Four of California’s San Andreas fault lines are reportedly moving slowly and could cause major earthquakes in the Bay Area according to observations by expert scientists. The slow, creeping movement of the fault lines only amounts to a few millimeters over a span of years, but the last time major earthquakes occurred along the fault lines was hundreds of years ago.

Four of California’s San Andreas fault lines are reportedly moving slowly and could cause major earthquakes in the Bay Area according to observations by expert scientists.

The slow, creeping movement of the fault lines only amounts to a few millimeters over a span of years, but the last time major earthquakes occurred along the fault lines was hundreds of years ago.

Also the creeping movement that doesn’t disturb the surface has slowed down recently, meaning that there might be a violent break in the near future.

According to a study by researchers at the United States Geological Survey, earthquakes between magnitude six point eight and seven point one might eventually be caused by the creeping fault lines.

The Calaveras, Rodger‘s Creek, Green Valley, and Hayward fault lines are all at risk of unlocking and causing a major earthquake.

Results of the study show that there is a 70 percent chance that one of the fault lines will break within the next 30 years.

The Hayward fault line is the most unstable, and also happens to be in the area where it would do the most damage to infrastructure and the human population, including the East Bay, San Francisco, and the Sacramento Delta.