Not Only San Andreas — California’s Next Big Hazard Could Be A VOLCANO, USGS Warns

The U.S. Geological Survey (USGS) has warned that California’s next big hazard could come in the form of a volcanic eruption—not a massive earthquake, landslide or wildfire, which the state is often known for. In a report released Monday, the USGS said that at least 10 volcanic eruptions have taken place in the past 1,000 years and that “future volcanic … Continue reading

Mexico City’s Powerful 7.1 Quake Could Be Sign that San Andreas Fault to Blow Soon … ish

Experts have warned for years that the proverbial “big one” is just around the corner for the Golden State, but after Mexico City’s powerful 7.1 quake, the San Andreas Fault could be closer than ever to a large earthquake. Days after Mexico’s earthquake killed more than 200 people, California was struck by a handful of its own, ranging from a … Continue reading

100+ Earthquake Swarm Hits Brawley 30 Miles from San Andreas Fault

A swarm of more than 100 small earthquakes hit Brawley, a small city situated only 30 miles from the San Andreas Fault, on Saturday. The biggest tremor so far was a 3.9 magnitude, but USGS said larger quakes were possible and the shaking may continue for several days. Three days ago, Nevada was hit by a strong series of earthquakes. … Continue reading

San Andreas Catastrophe Could Be Much Worse Than Previously Thought, Fault Could Rupture Along Its Entire 800-mile Length

It was previously believed that “The Big One” could only occur in confined segments, and this new information is now being used by insurers to make some unnerving predictions. For years, the scientific consensus was that a statewide earthquake couldn’t occur in California. But a 2014 study by federal, state and academic researchers determined that a quake that begins at … Continue reading

New Type of Earthquake Discovered By Scientists In California

Researchers in southern California have discovered a new type of earthquake that can occur a lot deeper than expected – more than 24 km (15 miles) deep, in Earth’s upper mantle. This new type of earthquake can’t be detected by traditional seismic sensors, and has the potential to make quakes much more destructive than previously predicted. Until now, our understanding … Continue reading

Moon and Sun’s Gravity Causing Shifts in San Andreas Fault

The gravitational tug between the sun and moon is not just a dance of high and low tides: It can also trigger a special kind of earthquake on the San Andreas fault. This phenomenon has fascinated scientists for years. Like sea levels, the surface of the Earth also goes up and down with the tides, flexing the crust and stressing … Continue reading

Large-Scale Motion Near San Andreas Fault System Detected

The top diagram shows the lobes of movement, uplift in red and subsidence in blue, found using GPS data, while the botom diagram shows the lobes predicted by an earthquake simulation model. Image by University of Hawaii, Manoa “We were able to break down the noisy signals to isolate a simple vertical motion pattern that curiously straddled the San Andreas … Continue reading