An advancing warm front promoted heavy rain and thunderstorms during the afternoon of March 28th. Substantial breaks in the clouds south of the boundary, along with substantial warm air advection, resulted in around 1500 J/kg of mean-layer CAPE,  and substantial (60kts+) effective shear was in place across the region. Hail growth increased into the evening as effective wind shear increased to 70kts over eastern Ohio.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:26:00 to 28-MAR-20 15:26:00 (EST-5)
Location: MC MURRAY
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were reported to be down on Brookwood Road.

Thunderstorm Wind in WESTMORELAND, PENNSYLVANIA
From 28-MAR-20 15:30:00 to 28-MAR-20 15:30:00 (EST-5)
Location: WEST NEWTON
Magnitude: 50.00 EG
Reported by: Trained Spotter

Roof and structural damage was observed.

Thunderstorm Wind in GREENE, PENNSYLVANIA
From 28-MAR-20 16:20:00 to 28-MAR-20 16:20:00 (EST-5)
Location: ROGERSVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: County Official

A tree was reported to be down on West Run Road, blocking the entire road.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 16:23:00 to 28-MAR-20 16:23:00 (EST-5)
Location: WEST BROWNSVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Along California Road, trees were reported to be blown down.

Flash Flood in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 15:48:00 to 28-MAR-20 21:15:00 (EST-5)
Location: BRENTWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Police were said to be responding on Brownsville Road, which was covered with water.

Flash Flood in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 16:19:00 to 28-MAR-20 21:15:00 (EST-5)
Location: BLAINE HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Simpson Howell Road was closed due to flooding.

Flash Flood in WESTMORELAND, PENNSYLVANIA
From 28-MAR-20 16:47:00 to 28-MAR-20 21:15:00 (EST-5)
Location: RILLTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

One man died when he was swept into a storm drain. The incident happened in Sewickley Township near Clay Pike. His wife told police that her husband had just finished clearing the drain of leaves and sticks when he got pulled down.

Hail in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 15:30:00 to 28-MAR-20 15:30:00 (EST-5)
Location: BETHEL PARK
Magnitude: 1.00 
Reported by: Social Media

One inch hail reported via social media.

Flash Flood in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 20:32:00 to 29-MAR-20 00:08:00 (EST-5)
Location: OPTION
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Route 837 was reported to be closed by flooding.

Flash Flood in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 23:00:00 to 29-MAR-20 00:00:00 (EST-5)
Location: LINDEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding was reported at the intersection of Linden Creek Road and Cheslock Road.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:23:00 to 28-MAR-20 15:23:00 (EST-5)
Location: CECIL
Magnitude: 1.75 
Reported by: Public

Hail reported via mping.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 16:19:00 to 28-MAR-20 16:19:00 (EST-5)
Location: WALKERTOWN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were reported to be blown down in West Pike Run Township.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:24:00 to 28-MAR-20 15:24:00 (EST-5)
Location: BISHOP
Magnitude: 1.00 
Reported by: Public

Hail reported via mping.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:25:00 to 28-MAR-20 15:25:00 (EST-5)
Location: STRABANE
Magnitude: 2.00 
Reported by: Social Media

Hail reported via social media; picture was provided.

Hail in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 15:25:00 to 28-MAR-20 15:25:00 (EST-5)
Location: SYGAN
Magnitude: 1.00 
Reported by: Public

Hail reported via mping.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:26:00 to 28-MAR-20 15:26:00 (EST-5)
Location: MORGANZA
Magnitude: 1.00 
Reported by: Public

Hail reported via Mping.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:28:00 to 28-MAR-20 15:28:00 (EST-5)
Location: MC MURRAY
Magnitude: 0.75 
Reported by: Public

Hail report via MPing.

Flash Flood in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 23:00:00 to 29-MAR-20 00:08:00 (EST-5)
Location: EAST WASHINGTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A vehicle was reported to be stuck in flood water.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 14:13:00 to 28-MAR-20 14:13:00 (EST-5)
Location: HICKORY
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were reported down on Burgettstown Road.

