How to Use the Beaufort Wind Scale
The Beaufort Wind Scale was created by Sir Francis Beaufort so that wind speed could be measured on a standard scale, making it possible for sailors to communicate with each other more objectively about wind speeds. The observer uses observable phenomena to determine the speed of wind.
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Instructions
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1
Note the number on the Beaufort Wind Scale that has been used to tell you what the current wind conditions are like.
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2
Consult the Beaufort Wind Scale until you have memorized it so that you can accurately know what the weather condition is without making a mistake.
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3
Note that if the number is zero, then the wind is calm. Sea conditions are flat and smoke rises vertically rather than being blown about by wind. The wind speed is zero mph when the Beaufort Scale says that the wind is at zero.
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4
Note that if the Beaufort number is one, then there are ripples on water, but there are no crests on them. Smoke moves in the wind's direction. At this level, the wind is moving at one to 3 mph.
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5
Note that if the Beaufort number is between 2 and 3, then there are small waves on water. At 2, wind can be felt on the skin and leaves rustle. At 3, leaves are in constant motion. The wind is moving between 1.6 and 5.4 mph at this level of the Beaufort Wind Scale.
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Note that if the Beaufort number is at 9, then there can be light structural damage on the ground. On the sea, there are high waves with considerable spray. The wind moves between 47 and 54 mph at this level.
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7
Note that if the Beaufort level is 12, then there is a hurricane. The wind is moving at 74 to 95 mph.
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Tips & Warnings
Committing the Beaufort Wind Scale to memory enables you to use the scale without consulting a print version of the scale.
If the Beaufort number reaches 9, then there could be some danger of structural damage.
