The National Weather Service issued the tornado watch for more than 15 counties, including the following: Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles, Dorchester, Harford, Howard, Kent, Montgomery, Prince George's, Queen Anne's, Somerset, St. Mary's, Talbot, Wicomico and Worcester. Baltimore City was also part of the watch area.
A tornado watch means conditions are favorable for thunderstorms that could produce a tornado.
Earlier in the day, the weather service issued a wind advisory for central and western Maryland, stating that a cold front would move through the area from the Allegheny mid-day that could bring thunderstorms and damaging wind gusts.
A dense fog advisory was in effect until noon in Cecil and Kent counties, where visibilities were limited Friday morning.