Over the past week, geology news in the United States has focused on volcanic activity, seismic research, and national outreach. The United States Geological Survey reports that the Kilauea volcano in Hawaii remains active and closely monitored. The lava fountaining episode that lasted six hours ended on October first, but incandescence at both the north and south summit vents indicates magma is still close to the surface. Seismic harmonic tremor picked up again on October fourteenth, signaling increased underground movement and suggesting a new eruption episode is likely to begin between October seventeenth and twenty-second. Kilauea’s summit region continues to show inflation, a key precursor to eruptive events, underscoring the importance of continuous monitoring even during lapses in federal appropriations, which currently limit website updates.

Meanwhile, Yellowstone National Park displays typical background activity. The Yellowstone Caldera experienced eighty-seven minor earthquakes in September, the largest being magnitude three point three, about fourteen miles south-southwest of Mammoth Hot Springs. Seismic swarms have occurred, but no major volcanic eruption is expected according to the latest update. The annual summertime uplift and pause in subsidence, driven by snowmelt and groundwater conditions, continues, with the caldera rising by roughly one and a half centimeters since late May. Ongoing sporadic minor eruptions of Steamboat Geyser, along with the first activity in over twenty years from Valentine Geyser, provide further insight into the dynamic hydrothermal system at Yellowstone.

Earth Science Week, celebrated from October twelfth to eighteenth, has drawn attention to earth energy resources and responsible stewardship. Multiple public events, educational workshops, and outreach programs are underway across the country, aiming to engage people of all ages in the science behind energy choices and sustainable resource management. This year’s theme, "Energy Resources for Our Future," highlights the importance of geological knowledge for planning and managing future energy needs and environmental impacts.

Elsewhere in geological research, new studies on fault systems have raised interest about earthquake risks for the US West Coast. Science magazine reports that recent research suggests the Cascadia Subduction Zone and the San Andreas Fault may trigger large quakes in sequence. Such a scenario, a so-called one-two punch, could lead to severe impacts across California and the Pacific Northwest, bringing renewed urgency to preparedness planning and further investigations into fault behavior and seismic hazard assessment.

Finally, the importance of satellite geodesy and remote sensing continues to grow. Major academic and professional meetings this month, including the hybrid GRACE-FO Science Team Meeting in Boulder, Colorado, are driving advances in technology and data sharing that support the ongoing evolution of earthquake and volcano monitoring across the United States and worldwide. These efforts demonstrate the critical role of geology in understanding natural hazards and shaping resilient communities.

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