weather alert

Significant Tidal Flooding, Heavy Rain Expected Friday

D.C., Alexandria and Annapolis will all experience flooding, the National Weather Service said

NBC Universal, Inc. Storm Team4 Chief Meteorologist Doug Kammerer has the forecast.

This story is no longer being updated. Go here for the latest forecast on Friday.

Weather forecasters say they're expecting one of the biggest tidal flood events in the past 10 to 20 years on Friday - and that, combined with heavy rain, could cause problems for the D.C. area into the weekend.

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

Calvert County Public Schools announced late Thursday schools will be closed Friday due to the weather.

Friday is set to be cool, windy and rainy, Storm Team4 Chief Meteorologist Doug Kammerer said. Wind gusts will reach 25-40 mph. Kammerer said about 1 to 2 inches of rain are expected, but some areas could get up to 4 inches. Flash flooding is also a concern.

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.

The National Weather Service flagged the shorelines of Washington, D.C., Alexandria and Annapolis as areas of concern.

The first drops of rain could arrive after midnight. Storm Team4 expects the heaviest rain around lunchtime Friday.

Flooding is a big concern, and travel could be dangerous by Friday evening.

A flood watch will be in effect in D.C. and parts of Maryland and Virginia on Friday morning and afternoon. The flood watch applies to areas including Arlington, Fairfax, Montgomery and Prince George’s counties. Here's a full list of weather alerts.

Coastal flood warnings are set for areas near the Potomac River and Chesapeake Bay from Thursday evening 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.

There’s a chance of showers Saturday amid cloudy, cool conditions and highs in the low to mid-60s.

But the Halloween forecast isn’t looking scary at all.

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.