For this phenomenon that seems to be somewhat "anti-alriative", the US earthquake experts explained that this is mainly because the area where the epicenter is located is relatively remote, and both are located in the mountainous areas with few people. Among them, the nearest major town is Ridge Crest, about 20 kilometers from the epicenter. Local witnesses said that the amplitude of the sway is not particularly large and lasted for about 30 seconds to 40 seconds.
It is reported that the epicenter was in the Mojave Desert in eastern California, also on the east side of the San Andreas fault. There are still many secondary fault zones near this large conversion fault, about 150 miles from downtown Los Angeles.