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CD School House 9
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CD School House 9.0 - Wayzata Technology (1994).iso
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weth360
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WIND.TXT
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Text File
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1994-01-04
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2KB
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49 lines
WIND SPEED TABLE
Height of
M.P.H Term Effects at Sea Effects on Land Waves, FT.
----- ---- -------------- --------------- ---------
< 1 Calm Sea like a mirror Calm, smoke goes up 0
1-3 Light air Slight ripples Smoke shows direction 0
4-7 Light Breeze Small wavelets Leaves Rustle .33
8-12 Gentle Breeze Large wavelets Leaves, twigs in motion 1-2
13-18 Moderate Waves w/whitecaps Dust, leaves, paper, 2-4
Breeze easily flutter
19-24 Fresh Breeze Moderate waves Small trees sway 4-8
25-31 Strong Breeze Larger waves, spray Larger branches moving 8-13
many whitecaps wires whistling.
32-38 Near Gale White foam from Whole trees move, 13-17
whitecaps hard to walk.
M.P.H Term Effects at Sea Effects on Land Waves, FT.
----- ---- -------------- --------------- ---------
39-46 Gale Higher waves of more Small branches of trees 18-20
length, foam streaks broken, more resistance
47-54 Strong Gale High waves, sea rolls Small building damage
55-63 Storm Very high waves with Trees break, uproot, 20-30
crests, sea looks Large building damage
mostly white.
64-72 Violent Air has much foam, Seldom on land, much 30-45
Storm sea mostly white, damage.
poor visibility.
73-136 Hurricane Air filled w/foam, Very rare on land, > 45
sea completely extremely widespread
white, very little damage.
visibility.