California has experienced seven earthquakes in less than 24 hours, with the latest striking Friday morning.
The US Geological Survey (USGS) detected five quakes along the San Andreas fault that experts say is overdue for a magnitude 8.0 or higher, known as the ‘Big One.’
The initial event, a magnitude 2.7, hit Thursday off the coast of Northern California, followed by another magnitude 2.5 less than one hour later in the same region.
A 2.9 quake was detected near the cluster Friday, another 2.7 magnitude northwest of San Diego and the latest clocked in as a magnitude 2.6.
The other two earthquakes struck near Death Valley, along the Foothills fault system, with a magnitude 3.0 detected on Friday.
The other was a smaller 2.6 quake that hit Thursday.
An assessment from Michigan Tech University showed that people typically do not feel quakes with a magnitude of 2.5 or less.
Those from 2.5 to 5.4 are often felt but only cause minor damage.
No damages or injuries related California’s seismic events have been reported.
California has experienced seven earthquakes in less than 14 hours. A 2.7 magnitude hit northwest of San Diego on Friday at 1:45am
The cluster of earthquakes produced weak shaking, with only a handful of reports issued to the USGS.
While the earthquakes are not considered major, more than half of them hit along San Andreas, which spans 800 miles from Cape Mendocino in the north to the Salton Sea in the south.
The ‘Big One’ would cause roughly 1,800 deaths, 50,000 injuries and $200 billion in damages, according to the Great California Shakeout.
The last major earthquakes on the San Andreas fault were in 1857 and 1906.
The Fort Tejon earthquake of 1857 was a 7.9 magnitude, which caused ground fissures in the Los Angeles, Santa Ana and Santa Clara Rivers.
Trees were uprooted, buildings were destroyed and two people were killed during the event.
The catastrophic 1906 San Francisco event was also a magnitude 7.9 earthquake, which killed 3,000 people and leveled much of the city.
Experts are ‘fairly confident that there could be a pretty large earthquake at some point in the next 30 years,’ Angie Lux, project scientist for Earthquake Early Warning at the Berkeley Seismology Lab, previously told DailyMail.com.
Dr Sue Hough, a scientist in the USGS’ Earthquake Hazards Program, told KTLA5 that there are conflicting studies about what signs precede a major earthquake.
Some research suggested more activity happens before it hits, while others have found there is no warning, she added.
The latest seismic event was a magnitude 2.6 that hit along the northern coast at on Friday at 5:34am ET
California has had more than 6,200 earthquakes of magnitudes up to 4.7 this year alone, according to Volcano Discovery.
Approximately four quakes were above magnitude 4 and around 5,800 were below magnitude 2.
The vast majority of earthquakes result from the constant movement of tectonic plates, which are massive, solid slabs of rock that make up the planetary surface and shift around on top of Earth’s mantle — the inner layer between the crust and core.
As the tectonic plates slowly move against each other, their edges can get stuck due to friction and stress will build along the edges.
When that stress overcomes the friction, the plates slip, causing a release of energy that travels in waves through the Earth’s crust and generates the shaking we feel at the surface.
The Foothills fault system sits in the Sierra Nevada mountains, several tens of miles away from San Andreas.
The last notable earthquakes on the Foothills fault system were damaging events occurring in 1975 near Oroville and 1909 and 1888 near Nevada City.
These seismic events ranged between magnitude 5 to 6.
