Every day ocurr thounsands of earthquakes, most of them too weak to be felt.
Every day scientific instruments detect about 500,000 quakes around the globe. Peolpe feel only an small fraction of those.
On average there are already 8 quakes that happen every year somewhere on Earth. But severe earthquakes on average happen once every five years.
This kind of movemnts cause widespread destruction, also they can pruduce burst dum, city destructions, volcano eruptions, and set off landslides and giant sea waves.
Most of the recent earthquakes had this caracteristics this causes noncontable damages.