An ash-and-steam plume from Santa Ana towers above Coatepeque caldera lake. The one-hour explosive eruption the morning of 1 October 2005 produced plumes that rose 10 km or more. Ash fell in towns west of the volcano and extended into Guatemala. Volcanic blocks up to a meter in diameter fell as far as 2 km south of the summit. Lahars descended valleys on the flanks of the volcano.

Photo by José Roberto Lopez, 2005 (Coatepeque Watershed Authority).

This image is made available under the Creative Commons BY-NC 4.0 license terms.

Galleries: Explosive Eruptions | Magma / Water

Keywords: eruption | explosive eruption | phreatic | lava water interaction | steam | ash plume | plume

Coatepeque Caldera

Santa Ana