Heavy rains and high winds are battering Guam and the Northern Marianas ahead of the arrival of a "very dangerous" storm that could cut power supplies for weeks or months.

Residents of Guam and the Northern Marianas prepare as a projected super typhoon approaches the U.S. Pacific islands.

Guam and Northern Marianas brace for Super Typhoon Bavi as forecasts warn of category-five strength winds, dangerous storm surge and widespread damage.