Volcano Watch is a weekly article and activity update written by US Geological Survey Hawaiian Volcano Observatory scientists and affiliates. This photo shows the gap between the south (left) and ...

A swarm of about 28 tectonic earthquakes beneath the northeast side of Mauna Kea, in the Hāmākua region, was detected yesterday.

The USGS Hawaiian Volcano Observatory detected a swarm of about 28 tectonic earthquakes beneath the northeast side of Maunakea, in the Hāmākua region between 2 and 10 p.m. on Thursday, March 26, 2026.

The USGS says a strong preliminary magnitude 7.6 earthquake struck near Tonga in the South Pacific Ocean on Tuesday.

Kīlauea, one of the most active volcanoes in Hawaii, had a series of violent steam explosions in 1924, and scientists discovered the cause.

Geochemical analysis of erupted tephra samples over the past decade help scientists understand the temperature of Kilauea’s shallow magma system under the summit — and things have been “heating up!” ...

A U.S. Geological Survey system glitch triggered multiple false earthquake alerts across Northern California late Monday.

Tonga earthquake today: The Pacific Tsunami Warning Center (PTWC) said there was no Tsunami alert as the earthquake was too ...

More than 700 witness reports have been filed with the USGS.

Mount Shasta presents a unique challenge that most other active volcanoes don't for USGS scientists. The only place to sample ...

Cuba had just started to restore electricity following a total power blackout earlier on Monday, as the United States pursues its oil blockade against the island's communist government.

USGS says a preliminary magnitude 7.6 earthquake struck near Tonga in the South Pacific Ocean. Bold fantasy baseball ...