You would never think a 30-foot tidal wave would destroy your house.

This nation is about to be hit with a tidal wave of new retirees. In just six years, the baby boomers will begin to retire. The demands on Social Security and Medicare will be dramatically increased, ... This is no time to divert Social Security and Medicare funds to other purposes.

It's not a tidal wave now, but the ingredients are starting to fall into place.

Wild waves rise and fall when they arrive
And that’s what makes the calm sea alive

Everything she knew about him rushed through her mind like a tidal wave.

And in the parking lot are the two suspects. As the officer approached, the suspects fled on foot.