The U.S. East Coast is preparing for a major snow storm that weather experts are calling “historic” even before any snow falls. The storm could produce blizzard conditions in Washington, D.C., Baltimore and New York City. At least 15 states expect heavy snow until Sunday. Weather officials expect between 30 and 90 centimeters of snow. Officials expect strong winds, ice and coastal flooding during the storm. Some cities and states, including Washington and Maryland, have declared states of emergency. Government leaders are asking the millions in the storm's path to be “better safe than sorry.” “Be [careful], stay home on Saturday unless you have to travel somewhere,” said Anthony Santino, a city official for Hempstead, N.Y. Residents of the nation's capital experienced winter weather earlier this week. Washington had barely 5 centimeters of snow Wednesday. But many drivers were stranded because of a thin layer of ice on the roads. Some people abandoned their vehicles in the middle and on the side of the road. Leading up to the weekend storm, supplies are difficult to find at hardware stores and grocery stores.