If a major earthquake strikes the “Nankai Trough” off middle and western Japan’s Pacific coast, the ensuing tsunami could overlook two to three times superior than formerly predictable, according to an authority control panel statement on March 31,2011.

The board understood a magnitude-9.1 temblor — close up to the equal force as the Great East Japan Earthquake of March previous year — and set collectively most harm estimations based on the most recent systematic data.

The result of an earthquake calculating a high-6 on the Japanese 7-point power scale and devastation to 395 metropolises in 21 prefectures — above five times better than was predictable in a 2003 revision. Furthermore, if the quake beat at high-tide, the ensuing tsunami would top 20 meters when they crashed into 23 municipalities in the Tokyo islands and Shizuoka, Aichi, Mie, Tokushima and Kochi areas. The main anticipated wave, at 34.4 meters high, would strike the town of Kuroshio, Kochi region.

Of particularly severe memo in the approximations is the highest 21-meter-high tsunami expected for Chubu Electric Power Co.’s Hamaoka nuclear power plant in Omaezaki, Shizuoka region. Following the meltdowns at the Fukushima No. 1 nuclear plant — activated when backup creators powering the reactors’ cold schemes were swamped by tsunami — Chubu Electric began construction an 18-meter-tall, 1.6-kilometer-long tsunami breakwater to safeguard the Hamaoka plant.

The predictable tsunami, though, would get more than the fence and marsh the station. Apparently, Chubu Electric’s tsunami countermeasures require a strong change.