Californians on heightened earthquake alert

quake

Residents in Southern California are under an earthquake advisory.

There’ve been more than 100 small quakes and temblors earlier this week, increasing the chances of a major quake near the San Andreas Fault.

Scientists say residents should be on heightened alert through Tuesday.

They estimate the possibility of a major 7.0 quake is as high as one in 100 and as low as one in 3,000.