Flash Flood — Allegheny, Pennsylvania

2025-07-14 · near North Braddock, Allegheny, Pennsylvania

Event narrative

Report of flooded roadway at the intersection of Yost Boulevard and Ardmore Boulevard.

Wider weather episode

A crossing mid-level shortwave supported development of showers and thunderstorms with 2000-3000 J/kg of MUCAPE and weak deep layer shear. Anomalously high PWAT values, even for July, up to 2.0 inches were more than sufficient for any thunderstorms to produce high rainfall rates and flash flooding.

View location on OpenStreetMap → (40.4153, -79.8467)

Source: NOAA Storm Events Database, event_id 1271551. Narrative written by the NWS forecast office that issued the report.