MIAMI (WKOW) -- Tropical Storm Otto is gaining strength in the Atlantic.
The National Hurricane Center in Miami expects Otto to become a hurricane on Friday as the storm has sustained winds are near 70 mph.
On Thursday, Otto overturned cars, toppled power lines and washed out roads in the northeastern Caribbean.
Otto is moving away from the Caribbean islands, advancing across the open Atlantic toward the Azores archipelago off Portugal.
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