ANCHORAGE, Alaska (AP) - A magnitude 6.5 earthquake has been recorded in waters off Alaska's remote Aleutian Island region, where a 7.0 quake hit just last week.
The Alaska Tsunami Warning Center says there is no danger of a tsunami from Tuesday afternoon's quake.
The U.S. Geological Survey says the quake was centered about 50 miles south-southwest of the tiny community of Atka, Alaska. Scientists say earthquakes are very common in the area.
Dozens of aftershocks have been recorded since Friday's big quake.
There have been no reports of damage or injuries.
Strong quake shakes Tokyo area; no damage seen
A strong earthquake has shaken the Tokyo area and eastern Japan, though no injuries or damage was immediately reported.
The Japan Meteorological Agency said the quake early Wednesday registered a magnitude of 6.9 but was centered offshore near Torishima, part of the Izu Islands about 600 kilometers (370 miles) south of Tokyo.
Despite the remoteness of the epicenter, tremors were felt from the north of the main island of Honshu to the west. In Tokyo, buildings swayed for several moments.
The national broadcaster NHK said some train lines stopped briefly for safety checks as a precaution. No tsunami alert was issued.
The U.S. Geological Survey measured the quake at 6.5 magnitude and said it was 404 kilometers (251 miles) deep.