Federal offices are closed in Washington D.C. Monday amid a daytime snowstorm expected to leave three to seven inches of snow on the nation’s capital. The National Weather Service (NWS) calls for heavy snow in the area Jan. 3, mainly before 2 p.m. and has issued a winter storm warning for the Baltimore/Washington, D.C. region, which will remain in effect until 4 p.m. ET. The agency also predicts winds from 14 to 16 mph with gusts up to 31 mph and a high around 33 degrees Fahrenheit. A total of 222 flights at Reagan National Airport are cancelled Monday, with 146 cancellations at Baltimore/Washington International Airport, according to FlightAware.com. The Office of Personnel Management (OPM) announced on Sunday evening that all federal offices in the Washington D.C. area would close Monday. Emergency employees and telework employees will continue to work, according to OPM. The White House announced it is cancelling …