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Unusually high tide at East Coast raises brows
Beachgoers at East Coast over the Christmas weekend might have been surprised by unusually high tides, which ran up the beach and filled the canals that drain into the sea.
The recorded tide on Christmas Day was 3.4m, said the Maritime and Port Authority of Singapore. That is 0.2m higher than the predicted level, which is based on the movements of the moon and sun, it added.
'It is normal to record a higher spring tide during the north-east monsoon and the difference is mainly due to meteorological factors largely due to strong or prolonged winds,' a spokesman said.
A spring tide occurs when the moon is full or new, the moon and sun are aligned, and the gravitational pull of both is strongest; at those times, maximum tides are very high and minimum ones are very low.
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