The phenomenon confused weather agency officials, as tide level changes were only a few dozen centimeters at some observation points and they changed too quickly for a tsunami.
The eruption of an underwater volcano off Tonga on Jan. 15 that caused tsunami waves of up to around 1 meter to hit parts of Japan s coast stumped weather experts, as volcanic eruptions are said to rarely cause a rise in tide levels.
The phenomenon confused weather agency officials, as tide level changes were only a few dozen centimeters at some observation points and they changed too quickly for a tsunami.
The eruption of an underwater volcano off Tonga on Saturday that caused tsunami waves of up to around 1 meter to hit parts of Japan's coast stumped weather experts, as volcanic eruptions are said to rarely cause a rise in tide levels. Hunga Tonga-Hunga Ha'apai, an underwater volcano located about…