Scattered thunderstorms formed in an unstable air mass on the 28th.  The storms took advantage of dry air aloft to create downburst conditions in a few cases, producing reports of wind damage in Allegheny, Lawrence, and Westmoreland Counties. Also, one to two inches of rain on already wet ground created flooding issues in portions of western Lawrence County.
A lull in activity occurred during the night and into the following morning.  Later in the day, renewed instability, plus residual outflow boundaries from previous convection, helped to expand thunderstorm coverage during the evening of the 29th and into the early morning hours of the 30th ahead of a sagging cold front.   Steep lapse rates and dry air aloft supported many instances of thunderstorms with damaging wind.  Damage was mainly to trees, but there were a few instances of roof damage in Washington County.  Hail was much less widespread, but a few reports of dime to quarter sized hail were received.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 28-JUN-19 18:25:00 to 28-JUN-19 18:25:00 (EST-5)
Location: TALLEY GAVEY
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Department of Highways

The county DOT office reported single trees down on Talley Cavey Road and Wildwood Road.  Time of occurrence was estimated from radar.

Thunderstorm Wind in LAWRENCE, PENNSYLVANIA
From 28-JUN-19 18:36:00 to 28-JUN-19 18:36:00 (EST-5)
Location: MT JACKSON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A 911 dispatcher reported that trees and power lines were down just east of Mount Jackson.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 19:14:00 to 29-JUN-19 19:14:00 (EST-5)
Location: SOUTH STRABANE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A 911 dispatcher stated that trees were down on the 400 block of Rankin Road.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 19:09:00 to 29-JUN-19 19:09:00 (EST-5)
Location: SUDAN
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: State Official

Trees and wires were blown down and blocked Bentleyville Road, according to a 911 dispatcher.

Thunderstorm Wind in LAWRENCE, PENNSYLVANIA
From 28-JUN-19 18:37:00 to 28-JUN-19 18:37:00 (EST-5)
Location: MT JACKSON
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Social Media

A social media user reported that large trees were blown down on Brewster Road.

Flash Flood in LAWRENCE, PENNSYLVANIA
From 28-JUN-19 18:47:00 to 28-JUN-19 20:30:00 (EST-5)
Location: COVERTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A 911 dispatcher reported that Cover Road was flooded near the railroad crossing.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 19:14:00 to 29-JUN-19 19:14:00 (EST-5)
Location: INDEPENDENCE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: State Official

Trees were felled on Washington Pike, as state by county 911 personnel.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 19:14:00 to 29-JUN-19 19:14:00 (EST-5)
Location: PENOWA
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: State Official

Wire poles were blown down near 238 Meadowcroft Road according to county 911 personnel.

Flash Flood in LAWRENCE, PENNSYLVANIA
From 28-JUN-19 18:57:00 to 28-JUN-19 20:30:00 (EST-5)
Location: PARKSTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

The county 911 dispatch center reported that the intersection of Route 224 and Old Youngstown Road was flooded.

Flash Flood in LAWRENCE, PENNSYLVANIA
From 28-JUN-19 19:04:00 to 28-JUN-19 20:30:00 (EST-5)
Location: EDINBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A local fire department reported significant flooding between Edinburg and Hillsville.

Thunderstorm Wind in FAYETTE, PENNSYLVANIA
From 29-JUN-19 19:15:00 to 29-JUN-19 19:15:00 (EST-5)
Location: DAWSON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter stated that trees were blown down at Linden Hall Golf Course.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 19:15:00 to 29-JUN-19 19:15:00 (EST-5)
Location: GLENNES HGTS
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

The county 911 call center indicated that trees were blown down at the intersection of Old 71 and Brewer Street.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 28-JUN-19 19:28:00 to 28-JUN-19 19:28:00 (EST-5)
Location: CRAFTON
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Social Media

A social media user reported that trees were blown down just west of Crafton.

Thunderstorm Wind in WESTMORELAND, PENNSYLVANIA
From 28-JUN-19 19:35:00 to 28-JUN-19 19:35:00 (EST-5)
Location: DARRAGH
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Power lines were blown down at the intersection of Route 136 and Wooster Street, according to county 911 dispatchers.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 19:17:00 to 29-JUN-19 19:17:00 (EST-5)
Location: PENOWA
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: State Official

County 911 dispatchers reported that trees were blown down along Fallen Timber Road.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 19:23:00 to 29-JUN-19 19:23:00 (EST-5)
Location: INDEPENDENCE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

The 911 call center reported that trees were down at the intersection of Sugar Run Road and Washington Pike.

