Rating system to estimate wind speed

In 1805, Sir Francis Beaufort developed a scale used to measure wind force. The scale ranges from 0 (calm) to 12 (hurricane force). Click on this image for a larger Beaufort Wind Scale Chart.

A numerical scale for indicating wind speed on the open sea, named after Admiral Sir Francis Beaufort who devised it in 1806.

The scale used to measure wind velocities by assigning code numbers from 0 (calm) to 12 (hurricane), corresponding to wind speeds of less than one mile per hour (0-1 kilometer per hour) to over 74 miles per hour (over 117 kilometers per hour). See also breeze and wind.

A scale used to measure wind force. The scale ranges from zero (calm) to twelve (hurricane).

A table used for describing the velocity of the wind

A scale used to classify wind speeds, devised in 1805 by Admiral Francis Beaufort of the British Navy.

a numerical scale (0-12) for measuring wind speed created by Admiral Francis Beaufort (1774-1857) of the British navy in 1805. The numerical value is determined by wind speed and its visible effects on the land or sea (i.e., white caps forming, swell 2-3 meters, etc).

A scale of wind strength based on visual assessment of the effects of wind on seas and vegetation.

a scale from 0 to 12 for the force of the wind

A scale used to describe wind strength and its effects on both land and sea.

A scientific scale used to indicate the strength of the wind at sea.

A windscale and sea disturbance table by which mariners grade the force of wind and height of waves, thus communicating the general condition of the sea to others by the use of a wind force number.

Historical wind speed estimation for sailors originally based on sea state

Scale of wind velocity raging from 0 (calm) to 12 (hurricane)

a scale that indicates the wind speed using the effect wind has on certain familiar objects.

A number system used to describe wind forces and sea conditions from 0 for a flat calm to 12 for a hurricane

one of the first scales to estimate wind speeds and their effects. Created by Admiral Sir Francis Beaufort (1774-1857). The scale starts with 0 and goes to a high force of 12; 244

A system of estimating wind velocities invented by Admiral Sir Francis Beaufort of the British Navy.

A numerical system, ranging from 0 (Calm) to 12 (Hurricane) to classify the speed of the wind and covering a range of 0 to 75 m.p.h. or over. The system was originated by Rear-Admiral Sir Francis Beaufort and is based on observing the effect of winds on common objects.

The relationship between sea state and wind speed. The Beaufort Scale can be used to estimate wind speed at SEA, but is valid only for WAVES generated within the local weather system, and assumes that there has been sufficient time for a fully developed SEA to have become established.

A scale of wind force, based on behaviour of the sea under varying degrees of wind speed.

The scale describing wind force devised by Admiral Sir Francis Beaufort in 1808, in which winds are graded by the effect of their force (originally, the amount of sail that a fully-rigged frigate would carry). Scale now reads up to Force 17

a way to measure wind strength

a scale used in reference to measurement of wind force

The Beaufort scale is an empirical measure for describing wind intensity based mainly on observed sea conditions. Its full name is the Beaufort wind force scale.