A flash flood watch was in effect in Central Maryland until 2 a.m. Thursday after several rounds of thunderstorms hit the area.
A severe thunderstorm watch was in effect until midnight. BWI Marshall Airport reported 0.35 of an inch of rain between midnight and 2 a.m.
A severe thunderstorm warning for parts of Harford County, including Edgewood, Aberdeen and Havre de Grace, expired at 1 a.m.
A flood warning was issued in central Frederick County and northwestern Carroll County after radar indicated heavy rain of 1 to 1.5 inches had fallen.
Flooding is ongoing or expected to begin shortly in the warned area,” read the National Weather Service alert, which warned residents to avoid driving on flooded roads.
The National Weather Service also issued a coastal flood advisory for Baltimore City and the shorelines of Anne Arundel and Baltimore counties, warning that stormy weather and high tides could create flooding in low-lying areas, with up to 6 inches of inundation.
Areas like the end of Thames Street and the promenade near the Inner Harbor’s dragon boat dock in Baltimore and City Dock in Annapolis could be underwater, according to the National Weather Service advisory issued Wednesday afternoon.
Severe storms were possible in the Baltimore area before 2 a.m. Thursday, fueled by an approaching cold front, according to the weather service. The storms could include damaging wind gusts, isolated flooding, isolated hail and a tornado, weather service forecasters say. A forecast for Baltimore indicated that wind gusts could reach 18 mph during the repeated storms beginning Wednesday night.
In Baltimore, showers were likely to continue overnight and into Thursday, according to a weather service forecast. But it’s likely the day will gradually become clear and give way to a sunny weekend with high temperatures in the 80s.