With a Better Understanding of Physics, We Could Predict Volcanic Eruptions

In 1991, Mount Pinatubo erupted in the Philippines, killing over 800 people and affecting an estimated 250,000 residents due to the massive ashfall. Scientists from the US and Philippines deployed instruments to monitor the volcano, but at the time, their understanding of volcanic activity was limited. This led to a rapid geological assessment, which concluded that "when this thing erupts, it only erupts big."

Even with this knowledge, Pinatubo's eruption was an unexpected event, and scientists were unable to provide a precise forecast of the eruption or its magnitude. Since then, volcanology has made significant progress, with advanced instrumentation, machine learning for data interpretation, and a better understanding of the magmatic plumbing that drives volcanic activity.

This has raised the question of whether scientists can now forecast volcanic behavior as accurately as meteorologists predict weather. While weather affects everyone daily, volcanism impacts around 800 million people living within 100 kilometers of an active volcano. Although both systems are complex, the main difference lies in their visibility and measurability.

Seismometers, ground sensors, satellites, and gas detectors are used to monitor volcanic activity, but these tools only provide a form of acute caution, not a precise prediction. Some volcanoes, like Stromboli and Etna, allow for confident forecasting of eruptions, while others can ambush observers without any discernible warning signs.

With more comprehensive monitoring and a deeper understanding of volcanic processes, scientists may one day be able to predict volcanic eruptions with the same level of accuracy as weather forecasts.