Hurricane Erin's higher tides and big waves are battering much of the East Coast, with the huge storm prompting the expansion of tropical storm and coastal flooding advisories Wednesday.

Hurricane Erin neared North Carolina’s Outer Banks on Tuesday and threatened to whip up wild waves and tropical force winds.

While the hurricane is not anticipated to make landfall in Canada, coastal areas are still likely to face effects such as high winds and rough surf as the storm approaches the Atlantic provinces on Fr...