USGS recorded multiple offshore earthquakes across Fiji, Argentina, Vanuatu, and Philippines, while noting Seattle's location on the Cascadia Subduction Zone.

The entities involved

• United States Geological Survey →

  scientific agency of the United States government

  • Tremors were reported in San Jose, California, on September 27, 2026.Sun 15:36
  • USGS monitors impacts of solar activity on Earth as solar flares expose the planet to severe geomagnetic storms.Fri 23:06
• Cascadia subduction zone →

  plate boundary

  • The Cascadia subduction zone is showing signs of fault extension from California into Oregon and British Columbia, prompting tsunami warnings and official guidance.Mon 14:14
  • Tectonic plates are interacting along the Cascadia subduction zone in British Columbia.Mon 14:14
• Philippines →

  archipelagic country in Southeast Asia

  • Marcos met with Chinese Ambassador Jing Quan, while Teodoro's foreign policy remarks were compared to those of Jay Tarriela.Mon 18:00
  • Robert W. McElroy discussed global migrant resilience and journey involving the Philippines and Ethiopia.Mon 16:25