Typhoon Khanun weakened slightly and hovered in the East China Sea on Friday, but it is still expected to approach Japan's Okinawa islands again, and even head for the main islands, making it what forecasters said was a "very unusual storm."

Khanun, which means "jackfruit" in Thai, has killed two people and currently has sustained winds of 126 kilometers per hour, with gusts up to 180 kph, the Meteorological Agency said.

The typhoon was almost stationary on Friday, as it has been for well over 12 hours, the agency said.