A large earthquake struck off Russia this afternoon and the Pacific Tsunami Warning Center is monitoring for a possible tsunami threat to Hawaii. The magnitude 7.5 quake struck at 4:38 p.m. (Hawaii time) near the east coast of Kamchatka, Russia, PTWC officials said.

A 7.4-magnitude earthquake struck off the coast of Kamchatka in Russia’s far east on Saturday, the United States Geological Survey (USGS) said.

A powerful 8.8 magnitude earthquake struck off Russia’s Kamchatka Peninsula, one of the strongest quakes ever recorded. The tremor triggered tsunami waves that reached Japan, the United States, and other Pacific nations.

Closely monitored Barry Arm is a test case in a region where melting glaciers, steep slopes and narrow fjords set up conditions for dangerous tsunami-generating slides.

Over 10 earthquakes have struck off the coast of Oregon in 24 hours…near the Cascadia Subduction Zone, which could trigger a ‘mega-tsunami.’

An asteroid that struck Chesapeake Bay 35 million years ago left a long trail of destruction in its wake, new research suggests.

A massive earthquake and subsequent tsunami off Russia in late July tested an experimental detection system that had deployed a critical component just the day before.

The Hunga Tonga-Hunga Ha'apai volcano erupted for the second time in 2 days, triggering a tsunami that hit the South Pacific Kingdom of Tonga. NOAA's GOES-West satellite captured imagery of the eruption.