1976 Tangshan earthquake
At the 3:42 a.m., an earthquake measuring between 7.8 and 8.2 magnitude on the Richter scale flattens Tangshan, a Chinese industrial city with a population of about a million people. The Chinese State Seismological Bureau (SSB) Analysis and Prediction Department was very accurate with the prediction of the earthquake, with an estimate of a major earthquake in the Tangshan region between July 22 and August 5. Despite voicing concerns, the prediction was not taken seriously. A few counties that listened to the advised saved thousands of lives by evacuating to safer areas days before the earthquake occurred.