Flash Flood — Washington, Pennsylvania

2025-07-26 to 2025-07-27 · near Lagonda, Washington, Pennsylvania

Event narrative

Report of flooding over Brookhaven Avenue that is preventing entry and exit of mobile homes.

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 → (40.1385, -80.3048)

Source: NOAA Storm Events Database, event_id 1280557. Narrative written by the NWS forecast office that issued the report.