On July 28, local time, after a 7.1 magnitude earthquake occurred in Kumamoto Prefecture, Japan, the Japanese government announced the establishment of a major disaster response headquarters, and a response headquarters meeting will be held later that day. According to the Japan Meteorological Agency, at about 16:27 local time on the 28th, a 7.1 magnitude earthquake occurred in Kumamoto Prefecture. The depth of the earthquake was about 10 kilometers. The Meteorological Agency also issued a tsunami warning. Afterwards, many more aftershocks occurred in Kumamoto Prefecture.

On July 28, local time, after a 7.1 magnitude earthquake occurred in Kumamoto Prefecture, Japan, the Japanese government announced the establishment of a major disaster response headquarters, and a response headquarters meeting will be held later that day. According to the Japan Meteorological Agency, at about 16:27 local time on the 28th, a 7.1 magnitude earthquake occurred in Kumamoto Prefecture. The depth of the earthquake was about 10 kilometers. The Meteorological Agency also issued a tsunami warning. Afterwards, many more aftershocks occurred in Kumamoto Prefecture.