Mount Rainier earthquake swarm explained; what’s behind the volcano’s biggest tremors in 15 years?

Mount Rainier experienced a significant earthquake swarm, the largest since 2009, with hundreds of small quakes detected near the summit. Experts attribute the tremors to hydrothermal fluids interacting with pre-existing faults beneath the volcano. Despite the increased activity, the volcano remains at Alert Level GREEN and Color Code NORMAL, indicating no imminent eruption or threat to air traffic.