Typhoon Neoguri headed for the Japanese mainland on Wednesday after crossing to the southern Okinawa island chain, killing two people and leaving a trail of damage.  With gusts of up to 110 miles an hour (180km/h) the typhoon was forecast to hit the southern main island of Kyushu as early as Thursday before moving east along the Japanese archipelago, the national weather agency said.  Officials said Neoguri would bring heavy rainfall and warned of the risk of flooding and landslides after the storm which has weakened from a super typhoon forced half a million people to seek shelter in Okinawa on Tuesday.  Kyushu (which is next to the biggest island of Honshu, where major cities including Tokyo and Osaka are located) experienced heavy rain and strong winds. Authorities were considering an emergency alert for residents to seek shelter ahead of Neoguri's landfall.  By Thursday lunchtime, heavy rain brought in by the Typhoon had caused three fatalities, extensive damage and forced thousands to leave their homes.  A 12-year-old boy was killed in the central farming town of Nagiso after rocks and boulders swept away his home.  Neoguri, which first threatened Japan as a super typhoon, had weakened to a tropical storm by the time it came ashore but was still gusting at up to 126 kph (78 mph).