April 6, 1650
Maryland General Assembly divided into an upper and lower house.
April 10, 1877
Three days of strong coastal storms caused heavy beach erosion.
April 13, 1926
Cape Henlopen Lighthouse collapsed after years of weather damage and abandonment.
April 15, 1964
The Chesapeake Bay Bridge Tunnel opened. It was named one of the 7 modern engineering wonders of the world.
April 17, 1990
Strong winds associated with heavy storms gusted to 75 mph in the Chesapeake Bay area of Virginia.
April 19, 1999
The second (parallel) span of the Chesapeake Bay Bridge tunnel opens for traffic.
April 19, 1774
The last colonial General Assembly was suspended in Maryland.
April 21, 1649
Religious toleration law enacted in Maryland.
April 24, 1987
Thunderstorms dumped up to seven inches of rain in Virginia over the course of three days.
April 28, 1788
The Maryland Convention was the 7th state to ratify US Constitution.
April 29, 1813
British take and destroy Frenchtown near Elk Landing (Elkton), Cecil County before heading to the Battle of Baltimore.
April 30, 1990
Thunderstorms moving over the Chesapeake Bay flooded U.S. Route 50 on Kent Island Maryland, with several inches of water. This caused a seventeen-mile long traffic jam.