Why didn't the meteorological department predict the tornado attack in Chongqing in the early morning of May 6?

Because the probability of tornado formation in China is very low, there are few tornadoes in China. Unlike the United States, tornadoes are frequent natural disasters in the United States, so the United States has special equipment and departments to predict tornadoes. For example, just as floods are particularly frequent in our country, there are monitoring and early warning points everywhere along the river, so there are not many floods in the United States, so the prediction of natural disasters is aimed at frequent natural disasters.