Los Angeles Earthquake That Rocked San Fernando Valley Thankfully Not 'The Big One'

A magnitude 4.2 earthquake shook California's San Fernando Valley in the early hours of Thursday morning, prompting residents to fear the much feared "Big One" may have arrived.

The quake was reported just before 4:30 a.m. local time, with its epicenter located in the Pacoima neighborhood in the San Fernando Valley region of the city at a depth of 5.5 miles (8.9 KM), the U.S. Geological Survey said.

The Los Angeles Fire Department ran its earthquake emergency mode and patrolled the area. The department confirmed there are no reports of any serious damage of injuries as a result of the quake.

"The LAFD has concluded the systematic survey of the City of Los Angeles by ground and air, and is pleased to report that no major infrastructure damage was noted by our personnel in the City of Los Angeles, and that there has been no loss of life or serious injury that we can directly attribute to the M4.2 earthquake," LAFD said.

"With our survey complete, the LAFD has concluded Earthquake Emergency Mode and has resumed normal operations. We ask you to use today's quake as a reminder to be prepared."

In the wake of the tremors, social media users described their relief that the quake wasn't "The Big One"—a huge quake measuring at least 7.8 that is expected to hit along Southern California's San Andreas Fault.

The last time a quake of that size occurred was when the magnitude 7.9 Temblor hit San Francisco in 1906, destroying the city and killing more than 3000 people.

According to the USGS, there is a 20 percent chance that an earthquake measuring at least magnitude 7.5 will hit San Francisco Bay again in the next 30 years.

"The first half second of when the earthquake woke me up and I hear my paper thin walls creaking and windows rattling after the big jolt. I always wonder if it's 'The Big One' in that first second," tweeted investigative correspondent Bill Melugin.

Singer Diamond White wrote: "Bro I have a real ass fear of the "big one" and as soon as I felt it I jumped up and got clothes on and literally couldn't tell if the earthquake was still happening or if it was just my heart."

Former ESPN NBA reporter Chris Palmer tweeted: "Earthquake was only for a couple seconds but it hit hard. Never get used to that. I spent 2 hours the other day researching The Big One. That's all we need."

All of us laughing about the #earthquake in LA and then remembering that the big one is coming soon. pic.twitter.com/rAziptyiRg

— sam thor 🎄 (@sthor97) July 30, 2020

Sees the big one trending pic.twitter.com/EBmTZypHiG

— East L.A. News (@EASTLA_NEWS) July 30, 2020

When he promises you The Big One but it's ONLY a 4.5"-er pic.twitter.com/YnplJwkKur

— lorazepamela anderson (@kahtrinuh) July 30, 2020

The Big One seeing LA Twitter freakout over a 4.5 magnitude #earthquake pic.twitter.com/XxVs2TbbNF

— Tashdeed Faruk (@__TKF__) July 30, 2020

y’all if that wasn’t the big one i don’t want to feel the big one pic.twitter.com/sUwKLeadsZ

— ⁷ ✿ (@clueleess) July 30, 2020

CBS reported Thursday's quake was the largest felt in the region since two hit Kern County in consecutive days last year.

The region was hit by a 6.4 quake on July 4, 2019—the largest felt in Southern California in 20 years.

This was followed by an even bigger 7.1 magnitude earthquake which hit on July 5.

(File photo) A church stands behind newly cracked roadway after a 7.1 magnitude earthquake struck in the area on July 6, 2019 in Trona, California. A 4.2-magnitude earthquake struck the Pacoima area of the San Fernando Valley early Thursday morning Mario Tama/Getty