Hail in ARMSTRONG, PENNSYLVANIA
From 28-MAR-20 14:21:00 to 28-MAR-20 14:21:00 (EST-5)
Location: TEMPLETON
Magnitude: 1.00 
Reported by: Social Media

Hail reported via social media.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 14:59:00 to 28-MAR-20 14:59:00 (EST-5)
Location: ZELIENOPLE
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter sized hail reported in Zelienople, PA by a trained spotter.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 14:59:00 to 28-MAR-20 14:59:00 (EST-5)
Location: HARMONY
Magnitude: 1.00 
Reported by: Public

One inch hail reported through mping.

Flash Flood in BEAVER, PENNSYLVANIA
From 28-MAR-20 16:17:00 to 28-MAR-20 18:09:00 (EST-5)
Location: NEW SHEFFIELD
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Water was reported to be in homes and basements in Hopewell Township.

Flash Flood in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 16:52:00 to 28-MAR-20 18:09:00 (EST-5)
Location: INGOMAR
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Social Media

Subsidence due to flooding was reported at 1500 Ingomar Heights Road.

Flash Flood in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 16:20:00 to 28-MAR-20 21:15:00 (EST-5)
Location: OPTION
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: State Official

Many reports of flooded basements were received from Pittsburgh and other county locations.

Flash Flood in BEAVER, PENNSYLVANIA
From 28-MAR-20 18:30:00 to 28-MAR-20 20:30:00 (EST-5)
Location: WEST ALIQUIPPA
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A foot of water was reported in an apartment building near Aliquippa, causing families to be displaced.

Flash Flood in ARMSTRONG, PENNSYLVANIA
From 28-MAR-20 19:20:00 to 28-MAR-20 20:13:00 (EST-5)
Location: DAYTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Social Media

Numerous roads were reported to be flooded throughout Wayne Township.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:30:00 to 28-MAR-20 15:30:00 (EST-5)
Location: MC MURRAY
Magnitude: 1.50 
Reported by: Social Media

Hail reported in Peter Township area.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:30:00 to 28-MAR-20 15:30:00 (EST-5)
Location: DONALDSONS XRDS
Magnitude: 1.00 
Reported by: Public

Quarter sized hail reported from MPING.

Hail in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 15:30:00 to 28-MAR-20 15:30:00 (EST-5)
Location: BETHEL PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A report of quarter size hail was made on social media.

Hail in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 15:31:00 to 28-MAR-20 15:31:00 (EST-5)
Location: CLIFTON
Magnitude: 1.25 
Reported by: Trained Spotter

A trained spotter observed half dollar sized hail.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 15:35:00 to 28-MAR-20 15:35:00 (EST-5)
Location: CHICORA
Magnitude: 2.50 
Reported by: Trained Spotter

A trained spotter observed tennis ball sized hail.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 16:07:00 to 28-MAR-20 16:07:00 (EST-5)
Location: MUSE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A local citizen reported hail 2 inches in diameter.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 11:13:00 to 28-MAR-20 11:13:00 (EST-5)
Location: WEST LIBERTY
Magnitude: 1.00 
Reported by: Social Media

Quarter size hail reported through social media; picture provided.

Flash Flood in BEAVER, PENNSYLVANIA
From 28-MAR-20 16:56:00 to 28-MAR-20 18:09:00 (EST-5)
Location: WALL ROSE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

At the intersection of Babcock Blvd and Wildwood Rd, the road was completely under water due to flooding.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 11:15:00 to 28-MAR-20 11:15:00 (EST-5)
Location: FISHER HGTS
Magnitude: 1.00 
Reported by: Trained Spotter

A trained spotter reported quarter size hail.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 11:16:00 to 28-MAR-20 11:16:00 (EST-5)
Location: TIMBERLY HGTS
Magnitude: 1.00 
Reported by: Social Media

Hail reported through Facebook; picture provided.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 11:24:00 to 28-MAR-20 11:24:00 (EST-5)
Location: JAMISONVILLE
Magnitude: 1.00 
Reported by: Social Media

Hail reported via social media; picture provided.

Hail in ARMSTRONG, PENNSYLVANIA
From 28-MAR-20 11:45:00 to 28-MAR-20 11:45:00 (EST-5)
Location: MAHONING
Magnitude: 1.00 
Reported by: Social Media

Hail reported via social media.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 13:00:00 to 28-MAR-20 13:00:00 (EST-5)
Location: SLIPPERY ROCK
Magnitude: 1.00 
Reported by: Trained Spotter

Trained spotter reported mix of dime and quarter size hail.

