This 11,070-foot stratovolcano sits 81 miles west of Anchorage ... closely as the mountain shows signs of a possible volcanic eruption. The Alaska Volcano Observatory (AVO) has recorded more ...

The 1980 Mount St. Helens eruption began with a steady series of earthquakes in March. By April it began spewing smoke, ...

An eruption could impact the most populated ... In this Dec. 16, 2020, file photo, Mt Spurr, an active large stratovolcano that last erupted in 1992, is shown along the western edge of Cook ...

When a cinder cone erupts over and over, it can evolve into a stratovolcano. Stratovolcanoes are cone-shaped volcanoes that build up from layer after layer of lava and ash, one eruption at a time.

Stratovolcano eruptions are often explosive because the lava is thick, meaning it traps gas easily. Mount St. Helens and Mount Vesuvius are both stratovolcanoes. Related: Huge steam plume rises ...

which often results in explosive eruptions like that seen at Washington Mount Saint Helens in 1980. This undated photo shows Mount Ruang, a 2,400-foot stratovolcano on Ruang Island, North Sulawesi ...

Mount Rainier, the massive stratovolcano in Washington state, has remained dormant for over 1,000 years, but experts caution that an eruption is inevitable. If it were to erupt, the consequences ...

Mt. Etna, an active stratovolcano, looms over Sicily, Italy, and recently, it's begun to erupt, producing red-hot lava. The display of seismic activity has drawn numerous visitors, including Marco ...

Then there's Strombolian eruptions. Named after the stratovolcano Stromboli, these eruptions are short in duration and have explosions that generate small plumes known as fire fountains that reach ...

Significance of the 1815 Mount Tambora Eruption Mount Tambora is a stratovolcano on the Sumbawa island in Indonesia. The volcano resides along the Sunda Arc — a chain of volcanic islands. Though it ...

The active stratovolcano is known for its frequent and persistent eruptions and volcanic activity in the region can range from explosive eruptions to lava flows and ash emissions, USGS says.