Effects of Hurricane Sandy in Maryland and Washington, D.C. Effects of Hurricane Sandy in Maryland and Washington, D.C. The effects of Hurricane Sandy in Maryland and Washington, D.C. included tropical storm force sustained winds with isolated gusts to hurricane force, plus significant mountain snow and coastal flooding. On October 26, Washington, D.C. Mayor Vincent Gray declared a state of emergency. That same day the governors of Pennsylvania, Maryland, and Virginia also declared states of emergency in preparation of the approaching storm. The United States Office of Personnel Management announced federal offices in the Washington, D.C. area would be closed to the public on October 29–30. In addition, Washington, D.C.,
Harmony Hall (Fort Washington, Maryland) stage plays, art exhibits, arts classes, scout meetings, and other cultural programs. The building was originally an elementary school. Harmony Hall (Fort Washington, Maryland) Harmony Hall, located in Fort Washington, Maryland, is managed by the United States National Park Service as part of the National Capital Parks-East system. It has been a National Park Service site since 1966. Harmony Hall is a -story Georgian country house built of red brick during the eighteenth century. It is surrounded by of land on Broad Creek, a Potomac River tributary. The house was built circa 1769 by Enoch Magruder. After his death, the