Mt. Merapi about to erupt?
Considering she's been active and ready to blow the past 48 hours when the moon is conjunct Jupiter.
Although this planetary combination has been hotly debated, it still has been found to cause the biggest earthquakes and eruptions at times. Especially when the conjunction happens at the FULL moon.
This of course was based on the book "The Jupiter Effect" by astronomers John Gribbin and Stephen Plagemann (1974).