What are aftershocks for earthquakes?
Aftershocks are normally weaker shocks that happen days or weeks later.Sometimes they can cause extensive damage particularly to structures already weakened by the initial earthquake.So,you need not worry if your house is not already weakened by the earlier earthquake. Whereas foreshocks are minor precursors that can occur befor a major earhquake,and often used to preict a larger seismic event.
