(CNN) – The popular Indonesian tourist island of Bali closed its international airport after Mount Agung volcano blew up more than two kilometers of volcanic ash and fumes.
Denpasar & Ngurah Rai International Airport announced that it will be closed by 7pm. on Friday, at which time the officials would review the situation.
Volcanic activity began on Thursday, causing several airlines to postpone or cancel their flights to Bali prior to Friday's airport closure.
More than 400 flights have been canceled, according to the Indonesian National Disaster Mitigation Agency (BNPB), which affects the travel plans of thousands of people.
The Australian airline Qantas has acknowledged passenger discomfort in a statement, but safety is a top priority.
"Denpasar Airport is currently closed and we are monitoring the advice of the Volcanic Ash Advisory Center, and our team of senior pilots and meteorologists will assess when flights can resume," the statement says. "While these disruptions are frustrating, we always give safety first."
Indonesia is the world's most active volcanic region, located on the Pacific Ring of Fire, where tectonic plates collide, causing frequent volcanic and seismic activity. [1
The volcanic activity had subsided only in February 2018, and the Bali Tourism Office announced that the volcanic arm was downgraded to Level III. However, there is still a 4 km long exclusion zone around the summit of Mount Agung.
The announcement of the Volcano Observatory for Aviation continues to set the level of activity at Mount Agung in Orange, Level III, fixed no eruption.
Officials predicted that the ash cloud would move west and southwest of the island, saying that an increase in earthquake tremor could occur.