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Winds are measured by Anemometers

 

winds are produced by differences of air temperature, and hence density, between two regions of the earth

 

Due to the Coriolis effect, winds in a high pressure zone blow clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere. In the United States, the prevailing winds move from West to East. Looking on a weather map, you can generally predict the type of weather heading your way by looking towards the west.

The column of air above a high pressure zone is moving downwards. Because the air above the high pressure zone is cooler higher in the atmosphere, as the air moves downward, a lot of the clouds in the air will dissipate.

Winds blow away from a high pressure zone. If you think of the wind like a squeezed balloon, you can imagine that the more pressure you put on the balloon, the more air will be pushed away from the source of the pressure. In fact, wind speeds are calculated based on the pressure gradient produced when air pressure lines called isobars are drawn on a weather map. The closer the isobar lines, the higher the wind speed

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