Tokyo Report

6.9 Magnitude Earthquake Strikes Off Japan, Triggering Tsunami Alert

The earthquake took place 32 miles off the Japanese mainland, in the Pacific Ocean.

6.9 Magnitude Earthquake Strikes Off Japan, Triggering Tsunami Alert
Credit: Google Earth

Early Tuesday morning at 5:59 a.m. local time, a 6.9 magnitude (initially reported as 7.3 magnitude) earthquake struck off the eastern coast of Japan’s main island of Honshu, near the Tohoku region. The quake triggered a tsunami alert for the Miyagi and Fukushima prefectures.

According to the U.S. Geological Survey, the quake took place roughly 32 miles from the Japanese mainland at a depth of 18 kilometers.

According to the Japan Meteorological Agency, which monitors the country’s frequent earthquakes and associated tsunami activity, Fukushima prefecture would be the first to be hit by a tsunami, potentially up to 3 meters in height.

The Agency issued advisories for Iwate, Miyagi, Ibaraki prefectures, and parts of Aomori and Chiba prefectures.

“Evacuate immediately from coastal regions and riverside areas to a safer place such as high ground or an evacuation building,” the Agency noted in a warning to residents of the above areas.


Source: Japan Meteorological Agency

The quake’s reported epicenter is roughly 80 miles south of the great 2011 Tohoku earthquake, which was a considerably more powerful magnitude 9.1 earthquake.

The resulting tsunami devastated parts of Tohoku’s Iwate prefecture and lead to the nuclear accidents at the Fukushima Daiichi Nuclear Power Plant.