Though Pavlof's activity has declined in recent hours, it has been emitting steams of ash since it started erupting in May. According to KTUU, Pavlof's eruption has affected a few flights around the Aleutian Islands and airline representatives said they had their eyes on it.
“Any time you have a volcano going off, you always have an issue. We’ve been watching it since it went off the last time.” ACE Air Cargo’s sales director said.
But Pavlof's 28,000-feet-high plume probably won't be enough to impact air traffic.
"It's a pretty good size, but not high enough to affect overflying aircraft between America and Asia," said David Schneider, a geophysicist with the U.S. Geological Survey. "It's more of a problem for local aviation."
Pavlof, which sits on Alaska's Aleutian Range, has been one of the nation's most active volcanoes since the 1980s.
As for Veniaminof, which started erupting in mid-June, it has emitted plumes reaching 8,000 to 10,000 feet above sea level.