Typhoon Lan with heavy rains and destructive winds is expected to hit southern Japan on Sunday when the nation holds a national election. <br/><br/>Japan Meteorological Agency said the Category 1 typhoon, located east of the Philippines Friday morning and moving north, is expected to gain strength and hit Japan's southern island of Okinawa by Sunday. <br/><br/>In a statement, the agency said very heavy rain is likely in the Pacific side of western and eastern Japan from Saturday to Monday. <br/><br/>Local authorities in Okinawa have decided to move the voting date to Saturday for some remote islands. <br/><br/>According to the Tropical Storm Risk web site, the typhoon will likely strengthen to category 3, but weaken again by the time it brushes past Tokyo on Monday.