Flash Flood in ARMSTRONG, PENNSYLVANIA
From 28-MAR-20 16:45:00 to 28-MAR-20 20:13:00 (EST-5)
Location: WEST KITTANNING
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 5.00K
Reported by: State Official

Widespread flooding and landslides occurred in Armstrong County, according to county 911 officials.

Flash Flood in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 22:30:00 to 28-MAR-20 23:55:00 (EST-5)
Location: VIENNA
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 1.00K
Reported by: Emergency Manager

An emergency manager reported a few roads were closed due to flooding, including Hicks Road and Lake Road.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 13:04:00 to 28-MAR-20 13:04:00 (EST-5)
Location: ARNANDALE
Magnitude: 1.00 
Reported by: Social Media

Hail reported via social media; picture provided.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 15:10:00 to 28-MAR-20 15:10:00 (EST-5)
Location: JEFFERSON CENTER
Magnitude: 2.50 
Reported by: Emergency Manager

Two and half inch hail reported by an emergency manager; picture provided.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:04:00 to 28-MAR-20 15:04:00 (EST-5)
Location: LANGELOTH
Magnitude: 1.75 
Reported by: Social Media

Hail reported via social media; video provided.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 15:11:00 to 28-MAR-20 15:11:00 (EST-5)
Location: JEFFERSON CENTER
Magnitude: 1.00 
Reported by: Public

Quarter size hail reported through mping.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:13:00 to 28-MAR-20 15:13:00 (EST-5)
Location: MC DONALD
Magnitude: 1.00 
Reported by: Social Media

Quarter sized hail reported via social media.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:15:00 to 28-MAR-20 15:15:00 (EST-5)
Location: MC DONALD
Magnitude: 2.00 
Reported by: Social Media

Hail reported via social media; dents were made on cars.

Hail in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 15:18:00 to 28-MAR-20 15:18:00 (EST-5)
Location: HICKORY
Magnitude: 2.00 
Reported by: Public

Two inch hail reported by a local citizen.

Hail in LAWRENCE, PENNSYLVANIA
From 28-MAR-20 13:13:00 to 28-MAR-20 13:13:00 (EST-5)
Location: ROSE PT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Mix of dime to quarter sized hail in Slippery Rock Township.

Hail in LAWRENCE, PENNSYLVANIA
From 28-MAR-20 13:26:00 to 28-MAR-20 13:26:00 (EST-5)
Location: BESSEMER
Magnitude: 1.25 
Reported by: Social Media

Hail reported via social media; picture provided.

Hail in LAWRENCE, PENNSYLVANIA
From 28-MAR-20 13:27:00 to 28-MAR-20 13:27:00 (EST-5)
Location: WALFORD
Magnitude: 1.00 
Reported by: Social Media

Quarter sized hail reported via Facebook West of Bessemer.

Hail in LAWRENCE, PENNSYLVANIA
From 28-MAR-20 13:31:00 to 28-MAR-20 13:31:00 (EST-5)
Location: WILMINGTON JCT
Magnitude: 1.00 
Reported by: Public

Hail reported via mping.

Hail in BUTLER, PENNSYLVANIA
From 28-MAR-20 14:04:00 to 28-MAR-20 14:04:00 (EST-5)
Location: BOYDSTOWN
Magnitude: 1.50 
Reported by: Social Media

Hail reported via social media.

Thunderstorm Wind in WASHINGTON, PENNSYLVANIA
From 28-MAR-20 14:06:00 to 28-MAR-20 14:06:00 (EST-5)
Location: ATLASBURG
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were reported to be blown down on Atlas Cherry Valley Road.

Flash Flood in WASHINGTON, PENNSYLVANIA
From 29-MAR-20 00:04:00 to 29-MAR-20 02:00:00 (EST-5)
Location: LABORATORY
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding was reported along West Chestnut and Washington Street. A vehicle was trapped in the water and the driver had to be rescued.

Flash Flood in BEAVER, PENNSYLVANIA
From 28-MAR-20 15:45:00 to 28-MAR-20 18:09:00 (EST-5)
Location: WEST ALIQUIPPA
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flooding and debris were reported along Chapel Road, with local creeks out of their banks.

Flash Flood in ALLEGHENY, PENNSYLVANIA
From 28-MAR-20 16:06:00 to 28-MAR-20 21:15:00 (EST-5)
Location: MT LEBANON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water was reported to be entering homes in Mount Lebanon.