Q&A: Spring & Neap Tides From Tidal Stream Chart?

Question by Mic: Spring & Neap Tides From Tidal Stream Chart?
Hi guys, I need to clarify something:

I was looking at the Tidal Stream Chart and the following is seen:

Day 1
Day 2
Day 3
Day 4: New Moon (Spring Tide)
Day 5
Day 6
Day 7
Day 8
Day 9
Day 10
Day 11: 3rd Quater Moon (Neap Tide)

So what are Day 1, Day 2 and Day 3? and Day 5 to Day 10

Best answer:

Answer by carlin
Day 1-2 shuld be relitivley normal day 3&5 shuld be higher than normal6-8 shuld be normal and 9&11 lower than normal. But they will be less afected than the spring and neap tides. Hope that helps;)

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2 Responses to “Q&A: Spring & Neap Tides From Tidal Stream Chart?”

  • Michel Verheughe says:

    Not exactly a question about meteorology but since I am also a yachtsman, here is my humble opinion.

    You are talking about the tidal stream. In nautical almanac, those are shown as speed and direction for each hour after high water at a place of reference. For example, for the British Admiralty charts, it is Dover in England.

    The tidal stream is proportional to the tidal height, which is relative to the moon’s phase. I see: “New moon – Spring tide.” Well, not necessarily. Along the Belgian coast, the spring tide comes about two days after the new and full moon. It varies from place to place. Likewise, the tidal stream doesn’t usually reverse at the moment of high and low water. Along the Belgian coast, it is roughly three hours after low and high water.

    Then you write, seven days after the new moon: “3rd quater.” Well, I have never heard of that. The phases of the moon are usually called, new moon, first quarter, full moon and, last quarter.

    But it is true that the neap tide is usually around seven days (first quarter) after the new moon. The moon accounts for about 60 percent of the tide and the sun, for 20 percent. Then there is about ten percent for the sun’s declination, moon’s declination, etc.

    The actual tidal height can be drawn as a sinusoid. But seafarers often use the simple rule of thumb: 1-2-3-3-2-1 For example, 4 hours after low tide, the height will be: 1+2+3+3 = 9/12th of the tidal difference.

    Otherwise, I don’t understand your chart other than … something is missing. As I wrote, the tidal stream is given as speed and direction hour by hour.

  • Clair Code says:

    xx

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