A small tsunami wave hit Japan's northernmost island late yesterday after a major quake in the Kurile Islands triggered a full-scale tsunami warning for areas of northern Japan and Russia's Pacific coast.
Japanese media reported that a wave measuring about 40cm had come ashore at Nemuro, on the east coast of Japan's Hokkaido Island.
NHK public television in Japan said local authorities in Hokkaido had been bracing for a tsunami predicted at between 1m to 2m in height.
A lesser warning was issued for a wide swathe of the eastern coast of northern and central Honshu, Japan's main island, but for waves expected to be some 50cm at highest.
Hawaii, Alaska, British Columbia and the Northwest coast of America were also put on tsunami alert.
Both the Pacific Tsunami Warning Center in Hawaii and Japan's Meteorological Agency put the quake's intensity at 8.1. Its epicenter was deep under the Pacific Ocean roughly 1,700km northeast of Tokyo.