A. Situation analysis
On 22 September 2017 at 20.30, Indonesian Authorities (PVMBG) increased the status of Mount Agung in Bali from Level Three (High Alert: Orange/Ready to erupt) to Level Four (Red alert/Danger), the highest level for a volcano. Three weeks later, it remains at the highest level. Hundreds of small quakes continue to occur daily. The Centre of Volcanology and Geological Hazard Mitigation (PVMBG) stated that the tremors have been increase to about 600 – 800 per day. This may indicate that magmatic activity at shallow depths is still high. Gas emissions from the crater appear as thin to thick white clouds that reach a height of 50-200 meters above the crater rim. Satellites have detected steam emissions and thermal areas within the summit crater.
People have been evacuated from within 9km of the crater and within 12km to the north, north-east, south-east and south/south-west of the mountain.
Initially the government was planning for roughly 70,000 people to be evacuated, but those numbers are now much higher. More than 138,000 people are currently in evacuation centres, dispersed across 9 districts in more than 350 locations. The majority of evacuees are in Karangasem, Klungkung and Buleleng. More than 50,000 are in Karangasem, the 523 square kilometres district surrounding the volcano. The evacuees are staying in temporary shelters, sports centres, village halls as well as with relatives and host families.