
The National Weather Service has issued a Coastal Flood Watch for Alexandria, Arlington and D.C.
The Coastal Flood Watch will go into effect from midnight to 7 a.m. on Saturday (April 29).
NWS forecasts a 100% chance of rain Friday night, and says to expect up to one foot of “inundation above ground level” in low-lying areas due to tidal flooding. The weather service predicts a 60% chance of rain after 2 p.m. Saturday, and an 80% chance of rain all day Sunday.
“Water is expected to approach buildings near King Street and Union Street (in Old Town),” NWS said in the advisory. “Tides two-and-a-half feet above normal (are expected).”
Alexandria’s Potomac River waterfront in Old Town is prone to flooding, and high tide is at around 2:30 p.m. and 3:30 a.m.
“If travel is required, allow extra time as some roads may be closed,” NWS advised. “Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.”
Seasonable conditions are expected today, but a soaking rain will arrive late tonight into Friday. More unsettled conditions will continue through the weekend. pic.twitter.com/1xG5aAWGb9
— NWS Baltimore-Washington (@NWS_BaltWash) April 27, 2023
While most of the day will be dry, a slow moving cold front pushes through this afternoon & evening. Expect scattered showers with a rumble of thunder also possible. Eventually a pair of systems are set to impact the area late Thu-Fri & late this weekend. #MDwx #DCwx #VAwx #WVwx pic.twitter.com/GAJiJwD7o2
— NWS Baltimore-Washington (@NWS_BaltWash) April 26, 2023