The tsunami warning issued by the Japan Meteorological Agency was the most serious on its warning scale; it was rated as a "major tsunami", being at least 3 metres (9.8 ft) high.
Japonya Meteoroloji Ajansı tarafından verilen tsunami uyarısı en yüksek seviyeydi, en az 3 m yüksekliğindeki bir "büyük tsunami" olarak nitelendirilmişti.