Two major fault lines on the West Coast are in ‘sync’ and signal possible massive quake on horizon, scientists warn

The West Coast is years overdue for the next big earthquake.

When the colossal tremor eventually strikes, seismologists expect high-rises and other buildings to collapse, massive fires that can burn hundreds of homes, Los Angeles highways to buckle and potentially a tsunami that could block any rescuers from reaching the tens of thousands of people who are threatened.