Explainer: St. Vincent on alert after La Soufriere volcano becomes active

A volcano on Saint Vincent shows signs of erupting, prompting evacuation warnings. Observations reveal an effusive eruption and a new lava dome. The volcanic activity is due to the subduction of tectonic plates, forming stratovolcanoes that can erupt through steam-driven processes.

How does the subduction of the North American Plate affect volcanic activity in the eastern Caribbean?

What is a steam-driven eruption and how does it occur?