A recent study reveals that the Poás volcano has changed its eruption pattern, redefining the global ash-related risk map.

Understanding what triggers large volcanic eruptions is crucial for hazard assessment, but the exact mechanism driving these ...

The magma reservoir of the largest volcanic eruption of the Holocene is refilling. This Kobe University insight on the Kikai ...

Kīlauea’s 2026 eruption shows increased lava fountains and ash spread, with volcanic plumes affecting communities up to 50 ...

Tephra is fragmented volcanic material — including ash, rock and strands of volcanic glass — blasted into the air during an ...

This value is usually about 2,100 to 2,190 degrees and can be measured in a few different ways. Calibrated thermal ...

SHOCKING footage shows the moment a volcano erupted in the Philippines, sending an ash cloud shooting three miles into the ...

After nearly 12,000 years in dormancy, a volcano in Ethiopia has erupted and hurled ash over unsuspecting communities. It's assumed that Hayli Gubbi, located in the Afar region of northeastern ...

A remote volcano in Ethiopia’s Afar region, which had been silent for nearly ten thousand years, erupted without warning over the weekend. It sent a large column of ash rising about 15 kilometres into ...

Volcano Watch” is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory ...

Volcano eruption on the French island of La Rèunion creates 'lava haze' as it reaches the Indian Ocean ...

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