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beaufort wind scale
| FORCE | WIND SPEED km (mph) | WIND CONDITIONS | EFFECT ON YOU | VISIBLE SIGNS surroundings & water |
LOOKS LIKE |
| 0 | 0-2 (0-1) |
Calm Air | None | smoke rises straight up, water is like a mirror |  |
| 1 | 3-6 (2-3) |
Light Air | None | smoke drifts in direction of wind, ripples on the water |  |
| 2 | 7-11 (4-7) |
Light Breeze | felt on face | leaves rustle, flags stir, grasses sway, small wavelets on the water |  |
| 3 | 12-19 (8-12) |
Gentle Breeze | hair ruffled, loose cloothing flaps | leaves & twigs move, small flags extend, waves and scattered whitecaps on water |  |
| 4 | 20-29 (13-18) |
Moderate Breeze |
hair disarranged | small branches sway, dust & loose paper rise, flags flap, small waves and many whitecaps on water |  |
| 5 | 30-39 (19-24) |
Fresh Breeze | walking takes more effort | small trees sway, flags ripple, moderate ocean waves |  |
| 6 | 40-50 (25-31) |
Strong Breeze | steady walking difficult | large branches move, whistling can be heard in power lines, flags beat, umbrellas turn inside out, large waves and spray on water |  |
| 7 | 51-61 (32-38) |
Near Gale | walking with great difficulty | trees bend, hard to walk, flags extended, white foam on breaking waves |  |
| 8 | 62-74 (39-46) |
Gale | walking dangerous | twigs break off trees, walking is extremely difficult, long moderately high waves on water |  |
| 9 | 75-87 (47-54) |
Strong Gale | blown over crawling difficult | whole trees sway, slight damage to buildings may occur, TV antennas may blow off, awnings rip, spray on water reduces visibility |  |
| 10 | 88-101 | Storm | progress impossible even by crawling | some trees are uprooted, buildings are damaged, water is white foam and tumbling water is observed |  |
| 11 | 102-119 | Violent Storm | many trees are unrooted widespread damage and very high waves |  |
|
| 12 | 120+ (72+) |
Hurricane | very rare, extreme structural damage, water is heavy and foaming, severe spray on water drastically reduces visibility |  |
