NEW : Okinawa 's weather agency issues an emergency warning for remote island area . Most powerful in 15 years . `` This is a beast , '' says The Japan Meteorological Agency Meteorologist Okinawa . It 's forecast to pass west of U.S. on Tuesday , sparing the islands its strongest winds . But Japan military officials warn the storm is very dangerous and urge personnel to prepare .
NEW : Okinawa 's weather agency issues an emergency warning for remote island area . `` This is a beast , '' says The Japan Meteorological Agency Meteorologist Okinawa . It 's forecast to pass west of U.S. on Tuesday , sparing the islands its strongest winds . But Japan military officials warn the storm is very dangerous and urge personnel to prepare .