The desert near the Salton Sea continue to tremble as a swarm of small earthquakes that started Wednesday continued into Thursday. The swarm slowed down Thursday, but at least four earthquakes of magnitude 3 or larger were recorded in the first seven hours of the day, according to the U.S. Geological Survey. The swarm is taking place … Continue reading USGS says there is a 1-in-300 chance that the current Salton Sea earthquake swarm will be followed by a magnitude 7 or higher