Storm tide

Ebb and flow occur twice a day. Twice a month, the high tide is higher, and the low tide is lower. A lunar month is the time it takes the moon to pass through all its phases. When the gravitational forces of the sun and moon work together, a spring tide occurs. That is when the water reaches its highest level. If this coincides with a powerful westerly to northwesterly storm, the water can rise by another 3 metres. The combination of a spring tide with such a heavy storm is called a storm tide.