Japanese authorities have predicted the arrival times of tsunamis across different regions, with waves expected to reach a maximum height of 1 meter. The information is critical for those residing in coastal regions and for emergency services who need to plan and respond accordingly. Residents are advised to heed instructions from local authorities for their safety.

In Japan, due to its geographical location in the Pacific 'Ring of Fire', tsunamis are a fairly regular occurrence and public readiness for such events is a societal expectation. The values of safety, timeliness, respect for nature, and community are paramount during these times.

In contrast, many parts of the US and the EU are not typically vulnerable to tsunamis to the same extent, and thus their relative preparedness and public messaging may not be as developed as in Japan.