September 21, 2020

Southern California trembles again with an earthquake of magnitude 4.9

A new tremor of magnitude 4.9 on the Richter scale returned to shake this Friday the southern state of California (USA) just one week after the earthquake of magnitude 7.1 that could be felt in the city of Los Angeles and other nearby locations.

The movement registered this morning is the most intense of the almost thousand tremors of lesser degree that have occurred this last week, as aftershocks of the earthquakes of magnitude 6.4 and 7.1 of last week, indicated the US Geological Survey.

Neither the tremor of this Friday nor the previous ones left victims, according to the Californian authorities, who recalled, however, that these earthquakes represent two of the most important earthquakes that California has suffered in recent decades.

The epicenter of all earthquakes has been in the vicinity of Ridgecrest, a city of about 29,000 inhabitants located 250 kilometers north of Los Angeles and which was already the point of origin of the so-called "July 4th earthquake", since that earthquake coincided with US Independence Day. celebrated last week.

Since then, the region has suffered an average of one tremor per minute, 70 of which have exceeded magnitudes of 4 on the Richter scale although the vast majority have been of minimal intensity, according to the geological services.

The experts had already anticipated after the "July 4 earthquake" that there were likely to be replicas of the same magnitude or even stronger tremors.

"Do you know when we say that there is a 20-in-20 chance of an earthquake following something more powerful? This is the time," affirmed on Twitter the seismologist Lucy Jones, who works for the California Institute of Technology (Caltech) and is a eminence in the study of tremors.

The most tragic earthquake in recent history and still remains in the memory of many Californians was the 1994 in Northridge, magnitude 6.7 in the metropolitan area of ​​Los Angeles, which left 57 dead, thousands of injuries and numerous property damage .

Authorities and experts in earthquakes have long been warning about the "Big One", which is how a hypothetical and possible great earthquake is known to originate in the San Andreas fault and that could have very serious consequences in California.

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