El Salvador Eruption: Steam Blast Near Hot Springs

In 2025, a steam eruption near a hot springs facility in western El Salvador triggered immediate evacuations and caused damage to local infrastructure. This event took place in terrain shaped by volcanoes and geothermal vents, transforming a known geothermal zone into an emergency area. The Ahuachapán geothermal landscape is part of a volcanic arc along the Pacific coast. This region is characterized by craters, recent lava flows, geysers, and mineral pools, all powered by the Ahuachapán Geothermal Power Plant, which has been operational since 1975.

The plant utilizes groundwater heated to approximately 250 degrees Celsius (480 degrees Fahrenheit) from local fault systems. By the early 1980s, it supplied 40% of El Salvador's electricity, demonstrating the dual nature of geothermal resources—supporting industry while posing risks of sudden steam release. Nearby, Santa Ana is El Salvador's tallest volcano, with a history of eruptions since the 16th century, most recently in 2005. Izalco volcano, active from 1770 to 1966, also contributes to the area's volcanic activity.

The risk of steam activity in this region is underscored by a deadly steam explosion near Laguna Verde volcano in October 1990. The 2025 eruption reiterated the hazard, forcing evacuations and damaging infrastructure. For those working in or visiting the hot springs site, questions remain about access restrictions during ongoing repairs and safety checks, emphasizing the coexistence of volcanic slopes, steam vents, and energy infrastructure in this active zone.