Australia: High temperatures likely to persist over northern and central regions through at least Dec. 31 /update 2

High temperatures are likely to continue across parts of northern and central Australia through at least Dec. 31. The Australian Bureau of Meteorology (BOM) has issued extreme heatwave warnings (the highest level on a three-tier scale) over parts of Tiwi and Arnhem districts in northern Northern Territory and Pilbara and North Interior districts in northeastern Western Australia through Dec. 28, as well as orange severe heatwave warnings for surrounding areas. Further extreme heatwave conditions are forecast across parts of central Northern Territory, western Queensland, and northern Western Australia Dec. 29-31, as well as severe and low-intensity heatwave conditions across much of the rest of the affected area over the coming days.

The extended period of oppressive heat and dry conditions may produce ideal circumstances for bushfire growth throughout the region. Heatwaves also threaten vulnerable groups - such as the elderly, children, pregnant women, and those with respiratory illnesses - due to the increased possibility of heat stroke or heat exhaustion during prolonged exposure to high temperatures. These health risks could also extend to relatively healthy individuals during significant heatwave events. In addition to significantly impacting athletes and those who work outdoors, high temperatures can cause problems for people using mass transit. The lack of air conditioning and cramped vehicles during rush hour may lead to some passengers' hospitalization.

Very high temperatures may damage road surfaces, and overheated vehicles may worsen traffic problems in urban areas where congestion is already a problem. Commercial trucking disruptions might occur, as very high temperatures put more stress on vehicles, making tire blowouts more common. Major flight disruptions are unlikely at regional airports, but general aviation disruptions are possible, and some airfreight carriers could reduce cargo loads. High temperatures could lead to an increased demand for electricity, which might trigger localized brownouts or blackouts, exacerbating hazardous conditions when air conditioning is no longer possible.