Increased Activity at Three U.S. Volcanoes Has Scientists on Alert

Three U.S. volcanoes—Great Sitkin and Mount Spurr in Alaska, and Kilauea in Hawaii—are showing signs of increased activity, and scientists are keeping a close eye on them. Great Sitkin has been elevated to “Watch” status due to a rise in small earthquakes and ongoing lava flow. Mount Spurr has experienced a sharp uptick in weekly quakes, giving it about a 50/50 chance of erupting. Meanwhile, Kilauea erupted again in February 2025, shooting lava as high as 300 feet into the air.

Experts warn that rising magma levels beneath these volcanoes are increasing the risk of eruptions, which could endanger nearby communities with ash clouds, lava flows, and harmful gases. Local officials are encouraging residents to stay updated and have emergency plans ready, just in case.

To monitor the situation, scientists are relying on seismic sensors, satellite imagery, and gas detectors. They also use historical eruption data to improve forecasting models and early warning systems. While there are no evacuation orders in place right now, that could change quickly if conditions worsen.

The bottom line: volcanic activity is heating up, and staying prepared is the best way to stay safe.