This video from Nature illustrates the powerful impact of a volcanic eruption in Hawaii and traces the lava’s activity from cone to sea. The sea is the only natural substance that can stop a lava flow and it’s an explosive event. These explosions create littoral cones, or more simply, a newly-formed coastline. When the 80 degree water meets 2,000 degree lava, massive amounts of steam surge into the air, which can create miniature weather patterns. While the weather is localized, serious climatic changes like tornados can occur.
Learn more about the Nature film "Kilauea: Mountain of Fire."