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Flash Flood — Mercer, PA

Jul 20, 2023

The passage of a warm front during the morning of July 20th provided a moist and unstable air mass. A strong, progressive upper trough tracked southeastward from the Great Lakes, with an associated cold front crossing during the evening hours. Mixed-layer CAPE of up to 2500 J/kg, strong deep shear, and steep low and mid-level lapse rates were supportive of severe weather. Widespread reports of wind damage were received, mainly to trees. Some isolated urban flash flooding also occurred in Beav

Source: NOAA National Weather Service Storm Events Database (event 1125330). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Mercer, PA

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

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