Several multicell clusters and short convective line segments formed along a prefrontal trough during the afternoon and evening hours on June 30, 2021. A few storms in the southern tier and in the Susquehanna Valley produced wind damage.

Thunderstorm Wind in LYCOMING, PENNSYLVANIA
From 30-JUN-21 14:00:00 to 30-JUN-21 14:00:00 (EST-5)
Location: MONTOURSVILLE
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm producing winds estimated near 60 mph knocked down trees onto wires southwest of Montoursville.

Thunderstorm Wind in UNION, PENNSYLVANIA
From 30-JUN-21 15:26:00 to 30-JUN-21 15:26:00 (EST-5)
Location: LOCHIEL
Magnitude: 52.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm with winds estimated at 60 mph destroyed an outbuilding on Fairsom Ct in East Buffalo Township.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 30-JUN-21 15:21:00 to 30-JUN-21 15:21:00 (EST-5)
Location: MILTON
Magnitude: 65.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm producing winds estimated near 75 mph caused a roof to blow off and a partial wall to collapse at a cemetery building alongside Harmony Cemetery in Milton, PA.

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 30-JUN-21 17:38:00 to 30-JUN-21 17:38:00 (EST-5)
Location: BARNITZ
Magnitude: 52.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm producing winds estimated near 60 mph downed multiple trees and powerlines on Sandbank Rd, Pine St, and across Dickinson Township.

Thunderstorm Wind in DAUPHIN, PENNSYLVANIA
From 30-JUN-21 18:05:00 to 30-JUN-21 18:05:00 (EST-5)
Location: MIDDLETOWN
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm producing winds estimated near 60 mph caused several trees to fall onto Swatara Creek Rd.

Thunderstorm Wind in FULTON, PENNSYLVANIA
From 30-JUN-21 16:40:00 to 30-JUN-21 16:40:00 (EST-5)
Location: MC CONNELLSBURG
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph brought down trees and wires on W Wood Street.

Thunderstorm Wind in FULTON, PENNSYLVANIA
From 30-JUN-21 16:43:00 to 30-JUN-21 16:43:00 (EST-5)
Location: KNOBSVILLE
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 downed multiple trees between Cowans Gap State Park and Turkey Road.

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 30-JUN-21 17:50:00 to 30-JUN-21 17:50:00 (EST-5)
Location: ALLEN
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 caused multiple trees to fall across Monroe Township.

Thunderstorm Wind in CUMBERLAND, PENNSYLVANIA
From 30-JUN-21 17:55:00 to 30-JUN-21 17:55:00 (EST-5)
Location: SHEPERDSTOWN
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 multiple trees across Upper and Lower Allen Townships.