earthquake News

West Coast Quake Warning System up and Running

Automated alerts from the fledgling West Coast earthquake early warning system are ready to be used broadly by businesses, utilities, schools and other entities but not for mass public notification, officials said Wednesday. “We’re making a large change from a …

Small Temblor Shakes Inland Southern California Area

Some inland Southern California communities received an early morning jolt from a minor earthquake, the U.S. Geological Survey confirmed. The USGS says the magnitude-3.4 tremor occurred at 5:44 a.m. Thursday. The quake was centered 2 miles southwest of San Bernardino …

Seismic Activity Increases Around Alaska Volcano

The Alaska Volcano Observatory is keeping watch on a remote volcano that’s showing signs of erupting. The observatory this week increased the alert level from “advisory” to “watch” at Semisopochnoi (SEM-ee-sah-POTCH-noy) in the Aleutian Islands. The volcano is on an …

Earthquake Jolts Southwestern Utah Desert

A small earthquake hit the southwestern Utah desert overnight. The University of Utah’s seismograph stations recorded the 3.8 magnitude earthquake just before midnight Tuesday. The epicenter was 15 miles northwest of Cove Fort, a historical site in Millard County. The …

California Bridge Under Construction Gets Sensors to Gather Earthquake Data

A replacement bridge under construction at the second-busiest port in the U.S. isn’t just a crucial route for cargo trucks and Southern California commuters – it’s a concrete-and-steel science experiment for engineers and seismologists. The new bridge, which will stretch …

M6.3 Earthquake Confirmed on Remote Alaskan Island

A magnitude 6.3 earthquake struck Wednesday night in Alaska, the Alaska Earthquake Center confirmed. The center reported the quake occurred in the remote Andreanof Islands region of Alaska, but was felt almost 70 miles away in Adak. It had a …

Researchers Use Supercomputers to Quantify Quake Risk Across San Francisco Bay Area

Scientists and engineers are simulating precisely how a large-magnitude earthquake along the Hayward Fault would affect different locations and buildings across the San Francisco Bay Area. A team from Lawrence Berkeley National Laboratory and Lawrence Livermore National Laboratory, both U.S. …

Another Building in San Francisco Appears to Be Sinking

A few blocks from the 58-story Millennium Tower, dubbed “the leaning tower of San Francisco,” another building appears to be sinking. An 18-story building in the city’s financial district appears to have settled up to three-eighths of an inch because …

2014 Napa Quake Could be Linked to Groundwater Changes, Study Shows

Research suggests the magnitude 6.0 earthquake that rocked California wine country in 2014 may have been caused by an expansion of Earth’s crust because of seasonally receding groundwater under the Napa and Sonoma valleys. The vineyard-filled valleys flank the West …

Oregon Earthquake Simulation Reveals Dangers

Researchers at Oregon State University say bridges and roads in the northwestern resort city of Seaside should be prioritized for improvement after a simulation discovered they would have higher mortality rates in an earthquake and tsunami. Researchers found that the …