Flash Flood — Susquehanna, Pennsylvania

2025-06-22 · near Great Bend, Susquehanna, Pennsylvania

Event narrative

Water was flooding Interstate 81 near Great Bend.

Wider weather episode

A mesoscale convective system (MCS) dropped southward across Central NY from eastern Ontario, moving into an environment with plenty of moisture and instability during the early morning hours. Torrential rainfall accompanied these storms and produced widespread flash flooding and small river flooding. Estimates of 3 to 5 inches, with locally higher amounts, fell mostly within a 6-hour period and affected portions of Northeast Pennsylvania.

View location on OpenStreetMap → (41.9700, -75.7400)

Source: NOAA Storm Events Database, event_id 1277309. Narrative written by the NWS forecast office that issued the report.