• Increased rate of uplift near South Sister volcano, Oregon

    Cascades Volcano Observatory geophysicists have detected a subtle increase in the rate of uplift of the ground surface about 5 km (3 miles) west of South Sister volcano, Oregon, U.S. Episodes of increased uplift have been observed in this area before, and the…

  • Series of strong earthquakes hit off the coast of Oregon, U.S.

    A series of earthquakes hit off the coast of Oregon, U.S. on December 7 and 8, 2021. The quakes are taking place at a shallow depth of about 10 km (6.2 miles), some 500 km (320 miles) W of Salem, Oregon. The swarm, located about 360 km (200 miles) west of the…

  • Large fireball seen crashing over Salem in Oregon, U.S.

    A fireball was spotted over the skies of Salem City, the capital of coastal state Oregon, crashing somewhere in the wilderness of Polk County on Thursday evening, November 21, 2019. Police officers have since started conducting investigations. The event was…

  • Very shallow M6.3 earthquake hits off the coast of Oregon, U.S.

    A strong and shallow earthquake registered by the USGS as M6.3 hit off the coast of Oregon, U.S. at 15:07 UTC on August 29, 2019. The agency is reporting a depth of 5.4 km (3.3 miles). EMSC is reporting M6.3 at a depth of 2 km (1.2 miles). The epicenter was located…