Some of them, specifically those involving undersea plates moving upwards, but even those do settle out quickly. That is why the term literally means "port wav

Some of them, specifically those involving undersea plates moving upwards, but even those do settle out quickly. That is why the term literally means "port waves" because they bypass normal wave protections and move into ports, similar to how tidal bores move up rivers. But the comment above spoke of sea levels being impacted for many days, something beyond even thrust tunamis and more akin to hurricanes.