1975 February 04 11:36 UTC (local time 07:36 p.m.)
The earthquake caused more than 2,000 fatalities. There were many injuries. Extensive damage was reported in the Yingkou-Haicheng areas. Minor damage was reported in Seoul, South Korea. The quake was felt in Primorskiy Kray, USSR, and on Kyushu, Japan.
Chinese officials ordered the evacuation of Haicheng (population about 1 million) the day before the earthquake. In the preceding months, changes in land elevation and in ground water levels, and widespread reports of peculiar animal behavior had been reported. The increase in foreshock activity triggered the evacuation warning. It was estimated that the number of fatalities and injuries would have exceeded 150,000 if no earthquake prediction and evacuation had been made. The evacuation, along with the local style of housing construction and the time of the main shock, 7:36 p.m., saved thousands of lives.