 (EST-5)
Location: LOCKE MILLS
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees on wires.

Thunderstorm Wind in CENTRE, PENNSYLVANIA
From 11-JUL-21 18:32:00 to 11-JUL-21 18:32:00 (EST-5)
Location: INGLEBY
Magnitude: 96.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm with winds estimated near 110 mph snapped and uprooted several trees with damage to six campsites and multiple vehicles.

Thunderstorm Wind in CENTRE, PENNSYLVANIA
From 11-JUL-21 18:38:00 to 11-JUL-21 18:38:00 (EST-5)
Location: COBURN
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees near the intersection of Broad Rd and Pine Creek Rd.

Thunderstorm Wind in CLINTON, PENNSYLVANIA
From 11-JUL-21 18:59:00 to 11-JUL-21 18:59:00 (EST-5)
Location: AVIS
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees in Avis.

Thunderstorm Wind in CLINTON, PENNSYLVANIA
From 11-JUL-21 18:38:00 to 11-JUL-21 18:38:00 (EST-5)
Location: MC ELHATTAN
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down several trees.

Thunderstorm Wind in UNION, PENNSYLVANIA
From 11-JUL-21 19:24:00 to 11-JUL-21 19:24:00 (EST-5)
Location: WINFIELD
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees and wires along Park Rd.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 11-JUL-21 19:37:00 to 11-JUL-21 19:37:00 (EST-5)
Location: NEWPORT
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees on wires.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 11-JUL-21 19:30:00 to 11-JUL-21 19:30:00 (EST-5)
Location: NEWPORT
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm with winds estimated near 60 mph brought down a tree on a van, trapping the family of nine in the van. There was one injury reported.

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 11-JUL-21 20:31:00 to 11-JUL-21 20:31:00 (EST-5)
Location: ROSSMOYNE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down a tree across Spanglers Mill Rd.

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 11-JUL-21 20:31:00 to 11-JUL-21 20:31:00 (EST-5)
Location: EBERLEYS MILL
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm with winds brought a measured wind gust of 63 mph.

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 11-JUL-21 20:03:00 to 11-JUL-21 20:03:00 (EST-5)
Location: CATAWISSA
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees and wires.

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 11-JUL-21 20:03:00 to 11-JUL-21 20:03:00 (EST-5)
Location: FERNVILLE
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees on wires.

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 11-JUL-21 21:20:00 to 11-JUL-21 21:20:00 (EST-5)
Location: TAMAQUA
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees.

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 11-JUL-21 16:20:00 to 11-JUL-21 16:20:00 (EST-5)
Location: GREENWOOD
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees in the 400 block of Pleasant Valley Blvd.

Thunderstorm Wind in BLAIR, PENNSYLVANIA
From 11-JUL-21 16:21:00 to 11-JUL-21 16:21:00 (EST-5)
Location: GREENWOOD
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees across the east end of Altoona.

Thunderstorm Wind in ELK, PENNSYLVANIA
From 11-JUL-21 16:40:00 to 11-JUL-21 16:40:00 (EST-5)
Location: BENEZETTE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm with winds estimated near 60 mph brought down a tree on wires in Benezette Township.

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 11-JUL-21 20:27:00 to 11-JUL-21 20:27:00 (EST-5)
Location: PITMAN
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees.

Thunderstorm Wind in PERRY, PENNSYLVANIA
From 11-JUL-21 19:49:00 to 11-JUL-21 19:49:00 (EST-5)
Location: NEW BUFFALO
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm with winds estimated near 60 mph brought down multiple trees, some on vehicles. No injuries reported.

Flash Flood in DAUPHIN, PENNSYLVANIA
From 11-JUL-21 21:15:00 to 11-JUL-21 23:15:00 (EST-5)
Location: (HAR)WSO HARRISBURGT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Flash flooding resulted in several cars stranded in water on Cameron Street.