The weather changed abnormally after the earthquake.

The weather was unusually hot, and I felt "particularly sultry", "hot" and "uncomfortable" before the earthquake. The temperature will be warmer than normal, even if it rains heavily, it will be hot and irritable, and it will feel unusually warm in winter, which may lead to an earthquake. For example, on March 8, 1966/kloc-0 before Xingtai earthquake, the daily average temperature rose sharply from-13℃ to-0/1℃ in seven days, and the temperature rise reached 24℃, which was really rare. Another example is the explosive warming before the Haicheng earthquake. 1February 3, 975, from 8: 00 to 10, the temperature rose within two hours 12℃.

A strange wind will suddenly blow before an earthquake, and the wind is still strong, and the wind direction keeps spinning. It is an amazing coincidence that an earthquake will happen soon where the strange wind passes. 1February 6, 973, before the strong earthquake of magnitude 7.9 occurred in Luding, Sichuan, within a few hours, the wind was strong and the direction was disordered, and pieces of paper and dead leaves scurried up and down, with the maximum wind speed reaching14m/s. ..

Unusually continuous or torrential rain, extremely hot weather1May, 974 1 1, continuous rainfall 13 days before the Zhaotong earthquake of magnitude 7. 1 in Yunnan, and the rainfall broke the historical record for the same period. Before the winter earthquake, there will be a large range of abnormal snowfall. For example,1March 6, 966, there was a rare heavy snow in spring in North China Plain, and Xingtai earthquake occurred five days later.

Before the impending earthquake, the ground light will appear in the lower atmosphere near the ground, which occurs a few minutes before the impending earthquake. The color of terrestrial light is blue, white and red, and it often flashes briefly at a height where the horizon is not high. Before the Tangshan earthquake in July, 1976, in the early morning, the train driver saw the blue ground light, and soon the Tangshan earthquake occurred. When the ground light appears at night, it suddenly flashes in the dark night sky, and you can see the mountain scenery in the distance. Before Xingtai M6.8 earthquake on March 8, 1966, and Pu 'er M6.7 earthquake in Yunnan, white and red ground light were seen respectively.

It usually rains heavily before an earthquake, and the sky should be clean after the rain. However, before the earthquake, the sky was cloudy, and it seemed that it was not soil, smoke or fog in Justin Sa, and the sun and moon were dim. 1On February 5, 966, an earthquake with a magnitude of 6.5 occurred in Dongchuan, Yunnan. For four days in a row, the sky was gray, the fog was thick and the visibility was poor. However, there has never been smog in Dongchuan in history. 1-2 an hour before the Haicheng earthquake, it suddenly became foggy and misty, and the sky was dark and the sunlight could not be seen clearly. After the earthquake, the fog disappeared and the sky was clear and bright.

The interference of atmospheric electricity is like the noise heard on the radio when a thunderstorm comes, which is the result of atmospheric electricity interference before the earthquake. Before the earthquake, the earth's atmosphere will also change, and people can smell the strange smell, which comes from the strange smell coming out of the ground fissure.