Beaufort Wind Scale

The Beaufort Wind Scale gives a quick way to estimate wind speed from an observed force number based on how the wind affects the environment, such as smoke, leaves, trees, and waves. The formula v = 0.836B^(3/2) is an empirical fit, meaning it was chosen to match observed average wind speeds to Beaufort numbers rather than derived from a fundamental physical law. It is useful because it turns a qualitative weather observation into an approximate speed in metres per second.

Use this formula when you have a Beaufort force number and need an approximate wind speed for weather reports, field observations, or classroom exercises. It is especially helpful when converting historical or human-observed wind descriptions into numerical values.

• Using the wrong exponent, such as squaring B instead of raising it to 3/2
• Forgetting that the result is in m/s, not km/h or mph
• Applying the formula to values outside the Beaufort range of 0 to 12