Here's the latest forecast on Tuesday, Aug. 4.
Tropical Storm Isaias is expected to batter the region with a torrent of rainfall and damaging winds on its trek up the East Coast.
Isaias regained hurricane strength Monday evening as it heads toward the Carolinas. Expect strong winds and heavy rainfall to make their way to the Mid-Atlantic overnight.
Here's a full list of weather alerts.
Crews in the region are stacked sandbags, cleared debris from drains and put tree-removal teams on standby Monday.
D.C. and surrounding counties in Maryland and Virginia are under a tropical storm warning. Tropical-storm force winds with gusts up to 45 mph are expected within 36 hours.
Heavy downpours dumping 3 to 6 inches of rain are expected to have a major impact around the Beltway.
A flash flood watch includes the D.C. area from Interstate 95 to the coast from Monday evening until Tuesday evening.
Weather
Latest weather forecast, live radar and weather maps for Washington, D.C., Maryland and Virginia
Bands from Isaias will arrive in the D.C. area overnight. Isaias is expected to track into the Chesapeake Bay on Tuesday afternoon.
On Tuesday, Isaias will cause rain all day with times of storms and heavy downpours. Flash floods, heavy downpours and damaging winds could knock out power or inhibit travel.
A coastal flood warning goes into effect for D.C. at 4 p.m. Tuesday. The National Weather Service says the unprotected area on the Southwest Waterfront at
the DC Seafood Market is expected to flood. Water is also expected to
approach parts of the Hains Point Loop Road.
In anticipation of the storm, D.C. is closing all meal and grocery distribution sites and COVID-19 testing sites, including at fire stations, on Tuesday.
Isaias is now expected to bring more intense wind around 25-35 mph, with gusts up to 45 mph, to the region, the latest update from the National Weather Service indicates.
Moderate coastal flooding is also possible at times of high tide Tuesday as Isaias makes its closest approach to the area.
Monday will be your best opportunity to prepare for the storm's more serious potential impacts.
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In case of power outages, make sure you have on hand non-perishable food and enough drinking water to last a few days. Other emergency items to have include extra medication, face masks and hand sanitizer. Charge up your devices early and know where to find flashlights and candles.
You should also secure any loose objects outside your home, such as lawn furniture.
Remember, never drive into a flooded roadway.
