Oliwa passed south of Wake on September 6, where it caused heavy rains but no damage. On September 7, Oliwa started a period of rapid strengthening, becoming a typhoon September 8 and a Super Typhoon 8 hours later. Oliwa stayed at that intensity for over two days. While still a strong super typhoon, Oliwa passed near the Northern Marianas Islands. It then started weakening as it curved towards Japan. It made landfall as a minimal typhoon September 16. It quickly dissipated later that same day. Oliwa caused "damage and several fatalities" in Japan. 