Were there any signs before the Wenchuan earthquake?

It is said that there are precursors before the earthquake. Now look at those phenomena, but it makes people feel incredible, making us feel that we humans are insignificant in front of nature.

earthquake cloud

On the evening of May 9, a netizen from Sichuan posted on the post bar that he saw a large earthquake cloud in the direction of Sichuan, and then he said that an earthquake of magnitude 6 or above might occur. But at that time, this post sank and nobody cared. It was not until after the earthquake that people suddenly remembered that there was such a post. Moreover, according to some survivors' memories, the sunset glow was scary and red as blood the night before the earthquake.

According to experts' analysis, this is the energy released by the earth in advance before the earthquake, which raises the air temperature and forms an earthquake cloud. It is said that this kind of cloud has a characteristic that its tail points to where it happened. However, there is no definite answer to whether the earthquake cloud really exists, because there are many kinds of statements, which are not very unified.

Extremely hot ground light

It is said that on the day of the earthquake, it was sultry and you sweated when you moved. It is said that the Tangshan earthquake was the same. Some people say that one day a month before the earthquake, in the early morning, when there was no moon, it was very bright outside and the surrounding mountains and trees could be seen clearly. Some people say that this is terrestrial light, but we know that terrestrial light appeared during the earthquake or a short time before the earthquake, and it looks like aurora.

Magnetic anomaly

On May 9th, China Geomagnetic Network observed the low-point displacement anomaly of Chinese mainland geomagnetic field, and the abnormal position was around the epicenter. At 12, an earthquake happened.