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A series of tremors near a volcano in Alaska in recent weeks are probably a sign of an approaching eruption, AP reported, quoted by BTA.

The volcano has been inactive for over a century.

However, increased seismic activity may herald an eruption.

The Alaska Volcanic Observatory raised the watch level for Tanaga Volcano after tremors intensified.

Volcanic activity after the earthquakes startled the Turks

We detected multiple tremors, one after the other, within a minute, said John Power, a geophysicist at the Alaska Observatory.

Hundreds of earthquakes with a small magnitude, no more than 2.75, have been registered on the territory of the volcano. 

The volcano is not calm, commented Power.

"For now, we can't say whether this will lead to an eruption or not. But we've raised the new alert anyway."

Many seismic activities end without an eruption, the geophysicist added. 

If the volcano erupts, flights will be affected.

The volcano is located on an uninhabited island in the Western Aleutian Islands, about 2,000 km southwest of Anchorage.

A village with about 170 inhabitants is located on a neighboring island, 105 km from the volcano.

The volcanic ash could also be seen from there. 

The Tanaga volcano is 1,806 m high. Its last recorded eruption was in 1914. The volcano had previously erupted twice in the late 18th century and in 1829. 

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