MIME-Version: 1.0 Content-Location: file:///C:/6C9954C5/BeaufortForce.htm Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii" Beaufort Force

Beaufort Force

Name

Description

Approximate Speed (MPH)

0

Complete Calm

No motion. Smoke rises straight up

<1

1

Light air

Smoke drifts

1-2

2

Light breeze

Wind felt on face. Leaves rustle. Weather is clear

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4-7

3

Gentle breeze

Leaves and twigs move. Light flags flap

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8-12

4

Moderate breeze

Small branches move

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13-18

5

Fresh breeze

Bushes and small trees sway

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19-24

6

Strong breeze

Wind whistles in electricity and phone wires

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25-31

7

Near gale

Whole trees sway

32-38

8

Gale

Difficult to walk. Tree twigs start to break

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39-46

9

Strong Gale

Tiles and chimneys blown from roofs and branches sna= p. Sky dark thick clouds

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47-54

10

Storm

Trees uprooted. Buildings damaged

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55-63

11

Violent storm

Widespread damage caused to buildings

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64-72

12

Hurricane

Severe devastation caused

73+

Wind Speed calculations