The franchise was announced as an expansion member of the North American Lacrosse League on August 26, 2012. This made the thunder the first professional indoor lacrosse team to call Baltimore home since the Baltimore Thunder left in 1999 to become the Pittsburgh CrosseFire, and the first professional lacrosse team of any kind to call the Baltimore region home since the Baltimore Bayhawks moved to Washington, DC in 2006.
Originally scheduled to start their first season against the expansion Rhode Island Kingfish on January 5, 2013, the first game for the Bombers was January 12, 2013 against the Boston Rockhoppers. The Bombers won this game in 17-16 in overtime.
On March 8, 2013 it was officially reported the Baltimore Bombers had folded. General manager and head coach, Hunter Francis noted that "...the economics didn’t work." This news initially broke on Laxdirt.com and later on their Facebook page. Just two days before, the Bombers posted about a giveaway at the game scheduled for March 10.