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Heatwaves are perhaps our most under-rated natural hazard. In Australia during the 20th century, heatwaves caused more deaths than any other natural hazard.
A heatwave is a prolonged period of 3 or more consecutive days of excessive heat. In Australia excessive heat can vary from 35°C to 42°C.
This unusual and uncomfortable hot weather can impact on human and animal health and cause disruption to community infrastructure such as power supply, public transport and services.
Although everyone is vulnerable to the affects of a heatwave, those most at risk are:
People who undertake vigorous exercise during a heatwave (including animals) are also susceptible to its effects.
Beat the Heat - NSW Health