Flash Flood in Northumberland County, Pennsylvania

Flash Flood July 9, 2023 · Northumberland County, Pennsylvania

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Heavy rainfall estimated around 3 inches caused flash flooding east of Sunbury, with emergency responders conducting a water rescue on Plum Creek Road.

The wider storm

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.

Began near Seven Pts (40.8485, -76.7352).

Source: NOAA Storm Events Database, event 1107100. Narratives are written by the National Weather Service forecast office that issued the report.

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