Wind speed, on the other hand, it done with a single reed switch as it just needs to count rotations to calculate speed. [Rob] did “cheat” by using an off-the-shelf barometric pressure sensor ...

As for wind speed, the 3 cups are used so one cup is always at a 45 degree angle to the wind. With this configuration, there is not one cup that has no wind, as was the case with a four cup ...

Cyclone Olivia recorded the highest wind speed of 253 mph on Barrow Island, Australia, ... the wind gauge being owned by the Chevron Company who has operations on the island. ...