Typhoon Lan is expected to bring heavy rains and destructive winds to southern Japan on Sunday during the Lower House election, forcing officials in Okinawa to stage voting a day early on some remote islands.
The category 1 typhoon, located east of the Philippines on Friday morning and moving north, is expected to gain strength as it comes some 200 km (125 miles) east of Okinawa by Sunday, the Meteorological Agency said.
"It will likely rain very heavily in the Nansei island chain, in the Pacific side of western and eastern Japan from the 21st to 23rd. There is a chance it will rain violently in some regions," the agency said in a statement.