Flash Flood — Northumberland, Pennsylvania

2023-07-09 · near Sunbury, Northumberland, Pennsylvania

Event narrative

Heavy rainfall estimated around 3 inches led to the closure of Brush Valley Road between Schock and Tressler roads in Rockefeller Township due to flash flooding.

Wider weather episode

Showers and thunderstorms developed in a warm and humid airmass over central Pennsylvania with moderate CAPE and very little CIN ahead of an approaching cold front. A few of the storms produced sporadic wind damage, and the widespread nature of this activity allowed the event to evolve into a flash flooding threat as well.

View location on OpenStreetMap → (40.8318, -76.7983)

Source: NOAA Storm Events Database, event_id 1107097. Narrative written by the NWS forecast office that issued the report.