Residents ride in a truck as Mount Sinabung releases pyroclastic flows during its eruption in Karo, North Sumatra, Indonesia, Wednesday, Aug. 2, 2017. The volcano blasted volcanic ash as high as 4.2 kilometers (2.6 miles), one of its biggest eruptions in the past several months of high activity. (AP Photo/Endro Rusharyanto)
A villager carries his belonging during an evacuation following the eruption of Mount Sinabung in Gamber village, North Sumatra, Indonesia, Sunday, May 22, 2016. The volcano in western Indonesian unleashed hot clouds of ash on Saturday, killing several villagers, oficials said. (AP Photo/Binsar Bakkara)
In this late Monday, Oct. 13, 2014 photo made with a slow shutter speed, lightning caused by volcanic materials containing electric charges that collide into each other is seen as Mount Sinabung erupts in Jeraya, North Sumatra, Indonesia. Mount Sinabung, among about 130 active volcanoes in Indonesia, has sporadically erupted since 2010 after being dormant for 400 years. (AP Photo/Binsar Bakkara)
(SOURCE) In this photo made with a slow shutter speed by Binsar Bakkara, volcanic lightning is seen from Jeraya village, about 7 kilometers from erupting Mount Sinabung in Indonesia’s North Sumatra province. The 2,600-meter (8,530-foot) volcano released hot clouds six times Tuesday. The volcano’s alert status remains at the third-highest level, advising residents to stand ready to flee if conditions worsen. More than 3,200 people are staying in 16 temporary shelters due to Sinabung’s recent eruptions.