EUGENE, Ore. - A magnitude 6.9 earthquake struck off Fukushima in Japan on Monday, according to the U.S. Geological Survey.
"Damage due to tsunami waves is expected, " the Japanese Meteorlogical Agency said in a bulletin posted just before 6 a.m. Tuesday morning local time in Japan. "Evacuate immediately from coastal regions and riverside areas to a safer place such as high ground or an evacuation building. Tsunami waves are expected to hit repeatedly. Do not leave safe ground until the warning is lifted."
The agency said the waves would be 1 to 3 meters tall, about 3 to 10 feet.
USGS revised the initial estimate of the earthquake's power down from a 7.3 to a 6.9.
Another 5.4 quake struck in the same area about 10 minutes after the larger quake.
U.S. authorities do not believe there is a tsunami threat to Hawaii or the West Coast of the North America.
Fukushima prefecture is north of Tokyo and home to the nuclear power plant that was destroyed by a huge tsunami following an offshore earthquake in 2011.
That tsunami wave reached the U.S. West Coast. Debris that crossed the Pacific Ocean - including boats, docks, even a motorcycle - has washed up on Northwest beaches over the past few years.