Transporterman, these two threads explain it much better than I can.
https://www.wxforum.net/index.php?topic=29280.0
this one explains how the wind speed is done. see reply #5
https://www.wxforum.net/index.php?topic=28713.0
https://www.wxforum.net/index.php?topic=29280.0
this one explains how the wind speed is done. see reply #5
https://www.wxforum.net/index.php?topic=28713.0