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Flash Flood — Washington, PA

Mar 28, 2020

An advancing warm front promoted heavy rain and thunderstorms during the afternoon of March 28th. Substantial breaks in the clouds south of the boundary, along with substantial warm air advection, resulted in around 1500 J/kg of mean-layer CAPE, and substantial (60kts+) effective shear was in place across the region. Hail growth increased into the evening as effective wind shear increased to 70kts over eastern Ohio.

Source: NOAA National Weather Service Storm Events Database (event 879385). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Washington, PA

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

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