A passing upper level trough with strong mid-level flow and diurnal heating under a moist low-level airmass helped generate severe storms across the Ohio River Valley. Effective bulk shear was 30-40kts and supported storm organization. ML CAPE ranged from 1000-2000J/kg by mid-afternoon, steep lapse rates helped efficient downdraft acceleration.
Training storms also created localized flooding along a convergence axis from southeast Ohio to southwest PA.

Hail in ALLEGHENY, PENNSYLVANIA
From 30-JUN-21 12:15:00 to 30-JUN-21 12:16:00 (EST-5)
Location: OPTION
Magnitude: 1.00 
Reported by: Public

Hail up to 1 inch was observed by a citizen.

Hail in ALLEGHENY, PENNSYLVANIA
From 30-JUN-21 12:23:00 to 30-JUN-21 12:24:00 (EST-5)
Location: MUNHALL
Magnitude: 0.75 
Reported by: Public

Hail up to a penny was observed by a citizen.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 30-JUN-21 12:17:00 to 30-JUN-21 12:17:00 (EST-5)
Location: OPTION
Magnitude: 55.00 EG
Reported by: Social Media

Social media report of tree and power lines down along 2800 Block of Sarah Street. Time estimated by on radar.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 30-JUN-21 12:29:00 to 30-JUN-21 12:29:00 (EST-5)
Location: CLAIRTON
Magnitude: 55.00 EG
Reported by: Emergency Manager

An emergency manager reported sporadic trees and power lines down throughout the county.

Thunderstorm Wind in WESTMORELAND, PENNSYLVANIA
From 30-JUN-21 12:50:00 to 30-JUN-21 12:50:00 (EST-5)
Location: MURRYSVILLE
Magnitude: 55.00 EG
Reported by: 911 Call Center

A 911 Call Center reported a tree on a road. Time estimated based on radar.

Thunderstorm Wind in WESTMORELAND, PENNSYLVANIA
From 30-JUN-21 12:55:00 to 30-JUN-21 12:55:00 (EST-5)
Location: HAHNTOWN
Magnitude: 55.00 EG
Reported by: 911 Call Center

A 911 Call Center reported a tree down on wires due to wind. Time estimated based on radar.

Thunderstorm Wind in WESTMORELAND, PENNSYLVANIA
From 30-JUN-21 13:04:00 to 30-JUN-21 13:04:00 (EST-5)
Location: EXPORT
Magnitude: 55.00 EG
Reported by: 911 Call Center

A 911 Call Center reported multiple trees down around the area. Time estimated based on radar.

Thunderstorm Wind in WESTMORELAND, PENNSYLVANIA
From 30-JUN-21 13:19:00 to 30-JUN-21 13:19:00 (EST-5)
Location: SLICKVILLE
Magnitude: 55.00 EG
Reported by: Fire Department/Rescue

A Fire Chief reported tree down at the intersection of County Rd and Roman Rd. Time estimated base don radar.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 30-JUN-21 13:43:00 to 30-JUN-21 13:43:00 (EST-5)
Location: ATLASBURG
Magnitude: 55.00 EG
Reported by: Trained Spotter

A Trained Spotter reported multiple trees down on Perry Road.

Thunderstorm Wind in INDIANA, PENNSYLVANIA
From 30-JUN-21 13:52:00 to 30-JUN-21 13:52:00 (EST-5)
Location: GRATTON
Magnitude: 55.00 EG
Reported by: Social Media

Social media report shows large tree branches down and power outages.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 30-JUN-21 13:57:00 to 30-JUN-21 13:57:00 (EST-5)
Location: CLIFF MINE
Magnitude: 55.00 EG
Reported by: 911 Call Center

A 911 Call Center reported a tree down on a home.

Thunderstorm Wind in FAYETTE, PENNSYLVANIA
From 30-JUN-21 14:33:00 to 30-JUN-21 14:33:00 (EST-5)
Location: CARDALE
Magnitude: 55.00 EG
Reported by: Trained Spotter

A Trained Spotter reported multiple trees down.

Thunderstorm Wind in BEAVER, PENNSYLVANIA
From 30-JUN-21 17:18:00 to 30-JUN-21 17:18:00 (EST-5)
Location: BELLOWSVILLE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Social media report of snapped tree and limbs in the city of Industry, PA.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 30-JUN-21 13:34:00 to 30-JUN-21 13:34:00 (EST-5)
Location: CLAYSVILLE
Magnitude: 52.00 EG
Reported by: Trained Spotter

A Trained Spotter reported gusts around 60 mph near Claysville, PA.

Flash Flood in WASHINGTON, PENNSYLVANIA
From 30-JUN-21 14:15:00 to 30-JUN-21 15:30:00 (EST-5)
Location: GABBY HGTS
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A 911 Call Center reported a road washed out near the intersection of Ridgewood Drive and Franklin Farms Rd near Chartiers Creek.

Flash Flood in ALLEGHENY, PENNSYLVANIA
From 30-JUN-21 13:14:00 to 30-JUN-21 13:14:00 (EST-5)
Location: PLEASANT HILLS
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple report of flooding in the Baldwin, Pleasant Hills, West Mifflin, and Whitehall. 911 Call Center reported flood West 5th Avenue in McKeesport. A Trained Spotter reported Route 51 through Pleasant Hills is closed due to flooding.