US, Japan Prepare for Tsunamis After Powerful Russian Earthquake

Tsunami Impact and Response - A tsunami, initially measured at 30-40 centimeters (approximately one foot), impacted the Tohoku region, the same area devastated in 2011 [2] - Japan's meteorological agency reported the tsunami initially hit Hokkaido, affecting the northern region and the Pacific coast, with warnings issued for most of the Pacific coast, anticipating waves up to 3 meters in height [1] - As the tsunami progresses along Japan's Pacific coast towards Tokyo, Nagoya, and Osaka, no significant damage or injuries have been reported [3] - If the tsunami remains under 50 centimeters, Japan is expected to avoid major damage, contrasting with the 2011 event that caused tens of billions of dollars in damage, significant loss of life, and the Fukushima nuclear disaster [4] Lessons Learned and Preparedness - Post-2011, nuclear power plants implemented changes, including suspending operations and constructing seawalls, addressing safety concerns related to above- and below-sea-level backup facilities [6] - Coastal areas, particularly in the Tohoku region, now feature signs indicating elevation above sea level (e g, 3 meters, 5 meters) to guide evacuation efforts [7] - Japan has implemented a warning system, utilizing TV broadcasts and fire brigades to alert residents and guide them to higher ground [9][10] Ongoing Risks and Aftershocks - Footage from Russia indicated structural damage due to the tsunami, highlighting the widespread impact of the event [11] - Due to the earthquake's magnitude, aftershocks are expected for several days, and tsunami warnings/advisories remain in place [12]