Quaking in the Storms

Robert sent in this link https://www.nationalgeographic.com/science/2019/10/new-seismic-phenomeno… … and surprisingly the quakes are said to never occur between May and August. Some storm quakes also do not occur when the Earth is at its furthest point from the Sun. Is something else going on here? Robert is thinking along the lines of electro-magnetism as we know electric energy is part of tornadoes and hurricanes – and of course, electric storms.