Is it still impossible to predict earthquakes in advance?

Earthquakes cannot be predicted in advance.

at present, the level of science and technology can't predict the coming of earthquakes, and so can earthquakes for a long time to come. The so-called examples of successful earthquake prediction are basically coincidences. For earthquakes, what we should do more is to improve the seismic grade of buildings and do a good job in defense, rather than predicting earthquakes.

according to statistics, there are about 5 million earthquakes on the earth every year, that is, tens of thousands of earthquakes occur every day. Most of them are too small or too far away for people to feel; There are about ten or twenty earthquakes that can really cause serious harm to human beings; There are about one or two earthquakes that can cause particularly serious disasters. Earthquakes that people can't feel must be recorded by seismographs.

Different types of seismographs can record earthquakes with different intensities and distances. Thousands of various seismic instruments are running around the world to monitor the trend of earthquakes day and night.

however, earthquakes can be warned in advance.

earthquake early warning is not earthquake prediction or prediction. Earthquake early warning refers to "racing" against seismic waves according to the time difference between longitudinal and transverse waves after an earthquake, so as to win the time for early warning.

at the beginning of the earthquake, the fast-moving P-wave is about 7 kilometers per second, while the more destructive S-wave will reach the surface several tens of seconds later because of its relatively slow propagation speed (about 4 kilometers per second). After detecting the longitudinal wave, the underground detection instrument transmits it to the computer, and immediately calculates the approximate information such as magnitude, intensity, source, etc. The relevant departments can give an alarm through television and radio more than 1 seconds before the shear wave reaches the ground. Television broadcasting relies on electromagnetic waves, which are much faster than shear waves. The effective operation of the early warning system depends on a powerful earthquake monitoring network.