Notes
 |
Wind speed
per second |
Effect
|
 |
Less than
4 meters |
Wind felt on face.
Leaves moved. |
 |
Less than
8 meters |
Raises dust, loose paper.
Small branches moved. |
 |
Less than
12 meters |
Wavelets form on ponds and swamps.
Umbrellas used with difficulty. |
 |
Less than
16 meters |
Inconvenience felt walking against the wind. |
 |
More than
16 meters |
Wind generally impedes progress.
Mobile homes may shake. |
