Geologists say Sacramento’s location creates a safety nest from the California earthquakes. The California Office of Emergency Services says people in Sacramento are less likely to feel the quakes because the city is located in a valley. There also aren’t many active faults in the area. Engineering geologist Cynthia Pridmore adds the strength of a quake depends on the density of the ground it hits. When quakes hit hard rock, their energy spreads out and can be more easily felt. The Cal OES continues to help Californians prepare for future earthquakes and is working on an app that will alert the entire state of an earthquake before it happens. A 4.3 shaker hit Contra Costa County yesterday afternoon.