Flash Flood — Washington, Pennsylvania

2025-07-26 to 2025-07-27 · near Harts Mill, Washington, Pennsylvania

Event narrative

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

Wider weather episode

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.

View location on OpenStreetMap → (40.1100, -80.2000)

Source: NOAA Storm Events Database, event_id 1280550. Narrative written by the NWS forecast office that issued the report.