Originally developed to help sailors estimate the wind at sea, our Beaufort Scale is modified for judging the wind on the land. How to Judge the Wind 1-3 mph Light Air Smoke drifts. Wind cannot be felt. 4-7 mph Light Breeze Wind felt on face.
Weather vanes move.
8-12 mph Gentle Breeze Leaves and twigs in motion. Light flags are extended. Moderate Breeze Wind raises dust and loose papers. Small branches move. 19-24 mph Fresh Breeze Small trees in leaf sway slightly.