Magnitude 7.0 Quake – OFF THE EAST COAST OF HONSHU, JAPAN
The following is a release by the United States Geological Survey, National Earthquake Information Center:
Earthquake Location: Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green. Map: USGS
An earthquake occurred about 125 km (75 miles) ENE of Iwaki, Honshu, Japan or about 130 km (80 miles) ESE of Sendai, Honshu, Japan or about 305 km (190 miles) NE of TOKYO, Japan at 8:39 PM MDT, Jul 18, 2008 (Jul 19 at 11:39 AM local time in Japan). The magnitude and location may be revised when additional data and further analysis results are available. No reports of damage or casualties have been received at this time; however, this earthquake may have caused damage due to its location and size.
The mainshock was followed by a 5.3 aftershock. A tsunami warning was issued for sections of Japan’s eastern coast. However, only a small wave of about 20 cm was reported.
Japan sits atop the Eurasian, Pacific, Philippine and North American tectonic plates whose movements cause numerous earthquakes. The country experiences about 20 percent of the world’s major earthquakes of magnitude 6 or greater.