Millions of people in New South Wales hunkered down last night as an intense “bomb cyclone” swept in. Falling trees took out power lines, leaving about 40,000 people without power, while some areas copped 200mm of rain in 24 hours.
Evacuation orders are in place at Wamberal, an erosion hotspot on the NSW Central Coast. Flood warnings are in place for the Nepean and Hawkesbury Rivers in Sydney.
But it could have been significantly worse. That’s because a second, slightly weaker low has formed out to sea, sucking energy away from the main storm. Without it, wave heights would likely have been much higher, and winds and rain would have been more intense. The main storm’s sustained winds offshore were downgraded from storm force (88–116km per hour) to gale force (63–87km per hour).
