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Small magnitude earthquakes were detected at Mount Rainier in July and August of 2025, according to monitoring stations operated by the U.S. Geological Survey (USGS). The seismic activity prompted increased monitoring of the volcano, though officials have not indicated any change in the overall threat level.

The USGS reported the earthquakes were relatively small, not indicative of an impending eruption. Similar monitoring is also underway at Mount Baker, as reported by Cascade PBS, where preparations for potential seismic events are ongoing. The monitoring at both volcanoes reflects a broader effort to understand and mitigate risks associated with the Cascade Range’s volcanic arc.

The recent activity at Mount Rainier follows advancements in earthquake monitoring technology. Researchers at Stanford University’s Doerr School of Sustainability have developed an artificial intelligence model capable of identifying hidden earthquake swarms and faults, demonstrated recently in Italy’s Campi Flegrei region. Similarly, machine learning techniques are being applied to historical seismic data at Yellowstone caldera, as reported by PreventionWeb.net, revealing previously unknown patterns of activity.

These technological advancements are being integrated into existing monitoring networks, enhancing the ability to detect and analyze seismic activity around potentially hazardous volcanoes. The USGS has recently upgraded its data collection and analysis capabilities, partially funded by donations from the public, and has added additional seismic data sources to its monitoring systems. Planned improvements include enhanced multilingual support and the implementation of tsunami alerts.

The Volcanoes & Earthquakes app, available for both Android and iOS, provides users with real-time seismic and volcanic alerts. The organization behind the app continues to seek donations to support its mission of providing uninterrupted updates and expanding its services.