The mega tsunami could wash away major cities like Seattle and Portand in minutes, while great swathes of US costal land would be at risk of flooding or sinking 6.5 feet under water ...

Scientists are warning that a powerful earthquake in the Cascadia Subduction Zone could trigger a massive tsunami, ...

An earthquake swarm in Northern California early Thursday was another round of recurring temblors in a seismically active ...

More than 100 small earthquakes have been recorded near the Geysers geothermal field in Northern California since just after midnight Thursday, according to the U.S. Geological Survey.