Why do the “Wind Speed” sensors appear to read so low?
Sensors of the “Wind Speed” type do not transmit the instantaneous wind velocity but rather an average wind speed over a time period. That period happens to be the time it took for the last 1 km of wind (wind run) to “blow” past the sensor, so the period is shortened as the wind speed increases. The average wind speed reported is the distance (1 km) divided by the time (seconds), converted to miles per hour.
