the 25th anniversary of japan's deadliest air disaster, which killed over 500 people. relatives of the victims are commemorating the tragedy by climbing a mountain to visit the crash site. the japan airlines boeing 747 went down in the osutaka ridge in gunma prefecture north of tokyo on august 12th, 1985, killing 520 people on board. on early thursday morning bereaved family members and officials of the airline began scaling the mountain to mourn the victims. they'll place flowers on a mountain cenotaph for the victims. >> the mourning ceremony is to be held later in the evening. the relatives will offer a silent prayer for the dead at 6:56 p.m., the time the passenger plane crashed. >>> and now we take a look at the extended weather forecast with selected cities around the world. ♪ ♪ ♪ ♪ >>> we're closely following the markets today. in the tokyo foreign exchange market the dollar dipped temporarily below the 85-yen mark after regaining ground due to profit taking. now, the dollar is changing hands at 85.09-10. market sources say although some investors are selling the yen to lock in profits the dollar will likely remain weak against the yen due to lingering concerns over the u.s. economy. on t