Pavlof's ash column has reached as high as 22,000 feet (7,000 meters), forcing regional airlines to occasionally delay or cancel flights to local villages and towns. Ashfall has been reported in nearby communities, including Sand Point, Nelson Lagoon, King Cove and Cold Bay, according to the AVO.
The ISS astronauts shot the photos while 475 miles south-southeast of the volcano on May 18 using a Nikon D3S digital camera with 800, 400, and 50 millimeter lenses, respectively, reported NASA Earth Observatory.
Geoscientists are also monitoring an ongoing eruption at Cleveland volcano farther to the west in the Aleutian Islands. With no seismic network at the remote site, volcanologists rely on satellites and infrasound - low-frequency sounds created below the range of human hearing - for eruption monitoring at Cleveland volcano.