20 February 2015
Last updated at 16:37
Bitterly cold temperatures have continued for a second day in the eastern half of the US.
A number of record lows were broken on Thursday, including in Washington, Pittsburgh and Baltimore. Midwest temperatures dropped as low as -40C.
The cold has been blamed for at least 19 deaths, many in Tennessee where temperatures were far lower than usual.
Forecasters say some areas will see sleet and freezing rain as temperatures warm up slightly over the weekend.
Ontario and parts of Quebec were also under extreme cold warnings – with temperatures dropping to -25C in Thunder Bay and -21C in Ottawa on Friday.
In Toronto, a three-year-old boy died on Thursday after being lost for hours wearing only a T-shirt, nappy and boots.
Elijah Marsh was found a few hundred metres away from his home in -19C temperatures but died in hospital.
Elijah Marsh died after being outside in -19C temperatures in Toronto
Tourists try to stay warm on the Staten Island Ferry
The extreme cold has also frozen parts of the Hudson river in New York state and much of Lake Erie and Lake Michigan.
Chicago reopened its schools on Friday after closing on Thursday as wind chills made outside feel like -34C.
- Ronald Reagan National Airport, outside Washington DC, -14C. Previous record, 1896
- Baltimore-Washington Airport, -17C. Previous record, 1979
- New York City’s Central Park, -16C. Previous record, 1950
- Pittsburgh, -21C. Previous record, 1934
About 3,000 people were still without electricity in Tennessee on Friday down from 30,000. Eleven deaths are being blamed on the cold in the state, including six from hypothermia.
In western Pennsylvania, temperatures dipped to minus -28C, without the wind chill.
And further north in the mid-western state of Minnesota, temperatures dived into -41C.
Chicago closed schools solely because of the deep freeze
Unusually cold temperatures are spread across the US South – including Atlanta (seen here)
Tenneesse remains in a state of emergency after at least 11 people died because of the cold