Okinawa Islands, Japan

A magnitude 6.4 earthquake has struck the southern Okinawa Islands in Japan. NHK, Japan’s public broadcaster, said a Tsunami warning has been issued. The quake occurred at 10:28:39 PM local time.

Okinawa Earthquake: Magnitude 6.4 Quake Rocks Okinawa Islands,Tsunami Warning

The 6.4 magnitude earthquake that shook the Okinawa Islands region of Japan today was downgraded to a 6.3 by the USGS. A Tsunami warning has been issued for the area by Japan’s Meteorological Agency.

The temblor’s epicenter was about halfway between Taiwan and Okinawa.

The earthquake hit 70 miles east of the Ryukyu Islands and about 200 miles SW of Okinawa. It had a depth of 22.3 miles.

There are currently no reports on damage or injuries.

Japan sits on the ‘Ring of Fire’ surrounding the Pacific Ocean, is prone to earthquakes but high building standards and regular drills mean that casualties are often minimal.

The Tsunami warning is for the coastal areas on the southernmost part of Japan.

This is a developing story and will be updated.

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Details from USGS

Magnitude 6.3

* Monday, October 04, 2010 at 13:28:39 UTC
* Monday, October 04, 2010 at 10:28:39 PM at epicenter
* Time of Earthquake in other Time Zones

Location 24.286°N, 125.305°E
Depth 35.9 km (22.3 miles)
Distances 115 km (70 miles) E of Ishigaki-jima, Ryukyu Islands, Japan
320 km (200 miles) SW of Naha, Okinawa, Japan
350 km (220 miles) E of Su-ao, Taiwan
1875 km (1170 miles) SW of TOKYO, Japan
Location Uncertainty horizontal +/- 8.9 km (5.5 miles); depth +/- 17.2 km (10.7 miles)
Parameters NST= 51, Nph= 51, Dmin=900.4 km, Rmss=1.15 sec, Gp= 32°,
M-type=teleseismic moment magnitude (Mw), Version=6

* USGS NEIC (WDCS-D) This event has been reviewed by a seismologist.

Event ID us2010bzat Detailss