Water gushes down the steps of a home in the Waverly Hills neighborhood of Arlington, Va. on July 15.

Tyrone Turner / WAMU

This story was last updated at 5:38 p.m. 

Parts of Maryland, Virginia, and D.C. are under a flash flood watch only days after residents experienced heavy rains and flooding on local roads and bridges.

Most of the region remains under a flash flood watch through late tonight. The first wave of storms moved through the D.C. area around 2:45 p.m. This second wave has a much higher flood potential, and will affect the tail end of the rush hour commute. If you encounter high water, do not attempt to drive through it.

Experts at the National Weather Service estimate thunderstorms could bring rainfall totals that exceed two inches in some areas, which means residents in the region hardest hit by Monday’s storms could see flooding again.

No flash flood warnings have been issued yet.

Washington area airports have faced delays through this first wave of storms.

At Reagan National Airport and Baltimore/Washington International, some arriving flights were delayed an average of 2 hours and 15 minutes, with some departures delayed up to two hours.

At Dulles International Airport, arriving flights were facing similar delays while departures were delayed up to an hour and 45 minutes.

Monday’s rainfall broke a 148-year-old record for the date with 3.41 inches of rainfall collected at Washington National Airport—a month’s worth of rain dumped in a little more than an hour.

Dozens of people had to be rescued from their cars amid quickly rising floodwaters. The rains caused millions of dollars worth of damage, and Arlington County declared a state of emergency in the wake of the storm.

Officials in the county reported about 151 calls concerning damage to private property, storm drain backups, and flooding indoors and on roadways after storms. Arlington officials are continuing efforts to clean up and repair damage at local bridges and parks over the next several days.

This originally appeared on WAMU.

Filed Under: flooding, weather,