The USA is currently battling a scorching heatwave, with nearly 100 million people under heat alerts. A massive 'heat dome' has settled over central and eastern parts of the country, trapping heat and causing dangerously high temperatures.
What's a Heat Dome?
A heat dome is a large area of high pressure that acts like a lid on the atmosphere, preventing hot air from escaping. This leads to prolonged periods of extreme heat and dryness.
Where is the Heatwave the Worst?
The worst affected areas are from the South to the East Coast of the USA, including major cities like St. Louis, Kansas City, and Oklahoma City. The heat index, or 'feels-like' temperature, is expected to exceed 37°C (100°F) in many areas, with some spots potentially feeling closer to 43-46°C (110-115°F).
Is South Africa at Risk?
While this particular heatwave is concentrated in the USA, it serves as a stark reminder of the increasing frequency and intensity of extreme weather events globally. Climate change, driven by fossil fuel emissions, is making heatwaves more common and severe. South Africa, like many other countries, is vulnerable to these changes.
How to Stay Safe During Extreme Heat:
- Stay hydrated by drinking plenty of water.
- Avoid strenuous activities during the hottest part of the day.
- Seek out air-conditioned environments or shaded areas.
- Check on vulnerable family members and neighbours.
- Wear light-coloured, loose-fitting clothing.
While we're not currently experiencing the same extreme conditions as the USA, it's crucial to be prepared for potential heatwaves in South Africa. Stay informed about weather forecasts and take necessary precautions to protect yourself and your loved ones.