Joseph Neill, the man who disappeared while taking photographs of king tides along the Oregon coastline, has been found dead three weeks after he went missing.

King tides occur when the alignment of the sun and moon combine to add extra gravitational pull on the Earth, causing its oceans to swell. The third and final round of the unseasonably high tides will bring more coastal flooding and hazardous beach conditions to Oregon and Washington.

The final king tide of the season is expected this week from Saturday to Monday on the Oregon coast. King tides are very high tides that generally happen during new and full moons. They can cause big waves and flooding. These waves and high tides can become deadly in seconds. Visitors should always keep their eyes on the ocean when near the beach.

The Oregon Coast’s famed king tides will return for the third and final time this season. Here's when and how to see them.

The earth, moon and sun are locked in a complex but predictable dance that helps produce the tides. These tides change from day to day, but in patterns that