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Sandstorms
When storm clouds form after a hot day in the desert, sandstorms can happen. Most sandstorms are not dangerous and they are only a few meters high, but sometimes strong winds blow the sand up to 3 kilometers in the air and carry it for thousands of kilometers. Big sandstorms can break rocks and they can last for theree or more days! It's difficult to see and breathe in a sandstorm.
Humid Weather.
Hot places are not always dry. Hot places near water are often humid because air sucks up the water that evaporates from oceans and rivers. The amount of water vapor in the air is called its humidity.
In hot, humid weather your sweat can't evaporate, so you can't cool down. You must drink lots of water in hot weather. If your body gets too hot you can get heatstroke and be sick.