Mount Spurr, an 11,000-foot-tall volcano on the Cook Inlet about 75 miles from Anchorage, has a 50-50 chance of spewing out hot magma and ash that could be toxic for humans to breathe, the Alaska Volcano Observatory (AVO) warned in a code yellow advisory.
A spokesperson for AVO said: "We expect to see additional seismic activity, gas emissions, and surface heating, as well as changes to surface deformation prior to an eruption, if one were to occur.
"Past Crater Peak eruptions were often explosive, and far-traveled ash clouds and ashfall can be expected if an eruption occurs," AVO said Anchorage is the largest city in the state, boasting about 300,000 people, who are potentially at risk.
"This particular volcano is probably the best-monitored submarine volcano in the world," said Mike Poland from the Yellowstone Volcano Observatory, as reported by the Cowboy State Daily.
AVO explained that the "duration and nature of the unrest suggests that an eruption is possible," adding that it would most likely occur at the Crater Peak vent.
