In the early morning of the 2nd, the Japan Meteorological Agency downgraded the "tsunami warning" issued for a large area along the Sea of Japan to a "tsunami warning" and called on coastal residents to continue to be vigilant. A 7.6-magnitude earthquake occurred on the Noto Peninsula in Ishikawa Prefecture, Japan on the afternoon of the 1st. The Japan Meteorological Agency predicted that the earthquake would trigger a tsunami with a wave height of 5 meters, and quickly issued a "major tsunami warning" for the Noto area. This is the first time the agency has issued a "major tsunami warning" since the "3.11" Japan earthquake in 2011.
Ten minutes after the earthquake, a tsunami with a wave height of more than 1.2 meters was observed in Wajima Port, Ishikawa Prefecture. Subsequently, tsunamis with wave heights of varying heights were observed in a large area of the Japanese archipelago from Hokkaido in the north to Kyushu Island in the south.
At 20:30 local time on the 1st, the Japan Meteorological Agency downgraded the "major tsunami warning" for the Noto area to a "tsunami warning". At 1:15 a.m. on the 2nd, the Meteorological Agency downgraded the "tsunami warning" issued for the Hokuriku region of Japan and the northern areas of Yamagata, Niigata and Hyogo prefectures to a "tsunami warning", and other areas along the Sea of Japan still maintained a "tsunami warning". The Meteorological Agency also called on residents in areas where the "Tsunami Warning" was issued to stay away from the coast and river estuaries.
The Japan Meteorological Agency estimates the tsunami wave height along the coast based on the size and location of the earthquake and issues warnings. According to the size of the tsunami, it is divided into "major tsunami warning", "tsunami warning" and "tsunami warning". When the maximum wave height is predicted to exceed 3 meters, a "major tsunami warning" can be issued. (over)