A broken line of showers and a few thunderstorms developed ahead of a cold front that was approaching central Pennsylvania during the late afternoon and evening of September 8, 2021. One particular cell along this line intensified over Mifflin County and produced sporadic wind damage as it progressed eastward across Snyder and Northumberland counties. This cell also produced two weak tornadoes (an EF-0 and an EF-1) in Snyder County.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 08-SEP-21 16:30:00 to 08-SEP-21 16:30:00 (EST-5)
Location: MT PLEASANT MILLS
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 several trees along Route 104 near Mount Pleasant Mills.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 08-SEP-21 16:40:00 to 08-SEP-21 16:40:00 (EST-5)
Location: FREEBURG
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph knocked down several trees and destroyed two sheds south of Freeburg.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 08-SEP-21 17:10:00 to 08-SEP-21 17:10:00 (EST-5)
Location: DEIBLERS
Magnitude: 52.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm producing winds estimated near 60 mph knocked down numerous trees between Stonington and Paxinos.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 08-SEP-21 16:00:00 to 08-SEP-21 16:00:00 (EST-5)
Location: MC CLURE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees in McClure.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 08-SEP-21 16:30:00 to 08-SEP-21 16:30:00 (EST-5)
Location: MIDDLEBURG
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees south of Middleburg.

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 08-SEP-21 16:45:00 to 08-SEP-21 16:45:00 (EST-5)
Location: KANTZ
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm producing winds estimated near 60 mph knocked down numerous trees and wires along Produce Road, including two trees onto a house.

Thunderstorm Wind in MIFFLIN, PENNSYLVANIA
From 08-SEP-21 15:44:00 to 08-SEP-21 15:44:00 (EST-5)
Location: LEWISTOWN
Magnitude: 52.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

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

Thunderstorm Wind in SNYDER, PENNSYLVANIA
From 08-SEP-21 16:00:00 to 08-SEP-21 16:00:00 (EST-5)
Location: MC CLURE
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 just to the southwest of McClure.

Thunderstorm Wind in NORTHUMBERLAND, PENNSYLVANIA
From 08-SEP-21 16:50:00 to 08-SEP-21 16:50:00 (EST-5)
Location: DUNKELBERGERS
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 several trees between State Road and Lower Augusta Township.