Beaufort wind scale for land areas
- Make your observations in an open location, e.g. school field.
- Use the scale below to estimate wind speed.
- Enter CALM if there is no wind.
|0||Calm||0||0||Smoke rises vertically|
|1||Light Air||1-5||1-3||Direction shown by smoke drift but not by wind vanes|
|2||Light Breeze||6-11||4-6||Wind felt on face; leaves rustle; wind vane moved by wind|
|3||Gentle Breeze||12-19||7-10||Leaves and small twigs in constant motion; light flags extended|
|4||Moderate Breeze||20-28||11-16||Raises dust and loose paper; small branches moved.|
|5||Fresh Breeze||29-38||17-21||Small trees in leaf begin to sway; crested wavelets form on inland waters.|
|6||Strong Breeze||38-49||22-27||Large branches in motion; whistling heard in telegraph wires; umbrellas used with difficulty.|
|7||Near Gale||50-61||28-33||Whole trees in motion; inconvenience felt when walking against the wind.|
|8||Gale||62-74||34-40||Twigs break off trees; generally impedes progress.|
|9||Strong Gale||75-88||41-47||Slight structural damage (chimney pots and slates removed).|
|10||Storm||89-102||48-55||Seldom experienced inland; trees uprooted; considerable structural damage|
|11||Violent Storm||103-117||56-63||Very rarely experienced; accompanied by widespread damage.|
|12||Hurricane||118 plus||64 plus||Devastation|