The Beaufort Wind Force Scale measures wind speed and its observed effects on land and sea. Created by Sir Francis Beaufort, the scale ranges from 0 (calm) to 12 (hurricane). Beaufort Scale Day ...

Web Extra: The Complete Beaufort Scale 0 (calm): less than 1 mph; calm, smoke rises vertically 1 (light air): 1-3 mph; direction of wind shown by smoke but not by wind vanes ...

An atmospheric gathering storm of a documentary exploring the extraordinary history of the Beaufort Scale - a system designed to help find language for the wind. Show more An atmospheric gathering ...