Another nearby volcano that erupted in 2009, Mount Readout, showed volcanic tremor for two months before it blew its top. "If we see [tremor]," Haney said, "that will be the next sign that Spurr ...

This activity is driven by shifting tectonic plates in East Africa, which allow magma to reach the surface. Observing Nyamulagira (or Nyamuragira), a massive basaltic shield volcano, from space is ...

Mount Spurr, located about 75 miles West of Anchorage, has been acting up in recent weeks, prompting officials at the U.S. Geological Survey and Alaska Volcano Observatory to issue a yellow alert.

Elevated levels of volcanic gas and earthquakes have been recorded at the site. Alaska's Mount Spurr, an active volcano near the most populated region in the state, is getting even closer to an ...