Scientists have raised concerns after the alert levels for three U.S. volcanoes were upgraded due to increased activity. The ...

A volcano near Alaska’s most populous city may be preparing to erupt, according to experts who have been monitoring the ...

Mount Spurr, whose volcanic ash darkened Anchorage’s skies in 1953 and 1992, may be building toward another eruption.

Mount Spurr, a volcano near Alaska’s largest city, Anchorage, is showing strong signs that it could erupt based on ...

Mount Spurr is not the kind of lava-spewing volcano familiar from Hawaii, but instead has historically ejected huge plumes of ...

Matt Loewen/Alaska Volcano Observatory/U.S. Geological Survey The 1992 eruptions began in June of that year following about three weeks of volcanic tremor, Haney said. The 11,070-foot volcano ...

"It's about a 50/50 chance right now," said Matt Haney, the scientist in charge of the Alaska Volcano Observatory in Anchorage. "So it's equally likely it will or will not progress to an eruption." ...

according to a Feb. 6 statement from the Alaska Volcano Observatory. The unrest suggests "that an eruption is possible," officials said. Since April, the number of earthquakes under the volcano ...

The last time it erupted was in 1992, and before that, 1953. Scientists at the Alaska Volcano Observatory have reported ...