The cardinal rule for evacuating from tsunami is to flee if a tremor is felt. However, tsunami can come even if there is no tremor. It is hoped that people will pay attention to the diverse range of natural disasters and renew their awareness of the threat they pose.
A massive underwater volcanic eruption occurred off the South Pacific island nation of Tonga at about 1 p.m. on Saturday. The Japan Meteorological Agency initially predicted that the eruption would not have a significant impact on distant Japan.
However, tsunami reached various locations in Japan on Saturday night. The agency hastily issued tsunami warnings for areas including the Amami Islands in Kagoshima Prefecture, and tsunami advisories for the entire Pacific coast. A rise in atmospheric pressure was also observed across the nation.
