The storm is expected to drop heavy snow and create treacherous conditions, including freezing rain and sleet Tuesday.
Meteorologists called it a 'crazy busy' season, due in part to unusually warm ocean temperatures.
Helene became a tropical storm Tuesday in the western Caribbean Sea and caused flooding in the Cayman Islands.
Hurricane Beryl has been downgraded to a tropical storm after sweeping into Texas as a Category 1 storm early Monday morning.
Texas officials urged coastal residents to brace for a looming hit by Beryl, which was a tropical storm on Saturday but was expected to regain hurricane strength.
An average Atlantic hurricane season produces 14 named storms, seven of them hurricanes and three major hurricanes.
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