Flash Flood in WESTMORELAND, PENNSYLVANIA
From 28-JUN-19 19:52:00 to 28-JUN-19 19:52:00 (EST-5)
Location: DARRAGH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The broadcast media reported that water was flowing down Route 136 in town.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 28-JUN-19 20:15:00 to 28-JUN-19 20:15:00 (EST-5)
Location: PORT VUE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Social Media

A social media user reported that trees were blown down, and also shared a picture of their trampoline, which had been thrown across the yard.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 19:44:00 to 29-JUN-19 19:44:00 (EST-5)
Location: BUDAVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A roof was blown off of a house on Dry Ridge Road, according to the county 911 call center.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 20:00:00 to 29-JUN-19 20:00:00 (EST-5)
Location: WEST ALEXANDER
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

The public reported that a roof was blown off of a house in West Alexander.

Flash Flood in ALLEGHENY, PENNSYLVANIA
From 28-JUN-19 21:28:00 to 28-JUN-19 22:00:00 (EST-5)
Location: PORT VUE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The broadcast media reported that Market Street was flooded.

Hail in BUTLER, PENNSYLVANIA
From 29-JUN-19 11:17:00 to 29-JUN-19 11:17:00 (EST-5)
Location: MIDDLE LANCASTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail covered the golf course at Strawberry Ridge.

Hail in BUTLER, PENNSYLVANIA
From 29-JUN-19 11:27:00 to 29-JUN-19 11:27:00 (EST-5)
Location: MIDDLE LANCASTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 20:00:00 to 29-JUN-19 20:00:00 (EST-5)
Location: CLAYSVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A 911 dispatcher stated that trees were down on Gashel Road in Donegal Township.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 20:06:00 to 29-JUN-19 20:06:00 (EST-5)
Location: CLAYSVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

The public reported roof damage to a home in Claysville.

Thunderstorm Wind in BUTLER, PENNSYLVANIA
From 29-JUN-19 15:08:00 to 29-JUN-19 15:08:00 (EST-5)
Location: EUCLID
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Power lines were reported to be blown down by a 911 dispatcher.

Hail in BUTLER, PENNSYLVANIA
From 29-JUN-19 11:38:00 to 29-JUN-19 11:38:00 (EST-5)
Location: MAYOMA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A social media user reported a mix of dime and quarter-sized hail.

Hail in BUTLER, PENNSYLVANIA
From 29-JUN-19 15:02:00 to 29-JUN-19 15:02:00 (EST-5)
Location: ELORA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 20:18:00 to 29-JUN-19 20:18:00 (EST-5)
Location: TENMILE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Wire poles were blown down near 100 Ridge Church Road, according to a 911 dispatcher.

Thunderstorm Wind in FAYETTE, PENNSYLVANIA
From 29-JUN-19 20:32:00 to 29-JUN-19 20:32:00 (EST-5)
Location: DUTCH HILL
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

The public reported trees and power lines down in Luzerne.

Thunderstorm Wind in BUTLER, PENNSYLVANIA
From 29-JUN-19 15:15:00 to 29-JUN-19 15:15:00 (EST-5)
Location: ZELIENOPLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

According to the county 911 call center, power lines were blown down in Zelienople.

Thunderstorm Wind in JEFFERSON, PENNSYLVANIA
From 29-JUN-19 15:25:00 to 29-JUN-19 15:25:00 (EST-5)
Location: HARLAN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A 911 dispatcher reported that trees were blown down near the intersection of Love Road and State Route 949. Time of occurrence was estimated from radar.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 29-JUN-19 16:20:00 to 29-JUN-19 16:20:00 (EST-5)
Location: LEETSDALE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were blown down in Leetsdale, according to county 911 dispatchers.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 29-JUN-19 16:20:00 to 29-JUN-19 16:20:00 (EST-5)
Location: FAIROAKS
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Social Media

A social media user reported that several trees were blown down in Walter Panek Park.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 29-JUN-19 16:21:00 to 29-JUN-19 16:21:00 (EST-5)
Location: BELL ACRES
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported that several trees were blown down in Bell Acres.

Thunderstorm Wind in ALLEGHENY, PENNSYLVANIA
From 29-JUN-19 16:25:00 to 29-JUN-19 16:25:00 (EST-5)
Location: OSBORNE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

A county 911 dispatcher reported that a tree was down and partially blocking State Route 65.

Hail in JEFFERSON, PENNSYLVANIA
From 29-JUN-19 16:40:00 to 29-JUN-19 16:40:00 (EST-5)
Location: CORSICA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Thunderstorm Wind in WESTMORELAND, PENNSYLVANIA
From 29-JUN-19 18:46:00 to 29-JUN-19 18:46:00 (EST-5)
Location: CRISP
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Social Media

A social media user stated that trees were downed between Stahlstown and Ligonier.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 29-JUN-19 19:08:00 to 29-JUN-19 19:08:00 (EST-5)
Location: GLENNES HGTS
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A county 911 dispatcher reported that trees were blown down along Redds Mill Road in Fallowfield Township.