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Warning as threat levels for three US volcanoes are elevated
Scientists are on high alert after threat levels rose for three US volcanoes Thursday ... And those factors were enough to ...
CNN4d
An eruption is possible at Alaska’s Mount Spurr. What we know about the volcano
As of February 15, the observatory listed Mount Spurr’s volcano alert level at advisory ... In 1953, the columns of ash the explosions produced rose up to 65,000 feet above sea level and ...