What causes extreme heat waves and their impact on urban areas?

Extreme heat waves happen when the sun shines really strongly for a long time, and the air gets super hot, like when you leave your juice box in the car on a sunny day, it becomes warm and sometimes even hot to drink!

Why It Gets So Hot

Imagine your town is like a big cookie that's baking in the oven. The sun is like the heat from the oven. When there’s little clouds, the sun can shine through, making everything hotter. If there are also strong winds blowing from hot places nearby, it's like turning up the oven even more!

What Happens to Cities

Cities are full of buildings, roads, and cars that absorb heat during the day and keep it trapped at night. It’s like wearing a heavy coat on a warm day, you feel even hotter! People can get tired, sweaty, or even sick from the heat.

Sometimes, if there's not enough rain, the ground gets drier and holds on to the heat longer, making the hot days even worse!

That’s why in big cities, the temperature often feels higher than in the countryside, it's like being inside a giant, sun-baked toaster!

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Examples

  1. A city like Phoenix feels even hotter because buildings and roads absorb the sun's heat all day.
  2. During a heat wave, the air inside a car can get hot enough to cook an egg.
  3. People in cities might feel more exhausted during a heat wave than those living in the countryside.

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