Officials from Japan to California issued warnings after an 8.8-magnitude quake off Russia’s coast. Hours later, there were no immediate reports of major damage, although some areas remained on alert.

An 8.8-magnitude earthquake off Russia's Kamchatka Peninsula shook the Pacific, but its tsunami fizzled. A geologist explains why.

One of the world’s strongest earthquakes struck Russia’s Far East on Wednesday as an 8.8-magnitude tremor set off a tsunami in the northern Pacific and prompted warnings for Alaska, Hawaii and south toward New Zealand.