While the USGS scientists learned plenty about volcanism in El Salvador during this trip, it also provided key insights to bring home to our own volcanoes. Explosive eruptions in Hawaii are relatively rare, but the ability to correctly interpret their deposits is critical to understanding potential future hazards.

Nearly 600 years ago, a massive volcanic eruption sent clouds of sulfurous gas and ash high into the atmosphere. The blast known as the 1458/59 CE event was so huge that it triggered decades of cooling, especially in the Northern Hemisphere. Although it ...

A new satellite image has captured a rare view of an erupting volcano, revealing its bright red lava flow as seen from space. This image taken by NASA's Landsat 8 satellite captures lava, ash, and gases flowing from Mayon, the most active volcano in the ...

A funnel cloud of spinning ash was caught on camera over the weekend, whirling around an eruption from the Kilauea volcano in Hawaii. Kilauea, located in Hawai'i Volcanoes National Park, experienced a five-hour eruptive episode on Sunday, Nov. 9, according ...