Slow moving thunderstorms with heavy rain affected eastern Pennsylvania during the afternoon and evening on the 13th and caused flooding. The thunderstorms formed near an inverted trof boundary that extended north from a low pressure system in North Carolina.

Flood in BUCKS, PENNSYLVANIA
From 13-JUN-09 20:00:00 to 14-JUN-09 01:59:00 (EST-5)
Location: LANGHORNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from the heavy rain upstream caused flooding to continue into the night of the 13th along lower stretches of the Neshaminy Creek. The Neshaminy Creek at Langhorne was above its 9 foot flood stage from 717 p.m. EDT on the 13th through 259 a.m. EDT on the 14th. It crested at 11.9 feet at 1230 a.m. EDT on the 14th. Storm totals included 4.61 inches in Richboro and 2.21 inches in Langhorne.

Flash Flood in BUCKS, PENNSYLVANIA
From 13-JUN-09 18:17:00 to 13-JUN-09 20:00:00 (EST-5)
Location: LANGHORNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from heavy rain upstream caused flooding along lower parts of the Neshaminy Creek. The Neshaminy Creek at Langhorne was above its 9 foot flood stage from 717 p.m. EDT on the 13th through 259 a.m. EDT on the 14th. It crested at 11.9 feet at 1230 a.m. EDT on the 14th. Storm totals included 4.61 inches in Richboro and 2.21 inches in Langhorne.

Flash Flood in MONTGOMERY, PENNSYLVANIA
From 13-JUN-09 14:25:00 to 13-JUN-09 19:30:00 (EST-5)
Location: PROSPECTVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorms with torrential downpours dropped a Doppler Radar estimated 3 to 6 inches across southern Montgomery County from Whitpain Township northeast through Horsham Township. This caused poor drainage flooding as well as flooding along the Wissahickon and Pennypack Creeks. Several roads were closed due to the flooding and marine rescues from stranded vehicles. The worst reported flooding occurred along the Pennypack Creek at the Robert Bruce Apartments along the Hatboro and Upper Moreland Township line. The creek flooded into the parking lot and submerged a few vehicles. Residents moved from some lower lying apartments to higher ones as a precaution. Event precipitation totals included 3.78 inches in Willow Grove and 3.50 inches in Ambler.

Flash Flood in MONTGOMERY, PENNSYLVANIA
From 13-JUN-09 16:05:00 to 13-JUN-09 19:00:00 (EST-5)
Location: ORELAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from the heavy rain across southern Montgomery County led to flooding along the Wissahickon Creek. The Wissahickon Creek at Fort Washington was above its 9 foot flood stage from 505 p.m. EDT through 1049 p.m. EDT on the 13th. It crested at 11.78 feet at 730 p.m. EDT. Doppler Radar storm total estimates reached between 5 and 6 inches in the county. Actual reported amounts included 3.78 inches in Willow Grove and 3.50 inches in Ambler.

Flood in MONTGOMERY, PENNSYLVANIA
From 13-JUN-09 19:00:00 to 13-JUN-09 21:49:00 (EST-5)
Location: ORELAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from the heavy rain across southern Montgomery County caused flooding along the Wissahickon Creek to occur deep into the evening on the 13th. The Wissahickon Creek at Fort Washington was above its 9 foot flood stage from 505 p.m. EDT through 1049 p.m. EDT on the 13th. It crested at 11.78 feet at 730 p.m. EDT. Doppler Radar storm total estimates reached between 5 and 6 inches in the county. Actual reported amounts included 3.78 inches in Willow Grove and 3.50 inches in Ambler.

Flash Flood in CARBON, PENNSYLVANIA
From 13-JUN-09 14:15:00 to 13-JUN-09 17:15:00 (EST-5)
Location: SUMMIT HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorms with torrential downpours caused poor drainage flooding and flooding of smaller creeks in and around the Mahoning Creek Basin.

Flood in PHILADELPHIA, PENNSYLVANIA
From 13-JUN-09 19:15:00 to 14-JUN-09 02:37:00 (EST-5)
Location: MANAYUNK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from the heavy rain in Montgomery County caused flooding along the Wissahickon Creek within Philadelphia. The Wissahickon Creek at its mouth was above its 5 foot flood stage from 815 p.m. EDT on the 13th through 337 a.m. EDT on the 14th. It crested at 6.65 feet at 1145 p.m. EDT on the 13th.

Flash Flood in CHESTER, PENNSYLVANIA
From 13-JUN-09 17:50:00 to 13-JUN-09 17:50:00 (EST-5)
Location: EXTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorms with torrential downpours caused roadway flooding and flooding of creeks in and around Exton in West Whiteland Township. Doppler Radar storm total estimates reached three inches in the area and a measured storm total of 2.47 inches was reported from nearby Downingtown.

Flash Flood in BUCKS, PENNSYLVANIA
From 13-JUN-09 14:10:00 to 13-JUN-09 20:40:00 (EST-5)
Location: BON AIR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Slow moving thunderstorms with torrential downpours caused poor drainage as well as flash flooding of smaller streams and creeks including the headwaters of the Neshaminy Creek in and around Doylestown, Warwick, Warrington and Westminster Townships in central Bucks County. Doppler Radar storm total estimates reached between 5 and 6 inches in the area.  In Warwick Township, two water rescues were performed by emergency responders. A man became stranded in his vehicle after the Neshaminy overflowed on Creek Road and a woman was rescued from her vehicle on Stover Street after a retention basin overflowed. In Doylestown, both Pine Run and Chapman Road were closed. The Little Neshaminy Creek at Neshaminy was above its 8 foot flood stage from 337 p.m. EDT through 939 p.m. EDT on the 13th. It crested at 9.21 feet at 445 p.m. EDT. Event storm totals included 4.61 inches in Richboro (Northampton Township).

Flood in PHILADELPHIA, PENNSYLVANIA
From 13-JUN-09 20:41:00 to 13-JUN-09 23:39:00 (EST-5)
Location: TACONY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from the heavy rain in Montgomery County caused flooding along the Pennypack Creek within Philadelphia. The Pennypack Creek at the Rhawn Street Bridge was above its 7 foot flood stage from 941 p.m. EDT on the 13th through 1239 a.m. EDT on the 14th. It crested at 7.8 feet at 1130 p.m. EDT on the 13th.