Date & time: Wed, 4 Sep 02:32:34 UTC
Local time at epicenter: Tuesday, September 03, 2013 14:32:34
Depth: 44.0 km
Epicenter latitude / longitude: 51.505°N / 174.814°W [Map]
Nearest volcano: Sergief (67 km)
Primary data source: USGS
A 6.5 magnitude earthquake has shaken Japan, with residents of the capital, Tokyo, reporting significant shaking on social media sites.
There have been no immediate reports of casualties, and local authorities say there is no risk of a tsunami.
The quake was given a preliminary magnitude of 6.9, with the USGS later grading it 6.5.
The quake struck at 0018 GMT at a depth of 404 kilometres (251 miles), the USGS said.
“The epicentre is in the Pacific, hundreds of kilometres (miles) south of Tokyo. We see no risk of a tsunami,” a spokesman for the Japanese weather agency said.
Fukushima operator TEPCO reported there were no new problems at the stricken nuclear plant.
The epicentre of the quake was near the Izu Islands, south of Tokyo.