Federal Offices in Washington Close at 1 p.m. Over Winter Storm

The Lincoln Memorial (L), Washington Monument (C) and US Capitol (R) are seen on the National Mall above Washington on Oct. 17, 2012. AFP/Saul Loeb/Getty Images

Federal offices in Washington closed at 1 p.m. ET due to an expected winter storm on Tuesday, said the Office of Personnel Management in an alert.

All employees are required to leave their offices four hours before their normal departure time and can leave no later than 1 p.m., the office said on its website.