What is the Beaufort Scale primarily used to estimate?

The Beaufort Scale is primarily used to estimate wind speed based on observed conditions at sea or on land. Developed in the early 19th century by Sir Francis Beaufort, the scale categorizes wind strength into 13 levels, ranging from calm (no wind) to hurricane conditions. Each level is associated with specific indicators, such as how trees sway, the presence of whitecaps on water, and the degree to which waves build up on the sea surface.

This method provides a practical way for mariners and meteorologists to assess wind conditions without requiring complex instruments, making it particularly valuable for maritime navigation and forecasting. While wave height can be a result of wind speed, and visibility conditions may be affected by wind, the primary focus of the Beaufort Scale is to give a clear indication of the wind's intensity and its corresponding effects.