Flash floods can happen at any time, making them unpredictable and hard to prepare for. Even the name “flash flood” implies that they can appear out of nowhere and cause all kinds of damage.

Tuesday is an Impact Day as rain showers with heavy downpours move through the Pittsburgh area. A flash flood warning has been issued by the National Weather Service for Allegheny, Washington ...

PITTSBURGH — A flash flood warning in Washington County has been extended until 11:30 p.m. Thursday. The warning for Allegheny County has expired. Thunderstorms brought heavy rain to Western ...

— Matthew Cappucci (@MatthewCappucci) June 14, 2025 Earlier: A Flash Flood Warning has been issued for Arlington and other parts of the immediate D.C. area.

A flash flood warning was issued by the National Weather Service in Green Bay at 2:42 p.m. on Sunday, June 29. This warning applies to Shawano and Waupaca counties. The NWS warns: "Turn around ...