A broken line of showers and storms developed in a warm and very humid airmass to the south of a weak stationary front over southern New York state during the afternoon and evening of August 12, 2021. This line produced sporadic wind damage as it progressed southeastward across central Pennsylvania, particularly along the I-80 corridor.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 12-AUG-21 17:05:00 to 12-AUG-21 17:05:00 (EST-5)
Location: CLEAR RUN
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down a tree onto a vehicle near DuBois.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 12-AUG-21 20:15:00 to 12-AUG-21 20:15:00 (EST-5)
Location: MUNCY
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires near Muncy.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 12-AUG-21 21:00:00 to 12-AUG-21 21:00:00 (EST-5)
Location: HERNDON
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm producing winds estimated near 60 mph knocked down trees onto wires near Herndon.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 12-AUG-21 21:15:00 to 12-AUG-21 21:15:00 (EST-5)
Location: WEIGHT SCALE
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down trees across a roadway near Shamokin.

Thunderstorm Wind in SCHUYLKILL, PENNSYLVANIA
From 12-AUG-21 21:38:00 to 12-AUG-21 21:38:00 (EST-5)
Location: BEUCHLER
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down a tree across lanes on I-81 near Pine Grove.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 12-AUG-21 22:10:00 to 12-AUG-21 22:10:00 (EST-5)
Location: NEWBERRYTOWN
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm producing winds estimated near 60 mph knocked down a tree near Newberrytown.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 12-AUG-21 19:36:00 to 12-AUG-21 19:36:00 (EST-5)
Location: GARDEN VIEW
Magnitude: 52.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees, some across across roadways, just west of Williamsport.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 12-AUG-21 12:15:00 to 12-AUG-21 12:15:00 (EST-5)
Location: BROOKSIDE
Magnitude: 52.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires near English Center.

Thunderstorm Wind in TIOGA, PENNSYLVANIA
From 12-AUG-21 12:25:00 to 12-AUG-21 12:25:00 (EST-5)
Location: LIBERTY
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires west of Liberty.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 12-AUG-21 12:35:00 to 12-AUG-21 12:35:00 (EST-5)
Location: BODINES
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm producing winds estimated near 60 mph knocked down multiple wires onto a roadway southeast of Marsh Hill.

Thunderstorm Wind in SULLIVAN, PENNSYLVANIA
From 12-AUG-21 12:55:00 to 12-AUG-21 12:55:00 (EST-5)
Location: MILLVIEW
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm producing winds estimated near 60 mph knocked down multiple wires near Forksville.

Thunderstorm Wind in SULLIVAN, PENNSYLVANIA
From 12-AUG-21 13:05:00 to 12-AUG-21 13:05:00 (EST-5)
Location: MUNCY VLY
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees near Muncy Valley.

Thunderstorm Wind in SULLIVAN, PENNSYLVANIA
From 12-AUG-21 13:12:00 to 12-AUG-21 13:12:00 (EST-5)
Location: MILDRED
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and blew in a garage door in Mildred.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 12-AUG-21 17:05:00 to 12-AUG-21 17:05:00 (EST-5)
Location: DU BOIS
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires in DuBois.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 12-AUG-21 17:06:00 to 12-AUG-21 17:06:00 (EST-5)
Location: SABULA
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires in Treasure Lake.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 12-AUG-21 18:23:00 to 12-AUG-21 18:23:00 (EST-5)
Location: KEEWAYDIN
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down a tree across a road near Keewaydin.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 12-AUG-21 18:32:00 to 12-AUG-21 18:32:00 (EST-5)
Location: HEPBURNA
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down trees across a road south of Grampian.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 12-AUG-21 18:40:00 to 12-AUG-21 18:40:00 (EST-5)
Location: NEW MILLPORT
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires near New Millport.

Thunderstorm Wind in CLEARFIELD, PENNSYLVANIA
From 12-AUG-21 18:45:00 to 12-AUG-21 18:45:00 (EST-5)
Location: CLEARFIELD
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down trees west of Clearfield.

Thunderstorm Wind in CENTRE, PENNSYLVANIA
From 12-AUG-21 19:26:00 to 12-AUG-21 19:26:00 (EST-5)
Location: UNIONVILLE
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires north of Unionville.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 12-AUG-21 19:08:00 to 12-AUG-21 19:08:00 (EST-5)
Location: SLATE RUN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down several trees near Slate Run and one person was seriously injured.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 12-AUG-21 19:30:00 to 12-AUG-21 19:30:00 (EST-5)
Location: QUENASHAUKNE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down a tree onto a vehicle north of Linden, injuring one person.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 12-AUG-21 19:49:00 to 12-AUG-21 19:49:00 (EST-5)
Location: DUBOISTOWN
Magnitude: 52.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires in multiple locations around the Williamsport area.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 12-AUG-21 20:25:00 to 12-AUG-21 20:25:00 (EST-5)
Location: KISSIMMEE
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires west of Middleburg.

Thunderstorm Wind in COLUMBIA, PENNSYLVANIA
From 12-AUG-21 20:33:00 to 12-AUG-21 20:33:00 (EST-5)
Location: BENTON
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires along Upper Raven Creek Road in Benton Township.