A shortwave trough and its associated surface cold front advanced across the upper Midwest and Great Lakes on July 10th. Conditions were favorable for strong/ severe downburst winds. HREF models at the time suggested a period of 1500 MUCAPE across the western counties, steep low-level lapse rates, and surface delta theta-e values approaching 20K. Flooding was likely due low shear and PWAT values near 1.5-1.8 inches.

Thunderstorm Wind in LAWRENCE, PENNSYLVANIA
From 10-JUL-20 14:16:00 to 10-JUL-20 14:16:00 (EST-5)
Location: IRISH RIPPLE
Magnitude: 50.00 EG
Reported by: Law Enforcement

Local law enforcement reported power lines down.

Thunderstorm Wind in LAWRENCE, PENNSYLVANIA
From 10-JUL-20 14:16:00 to 10-JUL-20 14:16:00 (EST-5)
Location: BESSEMER GWIN ARPT
Magnitude: 50.00 EG
Reported by: Law Enforcement

Local law enforcement reported numerous trees down in this vicinity.

Thunderstorm Wind in LAWRENCE, PENNSYLVANIA
From 10-JUL-20 14:25:00 to 10-JUL-20 14:25:00 (EST-5)
Location: LAWRENCE JCT
Magnitude: 50.00 EG
Reported by: Law Enforcement

Local law enforcement reported numerous trees down.

Thunderstorm Wind in MERCER, PENNSYLVANIA
From 10-JUL-20 14:56:00 to 10-JUL-20 14:56:00 (EST-5)
Location: LONDON
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees and power lines down in this vicinity.

Thunderstorm Wind in MERCER, PENNSYLVANIA
From 10-JUL-20 15:13:00 to 10-JUL-20 15:13:00 (EST-5)
Location: GROVE CITY
Magnitude: 50.00 EG
Reported by: 911 Call Center

Local 911 Call Center reported trees down in this vicinity.

Thunderstorm Wind in MERCER, PENNSYLVANIA
From 10-JUL-20 15:13:00 to 10-JUL-20 15:13:00 (EST-5)
Location: NEW VERNON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A local 911 Call Center reported trees down in this vicinity.

Thunderstorm Wind in MERCER, PENNSYLVANIA
From 10-JUL-20 15:15:00 to 10-JUL-20 15:15:00 (EST-5)
Location: GROVE CITY
Magnitude: 50.00 EG
Reported by: 911 Call Center

A local 911 Call Center reported power lines down on West Poplar.

Thunderstorm Wind in FAYETTE, PENNSYLVANIA
From 10-JUL-20 16:26:00 to 10-JUL-20 16:26:00 (EST-5)
Location: UNIONTOWN NORTH
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Local 911 Call Center reported roof blown off.

Thunderstorm Wind in FAYETTE, PENNSYLVANIA
From 10-JUL-20 16:29:00 to 10-JUL-20 16:29:00 (EST-5)
Location: UPPER MIDDLETOWN
Magnitude: 50.00 EG
Reported by: Social Media

Social media report of a number of trees down near Bittner Road.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 10-JUL-20 16:50:00 to 10-JUL-20 16:50:00 (EST-5)
Location: IMPERIAL
Magnitude: 50.00 EG
Reported by: NWS Employee

A NWS Employee reported numerous trees and large branches down.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 10-JUL-20 17:00:00 to 10-JUL-20 17:00:00 (EST-5)
Location: VAN VOORHIS
Magnitude: 50.00 EG
Reported by: Trained Spotter

A trained spotter reported a large tree down across Cracker Jack Road.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 10-JUL-20 17:07:00 to 10-JUL-20 17:07:00 (EST-5)
Location: INGRAM
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

A local citizen reported a tree down through a house on the 200 Block of West Steuben Street.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 10-JUL-20 17:10:00 to 10-JUL-20 17:10:00 (EST-5)
Location: ROOK
Magnitude: 50.00 EG
Reported by: 911 Call Center

A local 911 Call Center reported trees and wires down.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 10-JUL-20 17:15:00 to 10-JUL-20 17:15:00 (EST-5)
Location: OPTION
Magnitude: 50.00 EG
Reported by: Law Enforcement

Local law enforcement reported power lines down 3030 Fredrick Street.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 10-JUL-20 17:15:00 to 10-JUL-20 17:15:00 (EST-5)
Location: GLENFIELD
Magnitude: 50.00 EG
Reported by: 911 Call Center

A 911 Call Center reported live wires down.

Thunderstorm Wind in WESTMORELAND, PENNSYLVANIA
From 10-JUL-20 17:15:00 to 10-JUL-20 17:15:00 (EST-5)
Location: PRICEDALE
Magnitude: 50.00 EG
Reported by: 911 Call Center

A local 911 Call Center reported a tree blocking the intersection fo Broad Ave and Bedsworth.

Thunderstorm Wind in FAYETTE, PENNSYLVANIA
From 10-JUL-20 17:30:00 to 10-JUL-20 17:30:00 (EST-5)
Location: LEITH
Magnitude: 50.00 EG
Reported by: 911 Call Center

A local 911 Call Center reported trees and wires down.

Flash Flood in FAYETTE, PENNSYLVANIA
From 10-JUL-20 17:45:00 to 10-JUL-20 19:45:00 (EST-5)
Location: BUTE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Flooding reported in north Union Township.

Thunderstorm Wind in ARMSTRONG, PENNSYLVANIA
From 10-JUL-20 18:10:00 to 10-JUL-20 18:10:00 (EST-5)
Location: CHRISTY MANOR
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Trees were reported down in Crooked Creek Park via social media.

Flood in ALLEGHENY, PENNSYLVANIA
From 10-JUL-20 19:10:00 to 10-JUL-20 19:10:00 (EST-5)
Location: (AGC)ALLEGHENY CO AR
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency managers reported flooding along Lebanon Church Road. Flooding reported at the 4700 Block of Wallingford Street; flooding in the vicinity of Sharpsburg.