Flash Flood — Allegheny, Pennsylvania

2025-07-16 · near Clairton, Allegheny, Pennsylvania

Event narrative

Report stating that North 3rd Street is flooded and impassable.

Wider weather episode

A crossing cold front and weak shortwave passage spawned of scattered clusters of thunderstorms in an environment with 1500-2000 J/kg MLCAPE, >1000 J/Kg DCAPE, and weak deep layer shear. Some storms were severe with damaging wind.

View location on OpenStreetMap → (40.3036, -79.8861)

Source: NOAA Storm Events Database, event_id 1278106. Narrative written by the NWS forecast office that issued the report.