The National Weather Service (NWS) reports they are monitoring 3 weather related threats to the DC area starting this afternoon and into the night; high winds, a line of thunderstorms, and rainfall accumulations.
The NWS predicts wind gusts around 35-40 MPH starting in the early afternoon hours. The NWS is also monitoring threats of a line of thunderstorms approaching the District of Columbia from the west which is expected to reach the DC area between 7 and 10 PM. The storms have the potential to produce heavy rainfall and wind gusts up to 70 MPH. The National Weather Service reports this line of thunderstorms is fast moving and will last around 15 to 20 minutes with residual rainfall immediately following. The DC area should expect up to 2 inches of rainfall.
Additionally, the NWS has issued a coastal flood advisory for the District of Columbia from 7PM this evening to 3AM tomorrow morning. At high tide (10PM) NWS expects the water levels to increase 2 feet above normal. This anomaly could cause minor shoreline inundation of areas along the tidal Potomac River, the southwest waterfront.
The DC Homeland Security and Emergency Management Agency (HSEMA) urge citizens and business owners to ensure that the drains and catch basins around their homes and business are clear to prevent any flooding. HSEMA is also coordinating with its partner agencies to mitigate the effects of the upcoming storm.