PITTSBURGH (KDKA) — Severe weather is moving through western Pennsylvania.

On Tuesday, the National Weather Service issued a flash flood warning for Allegheny, Washington and Beaver counties until 9 p.m.

The NWS says the warnings are for west-central Allegheny County, northern Washington County and south-central Beaver County.

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Earlier on Tuesday, the NWS issued a severe thunderstorm warning for parts of Washington, Beaver, Lawrence and Butler counties.

All the severe thunderstorm warnings have expired.

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Stay with KDKA for more on this developing story.