According to the U.S. Geological Survey, the dozens of tremors began in the early morning on Monday, ranging in size from a 2.6 magnitude quake to a 4.6 magnitude quake northwest of Palm Springs and the Salton Sea.
The swarm marks only the fourth time in almost 90 years of modern seismology records that such an incident has occurred in that part of the Golden State.
According to The Los Angeles Times, there is generally a 20% chance of a magnitude 7 or higher earthquake on the fault over the next 30 years.
“During this earthquake swarm, the probability of larger earthquakes in this region is significantly greater than usual. The southernmost section of the San Andreas Fault is capable of rupturing in large-magnitude earthquakes (magnitude 7+), but the last earthquake that strong was more than 300 years ago,” the Geological Survey said in a Monday statement.
“In a typical week, there is approximately a 1-in-10,000 chance of a magnitude 7+ earthquake on the southernmost San Andreas Fault. That probability is significantly elevated while swarm activity remains high,” they wrote.
A calculated 1-in-100 chance of a high-magnitude quake in the next week is a worrying rise from the normal 1-in-10,000 odds.
This time, the smaller quakes are notably farther away from the San Andreas fault than the 2016 swarm.
And in the worst-case scenario, it has the ability to unleash a devastating 8.2 magnitude quake that would rip through the state.
While large earthquakes can easily happen with no detectable warning at all, California…
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