Global news Leila Ramsay ABC, AFRICA, AUSTRALIA, CENTRAL COAST, D ' ENTRECASTEAUX NATIONAL PARK, EARTHQUAKE, EARTHQUAKES, GEOSCIENCE AUSTRALIA, GHANA, GHASEMI, HAD, HADI GHASEMI, NATURAL DISASTER, NATURAL DISASTERS, NSW, OCEANIA, SEISMOLOGY, WA, WESTERN AUSTRALIA Magnitude 4.0 Earthquake Strikes Off Western Australia Coast, Experts Warn of Aftershocks