A shortwave crossing the region helped support for the development of showers and thunderstorms a few of which became severe. However, the bigger threat was heavy rain, as there was plenty of low level moisture to support one to two inch an hour rain rates. Once cell in particular produced 3+ inches of rain as it slowly moved southward across Venango, Indiana, Westmoreland, and Armstrong counties in Pennsylvania and Garrett county in Maryland. The towns along the Kiskiminetas River; Apollo, Vandergrift, and Gilpin were hit particularly hard by flash flooding.

Flood in BUTLER, PENNSYLVANIA
From 28-AUG-13 14:35:00 to 28-AUG-13 17:45:00 (EST-5)
Location: CHICORA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported road and basement flooding in Chicora.

Flood in WESTMORELAND, PENNSYLVANIA
From 28-AUG-13 15:15:00 to 28-AUG-13 18:30:00 (EST-5)
Location: ROARING RUN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

State official reported that Back Creek Road was closed due to flooding.

Flood in FAYETTE, PENNSYLVANIA
From 28-AUG-13 15:15:00 to 28-AUG-13 18:30:00 (EST-5)
Location: INDIAN HEAD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

State official reported that Indian Creek Valley Road was closed due to flooding.

Flood in INDIANA, PENNSYLVANIA
From 28-AUG-13 11:02:00 to 28-AUG-13 18:15:00 (EST-5)
Location: WHITE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Department of Highways reported ponding of water on Route 286 in Saltsburg Boro.

Flood in WESTMORELAND, PENNSYLVANIA
From 28-AUG-13 14:35:00 to 28-AUG-13 18:30:00 (EST-5)
Location: WILPEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported that Route 711 was flooded in Ligonier.

Flood in INDIANA, PENNSYLVANIA
From 28-AUG-13 11:05:00 to 28-AUG-13 18:15:00 (EST-5)
Location: STRANGFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported several inches of water on Route 22 in Blairsville.

Flood in FAYETTE, PENNSYLVANIA
From 28-AUG-13 15:15:00 to 28-AUG-13 18:15:00 (EST-5)
Location: PENNSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Local newspaper reported that Everson Valley Road was washed out due to flooding.

Flood in WESTMORELAND, PENNSYLVANIA
From 28-AUG-13 11:18:00 to 28-AUG-13 19:00:00 (EST-5)
Location: AVONMORE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Route 981 is flooded and closed between Mercer Hill Road and Substation Road.

Flood in WESTMORELAND, PENNSYLVANIA
From 28-AUG-13 16:00:00 to 28-AUG-13 19:00:00 (EST-5)
Location: DONEGAL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

State official reported that Route 711 was closed near Donegal due to flooding.

Flood in WESTMORELAND, PENNSYLVANIA
From 28-AUG-13 16:00:00 to 28-AUG-13 19:00:00 (EST-5)
Location: NEW ALEXANDRIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

State official reported that Route 981 was closed in Derry Township due to flooding.

Flood in WESTMORELAND, PENNSYLVANIA
From 28-AUG-13 16:00:00 to 28-AUG-13 16:00:00 (EST-5)
Location: EAST VANDERGRIFT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

State official reported numerous roads closed due to flooding across Allegheny Township.

Flood in WESTMORELAND, PENNSYLVANIA
From 28-AUG-13 16:10:00 to 28-AUG-13 19:10:00 (EST-5)
Location: LUXOR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Amateur radio reported that Little Brabtree Creek near Luxor is out of it's banks and flooding basements and property.

Flash Flood in ARMSTRONG, PENNSYLVANIA
From 28-AUG-13 15:00:00 to 28-AUG-13 18:15:00 (EST-5)
Location: APOLLO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Flash flooding caused several roads to be closed in southern Armstrong County, including Route 66 from Ford City southward. 4 feet of water was over Route 66th in Apollo causing tractor trailers to get stuck. In addition, several residents on Glade Run Road had to evacuate their residences by boat. In total, over 200 homes sustained flood damage, mainly to basements.

Debris Flow in WESTMORELAND, PENNSYLVANIA
From 28-AUG-13 17:00:00 to 28-AUG-13 17:30:00 (EST-5)
Location: GOSSER HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager reported a land slide onto Whiteys Road at School Road.

Flood in ARMSTRONG, PENNSYLVANIA
From 28-AUG-13 15:15:00 to 28-AUG-13 18:15:00 (EST-5)
Location: BOGGSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported that several people were being rescued from flooded homes along Buffalo Creek on South Scenic Road. In addition Iron Bridge Road was also closed.

Heavy Rain in VENANGO, PENNSYLVANIA
From 28-AUG-13 11:04:00 to 28-AUG-13 11:04:00 (EST-5)
Location: DEMPSEYTOWN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Local federal agency reported 1.5 inches in one hour and 2.6 inches in three hours.

Heavy Rain in VENANGO, PENNSYLVANIA
From 28-AUG-13 11:07:00 to 28-AUG-13 11:07:00 (EST-5)
Location: COOPERSTOWN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Local observer reported 2.31 inches of rain in the past 4 1/2 hours.

Heavy Rain in ARMSTRONG, PENNSYLVANIA
From 28-AUG-13 15:30:00 to 28-AUG-13 15:30:00 (EST-5)
Location: BRADYS BEND
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 3.10 inches of rain fell through this afternoon.

Thunderstorm Wind in FAYETTE, PENNSYLVANIA
From 28-AUG-13 15:00:00 to 28-AUG-13 15:00:00 (EST-5)
Location: OHIOPYLE
Magnitude: 50.00 EG
Property damage: 0.25K
Crop damage: 0.00K
Reported by: State Official

State official reported trees down.

Thunderstorm Wind in FAYETTE, PENNSYLVANIA
From 28-AUG-13 14:50:00 to 28-AUG-13 14:50:00 (EST-5)
Location: MILL RUN
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: State Official

State official reported trees down in Springfield Township.

Flood in VENANGO, PENNSYLVANIA
From 28-AUG-13 11:00:00 to 28-AUG-13 17:45:00 (EST-5)
Location: ROCKY GROVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager reported that widespread flooding was occurring over 5 municipalities. There were 16 roadways flooded and 3 completely closed due to several feet of water. Rainfall rates were reported to be 1.50 per hour and 2.60 inches reported to have fallen in Dempseytown in three hours.

Flood in BUTLER, PENNSYLVANIA
From 28-AUG-13 14:35:00 to 28-AUG-13 17:45:00 (EST-5)
Location: BRUIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported that Route 268 in Bruin is closed due to flooding. In addition, flooding has been reported in Petrolia.