Volcano Eruption Warning System in Indonesia

1. Aktif Normal or Level I .This means that according to visual monitoring, quake and volcanic phenomenon are normal. And no eruption is going to happen in the future.

2. Waspada or Level II means there is an increasing activity visually visible or from the crater check result, quake and other volcanic phenomenon.

3. Siaga or Level III means there is an increasing crater activity visually, quake and other supporting method.

4. Awas or Level IV when initiate eruption of ash or smoke and this will be followed by main explosion.