Water vapor over the U.S. at 12:45 p.m., Friday (NOAA)

UPDATE 3:20 p.m.: A coastal flood advisory has been added to the coastal flood watch. This new advisory runs from 3 a.m. to noon on Saturday. Tides could be 1 to 2 feet above their usual height, says the National Weather Service.

ORIGINAL: Flooding! Brace for a squishy, squelchy Saturday as an impressive storm system arrives in D.C. The rain is expected to be heaviest during the afternoon, and severe thunderstorms with damage-sowing winds are a possibility – keep current with the latest ABC7 forecast here.

There is a standing coastal flood watch for areas along the Chesapeake and the Potomac River during tomorrow afternoon and night. Southeasterly winds are helping push tides 2 to 3 feet above their average levels, setting the stage for moderate inland flooding. It’ll be a good day to give your new spring rain boots some action. Or your canoe, if you happen to live near King Street in Old Town.

There is also a flash flood watch tomorrow morning through the evening, although this danger is primarily west of the Blue Ridge mountains. The soil out there is already dripping with retained water from past rainfalls and probably won’t be able to handle this uber-wet storm, which is expected to spray 1 to 2 inches of rain on the D.C. region. 

While it’ll be a dismal day for D.C., the storm likely won't be as bad as it was last night in the South, where tornadoes killed nine people in Oklahoma and Arkansas.