The US National Weather Service has issued another winter storm warning for Washington DC as the capital remained largely paralysed after heavy snowfall.
A further 10 to 20 inches of snow were forecast to fall in Washington on Tuesday afternoon and Wednesday.
Forecasters said that the combination of snow and strong winds would make travel very hazardous.
Government offices and most schools were shut on Monday and power had yet to be restored to thousands of homes. There was continued disruption to transport links in the Mid-Atlantic region after many airports had closed.
A record 32.4in snowfall was measured at Dulles International Airport over the weekend, breaking the previous two-day storm record by almost 10in. Neighboring Maryland recorded 3ft of snow. In Philadelphia, 28.5in of snow fell during the storm, just shy of the record 30.7in during the January 1996 blizzard.
The National Weather Service is predicting the city will be hit by another 12-18in from Tuesday, which could make this winter the snowiest since Philadelphia started keeping records in 1884.
Electricity was cut to at least 300,000 homes as snow felled trees, and cut power lines across the region. Another 250,000 customers were hit by blackouts in Pennsylvania and New Jersey, the New York Times reported.
Even President Barack Obama fell victim to "snowmageddon", as locals - including the president - have dubbed it.
The latest falls come less than two months after a storm dumped more than 16in of snow in Washington.
And for your viewing pleasure.... meteorologist Jim Kosek.