It is like a 24 hr flow of all the rivers of the world! Or here is another example: In a single tidal cycle of the same 12 hours, about 110 billion tons of water flow in and out of the Bay of Fundy. To see how much it is, look at this: The average tidal range worldwide is "just" about 3.3 ft (0.9-1 m). So it has extremely high tides of about 50-52 ft or 16-17 meters during some parts of the month. The mean tide range for this place is around 38.4 ft (11.7 m).Īt the same time, some tides are higher than others in this bay, because, as we have already learned, it also depends on the position of the Moon and the Sun, and weather conditions. Let's take as an example a tide table of the place with the highest tide in the world - Burntcoat Head in the Minas Basin in the Bay of Fundy between New Brunswick province and Nova Scotia province and peninsula, Canada. Time indicates when the water level in this location will reach a maximum or minimum. So usually, the tide table for one day is four times and four corresponding heights in feet or meters, and also a “high” or “low” mark. The tides are semidiurnal, meaning they have two highs and two lows each day with about six hours and 13 minutes between each high and low tide. ![]() These "four times" tides are called semidiurnal tides and are common on the east coast of the United States. Photo: Hai-nguyen / Unsplash How to read a tide table?ĭepending on location, high and low tides may occur once, twice, or even four times a day. Tide charts are only available for certain territories and may be classified. These maps normally show water levels on an hourly basis after high tide. These are maps that show water levels throughout a bay at a particular point in time. Important: Don't confuse tide tables with another source of tide information - tide charts. Tide tables are needed even for those who hike or do coastal walking - so that you correctly calculate the time at which you can safely walk through a route on the shore or make a fire by the ocean. Surfing - so that you aren't carried away far from the shore. ![]() Fishing - so that you know the level of water and catch as many fish as possible.Yachting - so that you don't run aground and reach the port safely.Tide tables are necessary for everyone, including outdoor enthusiasts practicing different types of sports, mainly water sports, but not only. These tables make it possible to pre-calculate the time and heights of high and low waters, as well as the heights of levels at intermediate moments with sufficient accuracy for practical purposes. Tide tables show high and low tides, indicating the time and height of these water level for a particular coastal area. And also Windy.app team made a presentation about how to read the surf/swell forecast with examples and tips from professional surfers with many years of experience riding the biggest and best waves. This is the main source of information about tides. To predict tides we use tides tables, also sometimes called tide schedule, prediction, report, forecast, etc. Learn more about how tides work from this article. It is a result of changes in the position of the Sun and Moon relative to the Earth and the effect of their gravitational forces on the ocean. Tides are periodic fluctuations of ocean level that occur once, twice, or four times a day depending on the place. What is a tide table as a source of information about tides? Let's learn more about what it is, how to read a tide table, and where to get reliable tide forecasts for your sport or outdoor activity. To predict tides we use tides tables - the main tool for getting information about tides.
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