Search billions of records on
Website logo - Click to go to Home page

Beaufort Scale of wind speeds

No. Name Speed mph Speed kph Description
0 Calm Less than 1 Less than 1 Calm; smoke rises vertically
1 Light air 1-3 1-5 Direction of wind shown by smoke but not by wind vanes
2 Light breeze 4-7 6-11 Wind felt on face; leaves rustle; wind vane moves
3 Gentle breeze 8-12 12-19 Leaves and small twigs in constant motion; wind extends light flag
4 Moderate breeze 13-18 20-28 Wind raises dust and loose paper; small branches move
5 Fresh breeze 19-24 29-38 Small-leaved trees begin to sway; crested wavelets form on inland waters
6 Strong breeze 25-31 39-49 Large branches move; overhead wires whistle; umbrellas difficult to control
7 Moderate or near gale 32-38 50-61 Whole trees sway; walking against wind is difficult
8 Fresh gale 39-46 62-74 Twigs break off trees; moving cars veer
9 Strong gale 47-54 75-88 Slight structural damage occurs; shingles may blow away
10 Whole gale or storm 55-63 89-102 Trees uprooted; considerable structural damage occurs
11 Storm or violent storm 64-72 103-117 Widespread damage occurs
12 Hurricane Greater than 72 Greater than 117 Widespread damage occurs

JGC Logo Valid HTML5 Logo HTML5 Logo Valid CSS3 Logo JGC Logo
Copyright logo
This page (beaufort.html) was last modified on Sunday 27/01/2013