Doctors warn there are biological limits to temperatures we can survive, and exposure to extreme heat can provoke a heart attack

Australia’s southern states are scorching in extreme heat that could break temperature records in Victoria and South Australia on Tuesday.

At Ouyen and Mildura in north-west Victoria, temperatures of 49C were forecast for Tuesday afternoon. If reached, they would break the state’s all-time temperature record of 48.8C, set in Hopetoun on Black Saturday in 2009. By 1pm, temperatures of 46.2C in Ouyen and 44.8C in Mildura had been recorded.

At Ouyen and Mildura in north-west Victoria, temperatures of 49C were forecast for Tuesday afternoon. If reached, they would break the state’s all-time temperature record of 48.8C, set in Hopetoun on Black Saturday in 2009. By 1pm, temperatures of 46.2C in Ouyen and 44.8C in Mildura had been recorded.

In Adelaide, the mercury hit 40C before 9.30am on Tuesday, after overnight lows of 35C, BoM observations showed.

Extreme heat is the most common cause of weather-related hospitalisations in Australia, and kills more people than all other natural hazards combined. What does exposure to extreme heat – such as a temperature of 49C – do to the body?

  • Paranoidfactoid@lemmy.worldEnglish
    14·
    6 hours ago

    I lived in Perth for several years and I’ve seen 45 degree heat there. It’s a desert, so it’s dry heat. But that’s hot. Real hot. 49-50 is just insane.

    • phutatorius@lemmy.zipEnglish
      7·
      4 hours ago

      I worked in Saudi Arabia for several years. According to the law, people working outdoors can have a break when it gets over 50. Usually, that law was actually obeyed. Hottest I ever experienced was 52. You don’t have to out in that for long in order for it to be lethal, even if, as in my case, I was running every day in the desert and somewhat acclimatized to it. I’d go at 6 AM because that’s the only time it wasn’t infernally hot. The Bedouins, who know a thing or two about surviving the local climate, would get under cover and minimize activity when it got that hot.

      Now I live in southwestern England, where it seldom gets above 30. I’m fine with that.

    • Damage@feddit.itEnglish
      4·
      3 hours ago

      I live in Italy, in the valley around our biggest river. It’s humid as fuck. Summers used to reach 32-35°C. Nowadays 40-45°C is not uncommon. Our offices are usually air-conditioned, but production areas aren’t.