how can I measure the winds' speed?

Question

i always hear in the news that the winds' speed is -- Km/H, how do they measure it?

Answer 1

There are several different devices that can be used. The one most commonly used for professional purposes is a rotating cup anemometer, which has a number of hemispherical cups (often three) mounted on spokes such that the assemblage can turn in a wind. This drives a small interrupter or generator which can present an indication on a scale. Other types are the rotating vane, in which a vane is suspended vertically such that it can be lifted by the wind, and devices which measure the air pressure from wind, such as the Dwyer gauge: this consists of a small ball in a slightly tapered tube, and wind pressure forces air through the tube, lifting the ball. The Dwyer is popular among yachtsmen. Yet another device is the aircraft airspeed indicator, in which the pressure difference between ram air and slipstream air is measured and presented on a gauge calibrated in knots or in miles per hour.

Answer 2

An anemometer is a device used to measure wind, as for measuring the speed in Km/H, to convert mph to Km/H miles/hour x 1.609 = kilometers/hour

Answer 3

very simple, knowing the distance covered by the wind at certain time interval, S = distance / time...your question is answered