Tidal Flooding Overtakes Alexandria, Tidal Basin Amid Heavy Rain in DC Area

A storm system is causing significant coastal flooding and pushed bands of heavy rain into the D.C. area

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Significant coastal flooding hit the Washington, D.C., area Friday along with all-day rain that elevated the flood threat.

A coastal flood warning is in effect for D.C., Arlington, Alexandria and Falls Church until 2 p.m. Saturday.

Water rushed into low-lying areas including King Street in Old Town Alexandria and the Tidal Basin near the Jefferson Memorial ahead of high tide.

Reduced visibility and flooding are making travel on the roads difficult, and winds gusting up to 40 mph could blow around unsecured objects or knock down trees.

Heavy rain and strong winds are in Friday's forecast. News4's Shomari Stone reports on how the region is preparing for the risk of flooding.

A tree brought down power lines and damaged a home on Yuma Street in Upper Northwest D.C. about 10:20 a.m. A tree fell onto the George Washington Parkway north of Mount Vernon during the morning commute, blocking all lanes, an official said. No injuries were reported.

Rain began pouring over the region early Friday and will continue all day.

Up to 2 inches of rain could fall before 8 p.m. Friday, but more rain is possible for some areas that get hit by the heaviest bands.

Waves of rain, heavy at times, continued into the evening. Be ready for occasional showers into Saturday. 

Washington, D.C., Area Weather Radar

Anne Arundel County Schools and Calvert County Schools announced they would close Friday due to the weather, in addition to Baltimore County Public Schools.

Weather Watches, Warnings for D.C., Maryland and Northern Virginia

The National Weather Service is cautioning about flooding and wind. Here's a full list of weather alerts.

Coastal flood warnings are set for areas near the Potomac River and Chesapeake Bay into Saturday morning, including Anne Arundel, Calvert, Charles, Fairfax, Prince William, Stafford counties, plus Alexandria, D.C., Manassas and Manassas Park, the National Weather Service said.

When Will Coastal Flooding Peak?

The most impactful coastal flooding is expected during high tide.

High tide is expected to push the Potomac River in Georgetown and Alexandria into moderate flooding during the hour of 3 pm. Friday and 3 a.m. Saturday, Storm Team4 says.

You can track the current and forecasted water levels with the National Weather Service.

Once the high tide recedes, water levels will likely fall. For example, the Potomac River in Alexandria had moderate flooding of 4.58 feet overnight, then fell below minor flooding levels by 9 a.m.

D.C. Area Halloween Weekend Forecast

Sprinkles, drizzles and cloudy skies will stick around Saturday amid highs about 58° to 64°.

After this deluge, the Halloween forecast is a treat.

Sunday is set to be nice, with sunshine and highs in the 60s.

Next week will be quieter, with near-average temperatures to start the month of November.

Stay with Storm Team4 for the latest forecast. Download the NBC Washington app on iOS and Android to get severe weather alerts on your phone.

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