Two Earthquakes Shook Up Northern California. Is The Big One Close?

Two earthquakes 8 seconds apart were enough to shake up people across Northern California on Monday morning. Although the shocks were not high on the Richter scale, which is the ground shake beneath their feet is not the best way to start the week. However, the two earthquakes that have shaken up the northern California on Monday morning, everyone got to ask if the Big One is near.

Residents of El Cerrito had the worst week really begins as they were awakened by two earthquakes on Monday morning. Although 2.9 and 4.0 magnitude tremors have not caused any damage reported, people in San Francisco Bay Area certainly did not feel too well with the ground is shaking under my feet.

The first earthquake hit San Francisco Bay Area in just 5:33 and eight seconds later a second shake in the same place. 2.2 magnitude aftershock came thirty minutes later. Earthquakes went to a depth of 5 km and a half.

According to seismologists with the U.S. Geological Survey earthquake developed in the Hayward fault. These two words are terrified everyone in San Francisco Bay and every seismic activity reminds people residing in the region of the country under their feet is not completely stable.

Hayward Fault is anything but calm. The error range of about 9 mm per year, and if they seem insignificant to the layman, seismologists and geologists have much grimmer view.

In addition, each earthquake makes people wonder if the next of what scientists call the Big One. In 2003, the report of the U.S. Geological Survey estimates that in the next 30 years, the Bay Area to be hit by the infamous Big One. According to their statistics, there were 67 percent chance Hayward fault would release about the power of 6.7 or greater earthquake that hit Northern California.

Brad Aagaard is a research geophysicist with the U.S. Geological Survey. He said that the last tremor Hayward fault moved 10 cm, whereas the depth of the 5.5 million "With a small event like this to change the tension in the region" he added, because there is no accurate way to predict when the Big One hit, "it could happen tomorrow or it could be happening right now."