A powerful typhoon has poured heavy rains over Japan’s southern island of Okinawa and is aiming at the next island of Kyushu.

The severe storm is the second to hit the region in a week.

At least 28 people have been reported injured in Kyushu and Okinawa, where authorities on Sunday told 150,000 people to evacuate.

Typhoon Vongfong, packing winds of up to 180 kilometres per hour, has been downgraded from a “super-typhoon” and was on course to reach Kyushu by Monday.

Authorities issued landslide warnings and strong winds knocked out power lines, temporarily halting bullet train service for several hours on Kyushu.

Last week’s typhoon killed three US airmen who were washed out at sea in Okinawa, home to about half of the roughly 50,000 American troops stationed in Japan.