Parts of the eastern United States remain largely paralysed for a third day by some of the heaviest snowfalls in decades.
Transport links in Washington DC and surrounding states have been severely disrupted, More than half a million homes are without power.
Federal government offices and most schools are shut.
Washington, Virginia and Maryland have declared emergencies, allowing them to mobilise the National Guard.
The storm has disrupted transport from West Virginia to southern New Jersey.
Some parts of Washington experienced up to 81cm of snow, one of the heaviest snowfalls in decades. A record 91cm of snow fell in Maryland.
More blizzards are forecast on Tuesday.