Wind speed units & wind directions converter - Windfinder (2024)

FAQs

How to read wind direction on windfinder? ›

The arrows are pointing in the forecasted wind direction. For example, if an arrow is pointing south (which corresponds to a downward direction on the map), the wind is forecasted to blow from north to south.

A number of different units are used to indicate wind speed, including meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), feet per second (ft/s) and knots (kt).

The wind direction can be calculated using trigonometric functions: Angle = arctan(V/U), this is valid as long as U is not equal to zero. You must also adjust for what quadrant you are in based on whether U and V are positive or negative.

To convert degrees to compass directions, I first divide the compass into 16 sectors of 22.5 degrees each. The sectors are like slices of pie, centered on the compass points. Tip: If you would like to use eight sectors instead of 16, with a shorter lookup table, divide by 45 degrees instead of 22.5 degrees.

Wind barbs are the most visible portion of a station plot. They tell you the speed and direction of winds at the station. The barb always points in the direction from which the wind is blowing: if the barb points toward the southeast, it means the wind is blowing from the southeast.

To interpret wind data on Windguru, you need to look at the wind speed and gusts. The speed is indicated in knots, and the color coding represents white, blue, and green for light winds, and red and pink for strong winds. The arrow indicates the wind direction, which is a crucial piece of information.

Degrees: Alternatively, the wind can be reported in clockwise degrees counting from the north, which corresponds to 0°. Thus, 90° is equivalent to the east, 180° is equivalent to the south, and 270° is equivalent to the west.

Wind Speed And Direction

The wind direction is plotted as the shaft of an arrow extending from the station circle toward the direction from which the wind is blowing. The wind speed is plotted as feathers and half-feathers representing 10 and 5 knots, on the shaft on the wind direction arrow.

An anemometer is an instrument that measures wind speed and pressure. Some anemometers also indicate wind direction. They are used by meteorologists, pilots, engineers, and scientists.

What is the relationship between wind speed and direction? ›

The relationship between wind speed and direction can vary depending on weather patterns and geographical location. In general, stronger winds tend to be associated with larger differences in pressure or temperature across an area, resulting in more significant variations in wind direction.

The true direction from which the wind is blowing at a given location (i.e., wind blowing from the north to the south is a north wind). It is normally measured in tens of degrees from 10 degrees clockwise through 360 degrees. North is 360 degrees. A wind direction of 0 degrees is only used when wind is calm.

Math Wind Convention

The magnitude of U_H is U_H = (u² + v²)^1/2. The math wind angle, α, is the angle of the wind relative to the x-axis, so that tan(α) = v/u and the angle increases counterclockwise as the direction moves from the eastward x-axis (α = 0^o) to the northward y-axis (α = 90^o) .

Because the wind direction is also measured in degrees (°) from 0° to 360°, where 0° is north, and where 32 directions correspond perfectly with the divisions in degrees. Then we move clockwise: 0° — north wind (N) 22.5° — north-northeast wind (NNE)

The answer is Ferrel's law. Earth is divided into two hemispheres, the northern and southern hemispheres. In each hemispheres wind blow in a different direction. The direction of the wind in both the hemisphere is opposite to each other.

Wind direction is usually reported in cardinal (or compass) direction, or in degrees. Consequently, a wind blowing from the north has a wind direction referred to as 0° (360°); a wind blowing from the east has a wind direction referred to as 90°, etc. This wind vane indicates an east wind.

Wind direction is measured relative to true north (not magnetic north) and is reported from where the wind is blowing. An easterly wind blows from the east or 90 degrees, a southerly from the south or 180 degrees and a westerly from the west or 270 degrees.

The best way to determine the direction of prevailing winds at your home or business is to document the wind direction each day for a period of time. You can do this by setting up a weather vane or simply going outside and stand facing into the wind.

Accordingly, the wind direction is indicated by an arrow, with the base indicating the direction and the end (triangle) indicating WHERE the wind is blowing to. Next to the arrow the direction is usually written in letters: SW, NE, S, N and so on. Wind speed.