The known sequence of Maunaloa’s 1868 events began with an eruptive phase beginning at about dawn March 27 at the summit, lasting a couple of hours. Seismicity escalated thereafter, with Kaʻū ...

March 27 marks the anniversary of the onset of Mauna Loa’s dramatic 1868 eruption, when lava flows from the Southwest Rift ...

Geologically speaking, things are always changing at Yellowstone — especially in hydrothermal areas. It’s simply the nature of the complex hydrothermal system overlying one of the planet’s largest ...

From possible impacts to how to prepare, we dive into what we know so far about Anchorage’s closest active volcano and how to ...

Lava spatters inside and flows down the side of the north vent inside Halemaʻumaʻu Crater at the summit of Kīlauea volcano on ...

Consider a can of soda. When the can is closed (pressurized), the soda contains dissolved carbon dioxide (CO2). When you open ...

The Alaska Volcano Observatory said signs indicated a Mount Spurr eruption was likely, though not certain, in the weeks or ...

The new map shows where volcanic ash would fall in the event of a Yellowstone supereruption, with the supervolcano's last ...

A volcano near Alaska’s largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at ...

There are no reports of flights being cancelled, but airlines are apparently operating with restrictions because ash clouds ...

Guatemala’s Volcano of Fire, one of the most active volcanoes in Central America, began erupting overnight going into Monday, March 10, 2025, just 33 miles outside the capital city of ...

Guatemala’s Volcano of Fire is erupting, and authorities have evacuated nearly 300 families while warning that another 30,000 people in the area could be at risk. The eruption started overnight.