A thunderstorm complex, with origins from the Midwest and Ohio Valley, produced a quick one to two inches of rainfall over portions of the Laurel Highlands and south-central Mountains during the early morning.  This lead to rapid rises on small creeks and streams, which overflowed their banks and flooded several secondary roads. Later in the afternoon, isolated severe thunderstorms developed over the Lower Susquehanna Valley ahead of a cold front. These storms produced wind damage in York and Lancaster counties.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 20-JUN-09 14:47:00 to 20-JUN-09 14:47:00 (EST-5)
Location: DALLASTOWN
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds estimated near 60 mph knocked down large tree limbs in Dallastown.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 20-JUN-09 14:49:00 to 20-JUN-09 14:49:00 (EST-5)
Location: YORK
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph knocked down trees and wires in York.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 20-JUN-09 14:45:00 to 20-JUN-09 14:45:00 (EST-5)
Location: YORK
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds estimated near 60 mph caused a partial wall and roof collapse of a vacant building in York.

Flash Flood in CAMBRIA, PENNSYLVANIA
From 20-JUN-09 07:00:00 to 20-JUN-09 09:00:00 (EST-5)
Location: SPANGLER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain from slow moving thunderstorms caused numerous flooded roads between Spangler and Patton.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 20-JUN-09 13:42:00 to 20-JUN-09 13:42:00 (EST-5)
Location: BRODBECK
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds estimated near 60 mph knocked down trees, wires and one utility pole in Codorus.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 20-JUN-09 13:30:00 to 20-JUN-09 13:30:00 (EST-5)
Location: BAINBRIDGE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds estimated near 60 mph knocked down trees just east of Bainbridge.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 20-JUN-09 14:43:00 to 20-JUN-09 14:43:00 (EST-5)
Location: YORK
Magnitude: 50.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds estimated near 60 mph knocked down a tree onto a house in York.

Thunderstorm Wind in YORK, PENNSYLVANIA
From 20-JUN-09 14:57:00 to 20-JUN-09 14:57:00 (EST-5)
Location: RED LION
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms winds estimated near 60 mph knocked down trees and wires in Red Lion.

Flash Flood in BLAIR, PENNSYLVANIA
From 20-JUN-09 07:00:00 to 20-JUN-09 09:00:00 (EST-5)
Location: BELLWOOD
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain from slow moving thunderstorms caused flash flooding on numerous township and secondary roads in Antis Township. A number of berm washouts were reported.

Thunderstorm Wind in LANCASTER, PENNSYLVANIA
From 20-JUN-09 15:09:00 to 20-JUN-09 15:09:00 (EST-5)
Location: MT NEBO
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds estimated near 60 mph knocked down trees and wires near Safe Harbor.