The Beaufort Scale

The Beaufort Scale

Force One - Light air (1-3 knots)

Force Two - Light breeze (4-6 knots)

Force Three - Gentle breeze (7-10 knots)

Force Four - Moderate breeze (11-16 knots)

Force Five - Fresh breeze (17-21 knots)

Force Six - Strong breeze (22-27 knots)

Force Seven - Near gale (28-33 knots)

Force Eight - Gale (34-40 knots)

Force Nine - Strong gale (41-47 knots)

Force Ten - Storm (48-55 knots)

Force Eleven - Violent Storm (56-63 knots)

Force Twelve - Hurricane (64+ knots)

 

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