A flash flood warning was issued by the National Weather Service in Mount Holly at 6:54 p.m. Wednesday, Aug. 13.

This warning applies to Burlington County in New Jersey, plus Bucks, Montgomery and Philadelphia counties.

"Most flood deaths occur in vehicles," the National Weather Service said in a statement. "Be aware of your surroundings and do not drive on flooded roads."

See weather radar for Burlington County

What are NWS meteorologists saying?

According to the NWS, Doppler radar and automated rain gauges showed signs of thunderstorms producing heavy rain at 6:54 p.m.

"Between 0.5 and 1 inch of rain has fallen. The expected rainfall rate is 1 to 2 inches in (one) hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expect

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