Severe weather events or extreme weather events in Sydney, Australia, include hailstorms, thunderstorms, gale, bushfires, heatwaves, drought, and flash flooding (caused by East coast lows or black nor'easters).
[1] Global warming has increased the chances of extreme rain and flash floods in Sydney recently.
[2][3] Destructive heavy rainfall events have been recorded occurring in the Sydney area since records began in the 18th century.
[4][2][5] Annually, coastal Sydney sees five heat-related deaths per 100,000 people while the western suburbs see 14 per 100,000.
[6] Heat-related deaths in the city were common in the late 19th and early 20th century period (due to lack of air conditioners) where several individual cases were reported.