what time of day will a high or low tide occur doing a full moon. any smart person have a answer.?

Answer 1

In northern California, there are two high tides per day. On the day of the full moon, they usually occur within an hour of noon and midnight (Pacific Standard Time, not Daylight Time). Occasionally, the high tides are up to 1.5 or even 2 hours away from noon and midnight.

This is reasonable, since this is the time when the full moon is highest in the sky or lowest below the horizon, and there is probably a similar pattern in many (but not all) parts of the world.

By the way, I'm referring to the time of the high tides at the Golden Gate. The tides far inside San Francisco Bay may be quite a bit later, because it takes a while for the tide to propagate into the inland waters.

If you're interested in another location, you should find a list of tides for the year, check the full-moon-date for each month, and see what the pattern is.

You can find tide tables at
http://tidesandcurrents.noaa.gov/tides08/
but you'll have to find another site for the dates of the full moon.

-- added later
I did a more detailed check of the high tides at the Golden Gate in 2007, and looked at the 26 high tides before and after the moment of the full moon. Of these, 42% occurred within 1 hour of noon or midnight, 65% occurred within 1.5 hours, and 96% occurred within 2 hours. (The one outlier occurred 2.1 hours before noon.)

It turns out that the these tides are centered on the time 11:24 AM or PM, so a better rule for full-moon high tides at the Golden Gate is the following: The high tide occurs at about 11:24 (AM or PM) plus or minus 93 minutes. This is always true in 2007, and is probably nearly true for any year.

For northern California, this rule is not precise, but it's not bad. If you went to the beach without a tide table, you would have a rough idea of what to expect if you knew the phase of the moon.

As other people have said, there is no simple rule that applies everywhere in the world, particularly in areas with complex coastal topography. (Most of California has a relatively simple coastline open to the Pacific.) Still, if you examine the full-moon high tides at some particular location, you're likely to find a pattern; tides are complex but not as haphazard as some of the answers here would lead you to believe.

-- added much later:

Raymond makes an excellent point about how complex tides can be in certain regions, so I checked the tide patterns at a couple of locations besides California:
1) At Cape May, New Jersey, the times of the full-moon high tides form a very regular pattern similar to that in California. (The times of the tides are different, but the pattern is very consistent from month to month.)
2) Within the Gulf of Mexico, the tide times are really irregular, with no obvious pattern. You can think of the Gulf as an enormous bay, so the water dynamics are very complex.

The bottom line:
- In some parts of the world, there is a consistent pattern for the tide times at the full moon. You really need to look at a local tide table to discover what the pattern is for any particular place.
- In other parts of the world (especially in inland estuaries or areas with complex shorelines), there is no easy pattern.

Answer 2

If you were stopped in the middle of the ocean in the tropics, the tidal bulge would pass you twice: just after the Moon's upper transit (meridian passage) and just after the Sun's upper transit (at which time the Moon is around lower transit).

The reason it is not immediately underneath the Moon (plus the antipodal point) is Earth's rotation that drags the tidal bulge easttward (the rotation is eastward and the shallow sea bottoms slow the progress of the bulges at certain places, so that they lag the Moon's meridional projection).

However, near coasts, it is no longer the tidal bulge that create the tides, but a wave of energy created by the bulge: the shape of the bottom and the shape of the coast itself will affect how this wave travels.

The Bay of Fundy is rather short (when compared to Earth's circumference) and it is open at the west end. The theoretical tidal bulge travels west ward (along with the apparent motion of the Moon) so the bulge itself cannot enter the bay.
Yet that is where the world's highest tides are found. The energy carried to the mouth of the Bay by the bulge goes up the Bay as a wave of energy. The shape of the Bay is that of a funnel so that the energy level of the wave increases even though the total energy decreases as the wave advances.

Another example is the Gulf of St. Lawrence. The bulge creates the energy wave that enters at Cabot Strait. The wave advances northward, along the West coast of Newfoundland, the North Shore of Quebec, Gaspe, New Brunswick, Nova Scotia...

The wave takes such a long time to go around the Gulf that a new wave has started in. It does not matter what time of day it is (relative to the Moon's position), there is always in the Gulf at least one spot where it is high tide and one where it is low tide, at the same time.

It is even possible, if you pick the right times, to find these two spots on the same longitude (therefore at the same angle relative to the Moon's position).

That is why it is difficult, on a coast, to guess the time of high tide (or low tide) based only on the position of the Moon (and Sun).

Answer 3

It depends on the moons astrometic position. When the moon is closer to Earth. The gravitationa pull is stronger in relevence to when it is distant. Check the moon cycle to see when you want your high tide and low tide. Good song btw.

Answer 4

Depends on the location and tide cycles.

Answer 5

Check the tide tables for your area. You can get one at any place that sells boating supplies.

Answer 6

I don't think there is any ONE time of day for thiether event.

It varies.

Answer 7

Depends where you are.