© NASAThe Pavlof Volcano in Alaska is pictured in this May 18, 2013 NASA handout photo taken by astronauts aboard the International Space Station. Situated in the Aleutian Arc about 625 miles (1,000 km) southwest of Anchorage, Pavlof began erupting on May 13, 2013.
An Alaska volcano spewing ash and lava for the past six weeks erupted with new intensity early on Tuesday, belching a plume of cinders 5 miles into sky and onto a nearby town and disrupting local flights, officials said.
The eruptions from Pavlof Volcano, on the Alaska Peninsula 590 miles southwest of Anchorage, were its most powerful since its current eruptive phase began with low-level rumblings in mid-May, according to scientists at the federal-state Alaska Volcano Observatory.
The latest series of more powerful ash-producing blasts from the crater of the 8,261-foot (2,518-meter) volcano started late on Monday and continued overnight into Tuesday, scientists said.
"For some reason we can't explain, it picked up in intensity and vigor," said Tina Neal, an observatory geologist.
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