Flash Flood in Washington County, Pennsylvania

Flash Flood July 26, 2025 – July 27, 2025 · Washington County, Pennsylvania

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Report of four vehicles stranded with water up to their doors near State Route 19 and Interstate 79 close to Little Tenmile Creek.

The wider storm

A weak trough and remnant outflows initiated afternoon thunderstorms. Initial single cell development across eastern Ohio ultimately congealed along propagating cold pools and surged southeast. A rich moisture environment was in place with 1000-2000 J/kg MLCAPE and near 30 knots of effective shear. The storms rolled into more favorable DCAPE, as high as 1200 J/kg, farther southeast, and repeated updrafts along outflow produced swaths of damaging wind.

Began near Harts Mill (40.1100, -80.2000).

Source: NOAA Storm Events Database, event 1280550. Narratives are written by the National Weather Service forecast office that issued the report.

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