"It's not one that's going to cause mass devastation. But it will cause coastal flooding and it will cause damage and it does put lives at risk if people don't move to high ground," an oceanography professor says.

Cars crowded evacuation routes in Honolulu after a massive earthquake across the Pacific spread fears of a devastating tsunami.

Tsunami waves have reached Hawaii and California after a powerful earthquake occurred off the coast of Russia. Here's what you need to know about the tsunami's impact and how long it might last.