Typhoon Mawar weakens as it approaches Okinawa Islands.

Tropical Storm Mawar is heading towards Japan's southern Okinawa Islands, leading businesses and the airport to close and fishermen to batten down their boats in preparation. The storm could approach Okinawa's main island on Friday and bring powerful rainstorms to the region. Mawar largely skirted Taiwan and the Philippines after tearing across Guam last week.