HALIFAX, Nova Scotia (AP) — Strong rain and winds are lashing the Atlantic Canada region as Fiona hits as a powerful post-tropical cyclone. Canadian forecasters are warning it could be one of the most severe storms in the country’s history. Fiona made landfall in Nova Scotia before dawn Saturday after transforming from a hurricane into a post-tropical cyclone. Forecasters caution that despite the change, Fiona still could have hurricane-strength winds and will bring drenching rains and huge waves. More than 500,000 customers in Atlantic Canada are affected by outages. Ocean waves pounded the town of Port Aux Basques on the southern coast of Newfoundland, where entire structures were washed into the sea. Mayor Brian Button says that people were being evacuated to high ground as winds knocked down power lines.