Maryland is participating in the Great Southeast ShakeOut earthquake drill on Thursday.
At 10:19 a.m., groups from here to Florida will practice what to do during and after an earthquake.
ShakeOut organizers recommend people "Drop, Cover and Hold On" — drop to their hands and knees to avoid being knocked over, cover their heads and necks, and, if possible, shelter under a table or desk and hold on.
In an earthquake, people are urged not to flee outside during shaking because windows and building facades can break and fall.
The last memorable earthquake to hit the region came Aug. 23, 2011, when a 5.8 magnitude temblor occurred near Mineral, Va., and was felt up and down the East Coast. In Baltimore, it caused damage to the Basilica and other older buildings.
A 3.6 magnitude quake occurred near Germantown in 2010, and shaking was felt as far as Baltimore and Annapolis. Other intense quakes occurred in the state in 1758 and 1883.
Maryland experienced 22 minor quakes from 1758 to 1987, but from 1990 to 1996, it experienced 35 small tremors, according to ShakeOut organizers.