FAQ: Why are some winds stronger than others?

Which kind of wind is the strongest?

Westerlies are strongest in the winter, when pressure over the pole is low, and weakest in summer, when the polar high creates stronger polar easterlies. The strongest westerlies blow through the “Roaring Forties,” a wind zone between 40 and 50 degrees latitude in the Southern Hemisphere.

Why are some places more windy than others?

The closer high and low air pressure areas are to one another, the more wind there is. That’s why, for example, coastal areas tend to be very windy. During the day, land heats up more quickly than the sea. So when air over land rises, cooler air over the water blows in to fill the gap.

What causes wind to be stronger or weaker?

The closer the high and low pressure areas are together, the stronger the pressure gradient, so the winds are stronger. On weather maps, lines of constant pressure are drawn(isobars). If the isobars are curved cyclonically (around the low pressure) the wind will be weaker. Friction from the ground slows the wind down.

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Why is wind stronger higher up?

Going up in altitude, the pressure gradient between the warm air and the cold air increases with height. slow the air as it collides into them. The influence of this friction is less with height above the ground, thus the wind speed increases with height.

What is a bad wind speed?

The Beaufort Scale – use at Sea

Force Description Wind speed
8 Gale 39 – 46 mph
9 Strong gale 47 – 54 mph
10 Storm 55 – 63 mph
11 Violent storm 64 – 72 mph

What are the 4 types of winds?

The Four Major Wind Systems and Wind Belts: The four major wind systems are the Polar and Tropical Easterlies, the Prevailing Westerlies and the Intertropical Convergence Zone. These are also wind belts. There are three other types of wind belts, also.

What is the windiest place on Earth?

Commonwealth Bay, Antartica

The Guinness Book of World Records and National Geographic Atlas have both listed this bay in Antarctica as the windiest place on the planet. Katabatic winds in Commonwealth Bay are recorded at over 150 mph on a regular basis, and the average annual wind speed is 50 mph.

What is the windiest city on earth?

Wellington, New Zealand, is widely regarded as the windiest major city in the world, with an average wind speed of more than 16 miles per hour.

Where is the strongest winds on Earth?

For nearly sixty-two years, Mount Washington, New Hampshire held the world record for the fastest wind gust ever recorded on the surface of the Earth: 231 miles per hour, recorded April 12, 1934 by Mount Washington Observatory staff.

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What is the main cause of winds?

Wind is air in motion. It is produced by the uneven heating of the earth’s surface by the sun. Since the earth’s surface is made of various land and water formations, it absorbs the sun’s radiation unevenly. Two factors are necessary to specify wind: speed and direction.

What wind belt do we live in?

Note that the U.S. lies primarily in the Westerly Wind Belt with prevailing winds from the west.

What force generates winds?

Wind results from a horizontal difference in air pressure and since the sun heats different parts of the Earth differently, causing pressure differences, the Sun is the driving force for most winds.

How high can wind speeds in a tornado get?

It is generally believed that tornadic wind speeds can be as high as 300 mph in the most violent tornadoes. Wind speeds that high can cause automobiles to become airborne, rip ordinary homes to shreds, and turn broken glass and other debris into lethal missiles.

What does wind shear mean?

Wind shear is defined as a sudden change of wind velocity and/or direction. Windshear may be vertical or horizontal, or a mixture of both types.

How do buildings affect wind speed?

As the air at higher altitudes is colder, it can create chillier micro-climates when downdraught from skyscrapers reaches street level. This can be welcome during hot spells, but less so in winter. And, as buildings go higher, the speed of air hitting them rises, increasing ground winds below.

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