A series of small earthquakes have struck along the U.S. west coast, sparking fears a bigger tremor might be on the way.<br /> A three-point-three magnitude quake was recorded in Alamo, some 48 kilometers from San Francisco, on Monday. <br />It followed three small tremors that were recorded in Danville the day before and the U.S. Geological Survey continued to record smaller tremors.<br />There have been no reports of injuries or damages yet, though rail services were slowed as a precaution. <br /> Residents in California are worried the swarm of small tremors may signal that a bigger quake is coming, but the USGS says that is unlikely to happen. <br />
