The "wind direction" is the direction from which the wind is blowing. The direction you are facing is the wind if you stand with the wind straight in your face. As a result, a north wind tends to bring cooler weather to Chicago, whilst a south breeze tends to bring warmer weather.
You can estimate the wind direction by looking at the clouds or watching the waves in a lake. If the clouds are moving, the wind is blowing in the direction the clouds are going. If there are no clouds but it's still windy, then look at the waves under water to find out how the wind is blowing.
People often think that the sun will be visible even when overcast, but this is not true. You can only see the sun when there are no clouds in the sky. However, since the sun goes down every day, you will always know whether it is windy by checking before you go outside.
You can also tell the wind direction by listening to the birds. If they are flying away from the wind, it is coming from the east. If they are flying towards the wind, it is coming from the west. There are other ways of telling the wind direction too; we will discuss these later in the article.
Why does the wind blow? The wind blows because it has no else to go. Clouds don't rain unless there is something underneath them to catch the droplets.
If not, it would be called "against the wind." Of course, there are always exceptions to these rules. Large bodies of water can affect the wind, as can mountains and other large objects in its path.
You can estimate how strong the wind is by observing certain characteristics of its movement. A gentle breeze has small waves on a lake or oceanic surface; a moderate breeze causes waves that are one-third as high as those caused by a mild wind, while a strong wind creates waves that are half as high as those created by a strong wind. However many different ways there are to measure the strength of a wind! It may be quantified in terms of speed and/or force, but also possible methods include measuring the noise it makes when it hits solid objects such as buildings or vehicles, or estimating how much sand or dust it is kicking up.
When you are trying to decide which way the wind is blowing, first figure out where the wind comes from. If it's coming down a road, then it's probably going in a direction perpendicular to the road.
Meteorologists always define wind direction as the direction from which the wind is blowing. 020 denotes a breeze from the slight east of the north (degrees). 30 degrees is a strong wind from the south-southeast (degrees). 60 degrees is a storm force wind from the southwest (miles). 90 degrees is a hurricane force wind from the west-northwest (miles). 120 degrees is a gale force wind from the north-northeast (miles)
These are approximate numbers for reference only, since there can be considerable variation depending on the strength and speed of the wind and how close it is coming from one direction or another. Also, weather conditions such as clouds, rain, snow, etc., will affect how you perceive the wind direction.
Wind speed is measured using an anemometer (wind meter) at approximately 12 inches high. If you look up "anemometers" on Google Maps, you will see pictures of these devices. They usually have a cone or cylinder shaped body with scales showing units of velocity from 1 to 20 miles per hour (mph).
The direction that the wind is coming from is called its compass point.
The direction of the wind is described by the direction from whence it originated. A north or northerly wind, for example, blows from north to south. As a result, a wind blowing from the north has a wind direction of 0 deg (360 deg); a wind coming from the east has a wind direction of 90 deg, and so on. The compass points are divided into four quadrants, with each quadrant representing a quarter-circle centered on the origin point.
Because winds come from all directions, they cannot be said to have a specific direction; instead, they can only be described as being from north, south, east, or west. Wind directions are important factors in weather forecasting because they provide information about the location of air masses that could affect local conditions.
North winds are generally thought to be calm, gentle breezes, while south winds are usually brisk, gusting winds. East winds are usually called "breezes," while west winds are usually called "gales." However, these are generalities that do not apply to all areas of the world or at all times. For example, west winds can be strong and gusty in the Pacific Ocean but not on land, while east winds can be weak over land but often strong over open water.
North winds are calmer than east or west winds and tend to blow more steadily across open water than over land. West winds are stronger than north winds and can cause significant damage when they hit land.