Weather Explainers

What Is A Coastal Flood Advisory?

Coastal flooding can happen even when the sun is shining. Here’s what causes this hazard and why it’s getting more common.

By Sara Tonks • 2 hours ago

Here's The Difference Between A Flash Flood Warning Vs Emergency

As the name suggests, a coastal flood alert refers to flooding. But instead of accompanying heavy rain, coastal flooding happens when water levels rise in large bodies of water (an ocean, one of the Great Lakes, etc.), inundating areas that are typically dry.

This can happen because of strong coastal storms causing large waves and pushing water onto the land or during abnormally high tides, like king tides .

King tides are also often called “sunny day flooding,” because they can cause flooding when there is

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