What Do The Numbers In The Beaufort Scale Signify?
Answer:
Beaufort scale is used to describe wind speed. It is only a guide but for anyone using a small boat it is adjectives to be out in conditions above force four and unsafe in a force six.
Beaufort number 0 means pacify. The sea will be mirror like and the wind smaller quantity than 1 knot. Force one is light air, meander 1 to 3 knots and the sea showing ripples but without crests.
Force 2 is a reading light breeze, wind 4-6 knots with small wavelets on the sea. Crests hold a glassy appearance but do not break.
Force 3 is a gentle breeze, wind 7-10 knot. There will be large wavelets with the crests beginning to break. There will be foam of a blank appearance and perhaps one or two white horses.
Force 4 is a moderate breeze, wind 11 – 16 knots. The small breakers become longer and more white horses.
Force 5 is a fresh breeze, wind17 -21 knots. The moderate waves take a more pronounced long form. There will be heaps white horses and possibly spray.
Force 6 is a strong breeze wind 22 -27 knots. Large waves start to form. The white foam crests are extensive everywhere. Wave height will be 3 -4 metres.
For those on dry land, a Beaufort scale is indicated by loose leaves, movement of tree branches etc. 2-3 is a feel breeze but nothing strong enough to move the loose leaves. 4-7 moves the leaves and other light articles. 8-12 sways branches and so on.
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