Estimate Wind by watching objects move!
How Fast Is
You can estimate wind speed with the
Beaufort Scale. It was developed in 1805 by a Navy admiral to measure wind at
sea. But we can also use it to measure wind on land.
Miles Per Hour
<1 Smoke rises straight up, no
1-3 Smoke drifts slowly, tree leaves barely move
4-7 Leaves rustle, wind felt on face
8-12 Leaves and twigs move, dust raised from ground
13-18 Small branches move,
dust and paper blown away.
19-24 Small trees and large branches sway
25-31 Big branches move a lot, wind whistles, umbrellas
turn inside out.
32-38 Whole trees sway, hard to walk
39-46 Tree twigs break, very hard to walk
47-54 Branches, roof tiles blown down
55-63 Trees uprooted, severe building damage
64-72 Widespread building damage
73+ Severe destruction
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ęCopyright 2004 Nick Walker/Small Gate Media