China Earthquake Network officially determined that at 23:29 on June 23, a 7.4-magnitude earthquake occurred in Mexico. According to the video, the electric poles and trees in the street shook violently, and there was a loud noise in the distance. Residents took refuge in the street. After a strong earthquake in southern Mexico, the National Oceanic and Atmospheric Administration of the United States issued tsunami warnings to Mexico, Guatemala, El Salvador and Honduras.