Why is the weather bad after the earthquake?

Because many physical and chemical properties of the earth will change during the earthquake, such as magnetic field, electric field, gravity anomaly, etc., and the outside of the earth will also change due to the influence of change. For example, the change of magnetic field can lead to temporary magnetic anomalies, and the change of electric field can stimulate the formation of geoelectricity and even lightning. Because of the earthquake, the heat energy inside the earth can overflow the crust and increase the energy on the surface. It can cause the surface temperature to increase and the air pressure to decrease, forming a low-pressure area, and the outside of the low-pressure area is a high-pressure area, which can form air convection. If the cold and hot air streams meet, various meteorological changes can be formed. These changes are not the specific ability of earthquakes, but the changes in the external properties of the surface caused by geophysical fields.

I hope I can help you.