Forecasters say Sandy has regained hurricane strength packing sustained winds of 120-kilometres per hour.
The National Hurricane Center had downgraded Sandy to a tropical storm just hours earlier.
This is a monstrous storm, with hurricane-force winds recorded as far as 160-kilometres away from its eye.
Forecasters say it could be wider and stronger than Irene, which caused more than 15-billion dollars in damage, and could rival the worst East Coast storm on record.
Tropical storm conditions could be felt in the Carolinas as early as this evening.
It will be early next week before eastern and southern Ontario, southern Quebec and Atlantic Canada feel the effects of the storm.