A minor, 3.9-magnitude earthquake struck in the San Francisco Bay Area ... severity map. An aftershock is usually a smaller earthquake that follows a larger one in the same general area.

Look at the map here or below. Phase 2 involved maps revolving in and around the San Francisco Bay Area. "I see it as a call to action," said Brian O'Shea, an Orinda resident. "We have to pay a ...

Officials at Cal Fire announced the second phase of new "fire hazard" maps on Monday. These maps show which areas of the last 15 years have changed from either no fire threat to severe fire threat.