STORIES OF SCIENCE AND LEARNING FROM ARIZONA STATE UNIVERSITY
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Weather Station

Wind Makes Weather

Wind can be many things. A gentle breeze on a warm spring day is welcome and soothing. But the powerful swirling winds of a tornado or hurricane hold some of Nature's most powerful destructive force. Breeze or gale, wind is really nothing more than hot and cold air in motion.

The world's winds are part of a global system of air circulation that moves light hot air toward the poles and the heavy cold air toward the equator. When dense cold air meets hot air, the cold air is sucked under the rising hot air. A low pressure front is created. Wind blows wherever there is a difference in air temperature and pressure.

Low-pressure zones are characterized as wet and stormy weather. These zones come with gray skies and high winds.