The National Weather Service of Pittsburgh confirmed a downburst came through McDonald around 1:30 p.m. An afternoon of numerous thunderstorm warnings gave way to a Flood Advisory for Allegheny County in the evening hours, but that expired at 7:30 p.m. In Allegheny County, the South Hills was also hit hard with damage. They saw flash flooding, and high winds brought down trees and power lines.
McDonald in northern Washington County may have seen the worst of the weather. The NWS said on their Twitter account that a downburst brought down numerous trees in the area.
In other areas, trees were reported down in various places from Murrysville to Export to Harrison City to Muddy Creek Township. Flash flooding caused problems in the City of Washington. Also, a home on Mount Washington was struck by lightning. Thankfully, it didn’t cause any major damage.