“You can see a bit at the surface, but you have to figure out what is the configuration underneath,” what the configuration of the faults of Northern California is like, is what causes the most ...

One of the most disturbing earthquake lessons was an earthquake puzzle in Northern California, the 1992 magnitude-7.2 earthquakes in the Cape Mendocino earthquakes, was a depth event at first much ...

A Dense Fog Advisory is in effect for the valley, with widespread visibilities under a quarter mile, until noon today.

Newly released data from the U.S. census helped the Chronicle create detailed maps showing how San Francisco neighborhoods ...