Over the past 15 years, we have witnessed some of the world’s largest possible recorded earthquakes that have had catastrophic impacts around the globe. But, looking back 30 years to 1989, we saw two smaller, but still significant earthquakes. The first was the M6.9 Loma Prieta event that hit the San Francisco Bay Area in October, an earthquake that is familiar to many due to its proximity to the city, and its level of destruction. However, less are aware of the other notable earthquake that year. December 28, 1989, is a memorable date for many Australians; as it marks the country’s most damaging earthquake in recorded history, and still remains one of Australia’s costliest natural catastrophes to date.
Despite its moderate magnitude, the M5.4 Newcastle earthquake caused widespread ground shaking, with insured losses of just under $1 billion AUD (US$690 million) at the time of the event (ICA, 2012), a loss which if the earthquake was repeated, RMS estimates would cost over $5 billion AUD.Continue reading