TANKS AND STORMS: D.C. PREPARES FOR ARMY's 250TH BIRTHDAY CELEBRATION ON SATURDAY

Washington D.C. - Washingtonians can expect scattered thunderstorms and potential flooding as the nation's capital prepares to host a grand celebration of the U.S. Army's 250th birthday on Saturday.

According to 7News First Alert Chief Meteorologist Veronica Johnson, the stormy weather is expected to continue into the evening, with showers and thunderstorms developing in the afternoon. Johnson warned that isolated wind damage and instances of flash flooding are possible, especially in low-lying areas.

A flash flood warning has been issued for D.C., Montgomery and Prince George's counties in Maryland, and Arlington and Fairfax counties in Virginia until midnight Friday. A separate warning is also in effect until 12:15 a.m. in Orange and Spotsylvania counties in central Virginia.

The National Weather Service predicted that heavy rainfall could reach up to 3 inches within an hour on Friday night, causing "excessive runoff" that may lead to flooding of rivers, creeks, and other low-lying areas.

"We urge everyone to take necessary precautions to avoid flash flooding," said Johnson. "If you're planning to attend the army parade or any other event, it's a good idea to bring an umbrella or poncho."

Despite the weather forecast, Saturday looks set to be a hot and humid day in the D.C. area, with clouds developing throughout the morning and temperatures rising into the mid-80s in the afternoon.

Wet weather is expected to continue through Sunday, with scattered showers and storms possible at any point during the day. A flood watch has been issued for the region until 2 a.m. Saturday, underscoring the need for caution and preparedness.

With military vehicles set to roll into D.C.'s streets on Saturday, residents are advised to check the weather forecast closely before heading out.