Quick Quake Briefing: Recent M7.1 & M7.0 Aftershocks of the 2011 M9.1 Great Tohoku Japan Earthquake

Thursday, 8 July 2021

The EERI Northern California Regional Chapter and the EERI Learning from Earthquakes Program hosted a FREE webinar on two earthquakes that struck offshore Japan. The earthquakes are especially noteworthy because they are aftershocks occurring 10 years after the great 2011 Tōhoku earthquake. The February 13, 2021 Fukushima-ken Oki earthquake (M7.1) was a powerful and deadly quake that struck offshore west of Japan. The earthquake left one person dead, and at least 186 injured. It also inflicted modest damage across the Tōhoku and Kanto regions. The March 20, 2021 Miyagi quake (M7.0) also struck offshore. Power outages and some damage occurred in Miyagi prefecture. Sendai, the capital of Miyagi prefecture, suffered extensive damage from the great 2011 Tōhoku earthquake and tsunami. The Quick Quake Briefing featured two speakers from the Building Research Institute, National Research and Development Agency, Japan.