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Flash Flood — Jefferson, PA

Jun 17, 2025

The stalled boundary began to lift north during the day on the 17th but remained the focus of diurnal convection. While the front did eventually shift off to the east on the 18th, additional storms were able to fire with the lingering moist airmass as an upper level disturbance approached.

Source: NOAA National Weather Service Storm Events Database (event 1278905). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Jefferson, PA

This event is one of many recorded floods in Jefferson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Jefferson County flood data →

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Flash Flood

Jefferson, PA · Jun 18, 2025

The stalled boundary began to lift north during the day on the 17th but remained the focus of diurnal convection. While the front did eventually shift off to the east on the 18th, additional storms were able to fire with the lingering moist airmass as an upper level disturbance…

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Flash Flood

Jefferson, PA · Jun 18, 2025

The stalled boundary began to lift north during the day on the 17th but remained the focus of diurnal convection. While the front did eventually shift off to the east on the 18th, additional storms were able to fire with the lingering moist airmass as an upper level disturbance…

Read the full account →