MIAMI - Powerful Hurricane Igor is moving west-northwest across the Atlantic on a track that could take the Category 4 storm toward Bermuda.

The National Hurricane Center in Miami says swells from Igor will begin affecting the Leeward Islands on Tuesday and reach into Puerto Rico and the Virgin Islands on Tuesday night and Wednesday. The swells could cause life-threatening surf and rip currents.

Igor's maximum sustained winds are near 215 kph and the storm is expected to remain a dangerous hurricane through Thursday.

Also in the Atlantic, Hurricane Julia has formed becoming the fifth hurricane of the season. Julia has maximum sustained winds Tuesday near 140 kph with some additional strengthening expected during the next day or so.