Latest update: 3pm
Nine people have now been reported killed in accidents as a result of the massive snowstorm hitting the eastern United States.
Seven states have declared emergencies and two feet of drifting snow has landed on parts of Washington.
Thousands of flights have been cancelled, including many transatlantic services operating from Irish airports.
Latest update: 8am
At least seven people have died in a massive snow storm that has hit the eastern United States.
Tennessee, North Carolina, Virginia, Maryland, Pennsylvania, the District of Columbia and New Jersey have already declared a state of emergency.
Thousands of flights to the eastern US have been cancelled.
This morning's scheduled services from Dublin by United Airlines to Newark, American Airlines to Philadelphia, Aer Lingus to New York and Delta's flight also to New York are affected.
A huge winter storm could leave parts of the US east coast under a record 3 feet of snow.
If forecasts prove accurate, the storm could rival the one in 1922 which left 71 centimetres of snow in Washington.
The Mayor of Washington DC - Muriel Bowser – has said emergency services should be the only people who are outside: “You don’t need to be on our roads so we are urging all residents and visitors to get off of the roads, find a safe place and stay there.”