It’s important to remember this particular volcano has erupted many times throughout recorded history, with the latest being in 1971 (and 1949 prior to that). Just because the volcano may blow does not mean the entire island is going to break off. And if the island did break off, which is unlikely, it may not even cause the massive waves that are possible but not guaranteed. Take some deep breaths and pray. Just last December people were worried about this scenario but nothing came of it. With that being said, I have had a bad feeling about this for some time. If you live in the danger zone, pay close attention and have a reliable escape route. Make friends with some pilots.