The Japanese meteorological agency is closely monitoring seismic activities, following indications of potential aftershocks. However, whether a formal announcement will be issued is still under investigation. Constant vigilance is necessary due to Japan's geographic location and history of earthquakes. The timeframe for these potential aftershocks is currently unknown.

In Japan, earthquake alerts are taken very seriously and are a part of everyday life. The country experiences a substantial number of earthquakes due to its location along the Pacific "Ring of Fire." The government and citizens are highly responsive to such warnings, with extensive plans and procedures in place to ensure public safety.

In the US and EU, earthquake preparedness varies significantly based on region. In areas prone to earthquakes, such as California, measures are similar to Japan, including building codes and emergency preparedness. However, other regions may not have the same level of preparedness due to a lower risk of earthquakes.