One day it will happen. As millions of people living in Southern California go about their daily lives, a cataclysmic earthquake will suddenly strike. The geography of the California coastline will be permanently changed, and the ground on the western side of the San Andreas fault will drop by several feet. Since much of Southern California is just barely above sea level, the Pacific Ocean will start rushing in. What I have just shared with you is not the plot to some really bad disaster movie. As I have documented repeatedly over the years, this is a scenario that scientists are telling us will happen someday. Millions of lives will be at risk when "the Big One" finally strikes. Could it be possible that "the Big One" will strike a lot sooner than most people think?

The shaking that we have witnessed over the past 72 hours has been extremely alarming.

On Saturday, the city of Brawley was rocked by more than 150 earthquakes…

A reported earthquake swarm rattled Imperial County on Saturday, with over 150 recorded quakes in the city of Brawley, south of the Salton Sea — including one 4.5 magnitude.

The United States Geological Survey has recorded at least 29 quakes over 2.5 magnitude, but well over 150 earthquakes total, including small ones, have been recorded on Saturday, according to the Caltech Seismological Laboratory.

Unfortunately, it didn't stop there.

The shaking continued throughout the night and into the next day.

On Sunday, Brawley continued to experience constant earthquakes. This included a magnitude 4.0 quake, a magnitude 4.4 quake, a magnitude 4.5 quake, and a magnitude 4.7 quake…

More than 150 earthquakes were recorded during the earlier phase of the swarm, totaling close to 400 by 08:00 UTC on May 11. The sequence was centered near Brawley and the southern Salton Sea region within the Brawley Seismic Zone.

The M4.7 earthquake was registered at 07:10 UTC on May 10, at a depth of 14 km (8.7 miles), according to the USGS, which received nearly 200 reports of people who felt it. Shaking was felt across parts of Imperial County and elsewhere in Southern California.

Additional notable earthquakes reported during the sequence included an M4.5 at 03:39 UTC on May 10, an M4.4 at 02:22 UTC on May 10, and an M4.0 at 03:13 UTC on May 10.