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[–] CowWithBeef 0 points 5 points (+5|-0) ago  (edited ago)

Not quite. We don't actually know how it acts prior to an eruption. The probability seems low because normal sized volcanoes are much more seismicly active prior to eruptions, but supervolcanoes lack data. It's possible they just pop. The main comfort is the thickness of rock above the magma is large enough that it looks physically impossible to suddenly break it. News that the crust is thinning rapidly or cracking would be alarming. Earthquake clusters are not worth the alarm they cause, but people love the drama.