The season's 16th typhoon, Sanba, is moving north toward the Korean Peninsula and is expected to reach Jeju Island from Sunday.

Currently Sanba is over waters southeast of Okinawa, Japan. It's forecast to reach the southern waters of Jeju early Monday and make landfall in Korea's southern coast that afternoon.

The typhoon will scatter rain nationwide from Sunday, and torrential downpours are expected in Jeju and the south coast in the early hours of Sunday.

Strong winds of up to 50 meters per second will blow in Jeju and the south and east coasts.

Sanba has developed into a powerful, supersize typhoon with central atmospheric pressure at 920 hectopascal and wind speed of 53 meters per second at its center.