Sea State - World Meteorological Organization Sea State Code

World Meteorological Organization Sea State Code

The WMO sea state code largely adopts the 'wind sea' definition of the Douglas Sea Scale.

WMO Sea State Code Wave Height (meters) Characteristics
0 0 Calm (glassy)
1 0 to 0.1 Calm (rippled)
2 0.1 to 0.5 Smooth (wavelets)
3 0.5 to 1.25 Slight
4 1.25 to 2.5 Moderate
5 2.5 to 4 Rough
6 4 to 6 Very rough
7 6 to 9 High
8 9 to 14 Very high
9 Over 14 Phenomenal
Character of the sea swell
0. None
Low 1. Short or average
2. Long
Moderate 3. Short
4. Average
5. Long
Heavy 6. Short
7. Average
8. Long
9. Confused
Direction from which swell is coming should be recorded.
Confused swell should be recorded as "confused northeast," if coming from the direction of northeast.

Read more about this topic:  Sea State

Famous quotes containing the words world, organization, sea, state and/or code:

    The world itself is pregnant with failure, is the perfect manifestation of imperfection, of the consciousness of failure.
    Henry Miller (1891–1980)

    One of the many reasons for the bewildering and tragic character of human existence is the fact that social organization is at once necessary and fatal. Men are forever creating such organizations for their own convenience and forever finding themselves the victims of their home-made monsters.
    Aldous Huxley (1894–1963)

    I have hardly begun to live on Staten Island yet; but, like the man who, when forbidden to tread on English ground, carried Scottish ground in his boots, I carry Concord ground in my boots and in my hat,—and am I not made of Concord dust? I cannot realize that it is the roar of the sea I hear now, and not the wind in Walden woods. I find more of Concord, after all, in the prospect of the sea, beyond Sandy Hook, than in the fields and woods.
    Henry David Thoreau (1817–1862)

    Once, when lying in bed with no paper at hand, he began to sketch the idea for a new machine on the back of his wife’s nightgown. He asked her if she knew the figure he was drawing. “Yes,” she answered, “the figure of a fool.”
    —For the State of New Jersey, U.S. public relief program (1935-1943)

    Wise Draco comes, deep in the midnight roll
    Of black artillery; he comes, though late;
    In code corroborating Calvin’s creed
    And cynic tyrannies of honest kings;
    He comes, nor parlies; and the Town, redeemed,
    Gives thanks devout; nor, being thankful, heeds
    The grimy slur on the Republic’s faith implied,
    Which holds that Man is naturally good,
    And—more—is Nature’s Roman, never to be
    scourged.
    Herman Melville (1819–1891)