When perigean tides coincide with spring tides, extreme tides can be expected. |
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For Hurricane Bill, waves were weaker than Juan hitting the shore, it did not occur near a perigean spring tide and the surge was less. |
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There was also a strong surge, but the total water level was not as high due to a perigean neap tide, which averaged 50 cm lower than the perigean springs of the previous weekend on the Atlantic Coast. |
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Thirdly, the Atlantic coast of Nova Scotia experiences two daily high tides, opening two windows of flooding-opportunity each day during a run of perigean spring tides. |
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The Highest Astronomical Tide is the perigean spring tide when both the sun and moon are closest to the Earth. |
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The perigean tides are the spring tides that occur soon after the Moon passes its perigee. |
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Perigean spring tides are outstanding, while apogean spring tides hardly differ from average tides. |
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