Topline: Tsunami waves reached the coast of northern California early on Wednesday, as authorities downgraded warning levels in Hawaii, Japan, and most of California, Washington and Oregon hours after ...

TOKYO (AP) — A powerful 7.5 magnitude earthquake struck off northern Japan late Monday, injuring 23 people and triggering a tsunami in Pacific coast communities, officials said. Authorities warned of ...

TOKYO — Tsunami alerts were issued across much of the Pacific on Wednesday after an 8.8 magnitude earthquake off Russia’s far east. Here are key facts about tsunamis and the damage they can cause: A ...