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Post Info TOPIC: Supertides


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Supertides
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Widespread flood alerts as 'supertides' rise

Flood alerts have been issued across Wales due to rising "supertides".
Natural Resources Wales has warned of "dangerous conditions" that could see tides breach sea and river defences.

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An astronomical tidal cycle with an 18.6-year period - known as the nodal period - will reach its peak during 2015,
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