Some Alaskan schools are making preparations in advance of what scientists say is an "imminent" eruption from the 10,200-foot Redoubt Volcano, about 100 miles southwest of Anchorage.

Scientists from the Alaska Volcano Observatory (AVO) set the observatory's alert level on a "watch" for a possible eruption after the mountain experienced tremors and elevated seismic activity, including a sharp increase in earthquakes underneath the mountain.

Geologists flew to Mount Redoubt to collect gas samples and look for signs of an eruption after a steam plume was again spotted Feb. 7, near a dome that formed after the last eruption in 1990.

Alaska's volcanoes are


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