Add Yahoo as a preferred source to see more of our stories on Google. A California Geological Survey map released earlier this year depicts just how intense and damaging the shaking from future ...

But in Southern California’s Imperial Valley, the earth has been shaking. In less than a day, more than 40 earthquakes shook the area around Holtville, the largest of which had a magnitude of 4.4.

A California Geological Survey map released earlier this year depicts just how intense and damaging the shaking from future earthquakes will be across the state, revealing where the threat is most ...