Order of events when a volcano erupts

Earthquakes, gas emissions, ash/steam venting, lava buildup, dome collapse, explosion, eruption.

Explanation:

1 Earthquakes - swarms of earthquakes happen first.

2 Gas Emissions - gas begins to emit from the volcano.

3 Ash/steam venting - ash and steam begin to fill the air.

4 Lava Dome Buildup - lava builds up, getting closer to the dome of the volcano.

5 Dome Collapse - the dome collapses, leaving the lava free to burst out.

6 Magmatic Explosion - magma begins to escape from the volcano.

7 Pyroclastic Eruption - finally, the volcano erupts.

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