The shadow chancellor, Ed Balls, has responded to the revised GDP figures. He said:
"It's very worrying news that the economy shrank even more than we thought at the end of last year. And these revised figures also show that since George Osborne's spending review our economy has flatlined and not grown at all.
"This slow growth and rising unemployment means the Government is set to borrow an extra £150 billion to pay for the cost of economic failure."
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Guillier conceded a "severe defeat" defeat to his supporters as the result came in.
The outage struck Hartfield-Jackson Atlanta International Airport at around 1pm local time, stopping all outgoing flights.
It will be a chilly day for many parts with the highest temperatures, about 10 Celsius (50F) in the far northwest.