What does "two feet" mean in this context?
It’s about the tide. I live in a house on pilings over a little bay. El Nino and unusually low barometric pressure have made recent winter tides, the yearly highest in normal years, even higher. This week they’re saying they could be “two feet higher than predicted”.
Does this mean: two vertical feet higher than the surface of the whole bay?
Or, does it mean: two feet “higher” up the slope of the beach?
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