Three U.S. volcanoes—Alaska’s Great Sitkin and Mount Spurr, and Hawaii’s Kilauea—are showing increased seismic activity, prompting heightened monitoring by scientists. Great Sitkin has reached “Watch” status after small earthquakes and lava emissions, while Mount Spurr has seen a sharp rise in weekly quakes, indicating a 50-50 chance of eruption. Kilauea erupted again in February 2025, sending lava 300 feet into the air.

Experts warn that rising magma levels beneath these volcanoes increase eruption risks, threatening nearby communities with ash clouds, lava flows, and toxic gases. Officials urge residents to stay informed and have emergency plans in place.

Scientists use tools like seismic sensors, satellite imagery, and gas monitors to track volcanic unrest. Historical eruption data helps refine predictions and improve warning systems. With activity escalating, preparedness is key to minimizing impact. Although no evacuations are currently underway, conditions could change quickly if eruptions occur.