MIAMI (CBSMiami) –Tropical Storm Alberto has been downgraded to a tropical depression Monday night as it continues to move away from the U.S. coastline.

At 11 p.m. Monday, the center of the storm was located about 245 miles east-southeast of Charleston, S.C. Alberto’s maximum sustained winds weakened to 35 mph as it moved to the east-northeast at around 13 mph.

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Alberto is earliest tropical storm to form in a decade, but it’s not proving to be much a threat.

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The National Hurricane Center forecasts that Alberto will take a turn northeast on Monday as it picks up speed into Tuesday.  There are no watches or warnings in effect.

The center of the storm is expected to stay offshore of the Georgia and Carolina coasts.  Some more weakening is expected over the next 48 hours.

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