UPDATE: 6.4 Earthquake Biggest to Hit SoCal in 20 Years, Causing Scattered Damage Across Region

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Los Angeles — An earthquake rattled a large swath of Southern California and parts of Nevada on Thursday morning, making hanging lamps sway and photo frames on wall shake. There were no immediate reports of damage or injuries.

This is the most powerful earthquake to hit SoCal in 20 years. 

apparent left lateral offset along CA178 between Trona and Ridgecrest #earthquake #ridgecrest pic.twitter.com/tjZagKMJ9V

— Ian Pierce (@neotectonic) July 4, 2019

There were at least 2 faults involved, and CalTech says people should expect more earthquakes. 

"The probability is very high.," Lucy Jones, seismologist says. 

https://t.co/AyrRNPUgBS

— Kern County Fire (@kerncountyfire) July 4, 2019

Kern County Fire Department reported gas lines in Ridgecrest were shut down. The department says they are concerned with the Dam of Lake Isabella. All July 4 events are canceled in Ridgecrest as of 2:00 pm. Kern County officials confirmed multiple injuries and at least 2 house fires reported in Ridgecrest. 

"No injuries, or catastrophic damage, all the firefighters were out surveying the city. The department of water and power no significant damage. A little bit of minor cracking on the freeway. This is a great time to plan where to go and what to do with your family. Stay alert. Good time to sit with family and plan emergency protocols," Mayor of Los Angeles Eric Garcetti told KNX. 
 

.@LAFD has completed their surveys of @LACity and reported no significant #earthquake damage from today’s quake near Ridgecrest.City agencies are working together and staying on alert. Be prepared, sign up for emergency alerts. https://t.co/SipLt5U1Rj

— Mayor Eric Garcetti (@MayorOfLA) July 4, 2019

The mayor told KNX that the city is prepared for earthquakes and other major catastrophes should they hit the city. 

 "We've learned so much in the 25 years since Northridge," Garcetti said. "We have great coordination across agencies. And great first-responders around the region," he added. 

Garcetti was at Universal City with his family at the time of the quake. "A lot of visitors were excited by their first earthquake... But every time we have an earthquake, I say this is the time to be prepared... Be sure you know what to do when the next one hits." 

The reason the earthquake felt so long was because it was actually several dozen earthquakes. 

I live in Ridgecrest. It was a rippling ride for about 30 seconds. Felt like my house was riding in waves back and forth. Walls along this road near me collapsed. #earthquake #CNN #RidgecrestEarthquake pic.twitter.com/tCl8a2keBm

— Paul Kakert (@DocumentaryTV) July 4, 2019

Residents at a local Ridgecrest mobile home community say some people do not have a place to live tonight. People are pooling their resources to make sure those with damaged homes have plenty of provisions and a place to stay.

More damage at a mobile home park in #Ridgecrest. Residents say some people in this community do not have a place to live tonight. People are pooling their resources to make sure those with damaged homes have plenty of provisions and a place to stay. @KNX1070 pic.twitter.com/ha9QvviyHz

— Cooper Rummell (@KNXCooper) July 5, 2019

I’ve been checking out some of the damage in #Ridgecrest. This is at a mobile home park on Ward Ave. near the 395. @KNX1070 pic.twitter.com/ZDjinlPPHL

— Cooper Rummell (@KNXCooper) July 5, 2019

Here's a list of safety tips to remember during earthquakes. 

#abc7eyewitness Earthquake damage at Eastridge Market in Ridgecrest pic.twitter.com/uBA2UNtOLF

— _zeneve_ (@Neve_ZJ) July 4, 2019

There was a report of a house fire in Ridgecrest and structural damage at Ridgecrest Regional Hospital that has caused patient evacuations. And the Mayor of Ridgecrest, 

#ABC7Eyewitness Ridgecrest Walmart and Stater Brothers pic.twitter.com/LoznvQntD6

— _zeneve_ (@Neve_ZJ) July 4, 2019

Officials have reported broken water mains, rock slides, and power lines down. 

M 6{*}4 - 12km SW of Searles Valley, CAhttps://t.co/3e222a3nq8 pic.twitter.com/jaTt3GWLYw— Nick Graehl (@nickgraehl) July 4, 2019

#EARTHQUAKE pic.twitter.com/QPBwIJpvGD

— 415FirePhoto (@415FirePhoto) July 4, 2019

House fire in Ridgecrest, CA #earthquake pic.twitter.com/gPh9loZSzU

— Rex Emerson (@Rex_Emerson) July 4, 2019

Many Angelenos were asking why the ShakeAlertLA app didn't alert people. But, the app didn't fail. ShakeAlertLA is programmed to only issue a warning if stronger, or "light" intensity 4 or greater shaking, hits L.A. County. The USGS says they will lower the leve of the alert. 

My dads liquor store in Ridgecrest (11 miles from the earthquake) -- pic.twitter.com/4RC0mY3eha

— Zomo (@zomo_abd) July 4, 2019

Approx 100 customers affected in San Pedro and 100 in #DTLA garment district. Water main is an 8 inch pipe and crews are working.

— LADWP (@LADWP) July 4, 2019

The epicenter of the 6.2 #Earthquake was in Searles Valley in the Mojave Desert with a depth of about 5.4 miles per USGS. It’s about 192 miles from Long Beach. The quake hit at 10:33 a.m. & lasted about 30 seconds. #yourLBFD wants you to #BePrepared https://t.co/pFohWKadOT

— Long Beach Fire (CA) (@LBFD) July 4, 2019

#EarthquakeResponse @kerncountyfire resources working nearly 2 dozens incidents ranging from medical assistance to structure fires in and around the city of Ridgecrest, CA. @kerncountyfire Urban Search and Rescue teams en route. #kerncountyfirefighters

— Kern County Fire (@kerncountyfire) July 4, 2019

The 6.4 magnitude quake measured struck near in the Mojave Desert, about 150 miles (240 kilometers) northeast of Los Angeles, near the town of Ridgecrest, California.

The United State Geological Survey initially said it measured at a 6.6 magnitude.

TRONA: #SBCoFD conducting assessment of region after #EARTHQUAKE. No injuries reported, however buildings and roads have sustained varying degrees of damage. ^eas

— SB County Fire (@SBCOUNTYFIRE) July 4, 2019

People from Las Vegas to the Pacific Coast reported feeling a rolling motion and took to social media to report it.

Local emergency agencies also took to social media to ask people to only call 911 for emergencies.

There have been NO reports of damage or injuries in the Las Vegas area due to the earthquake in Southern California into the Fire & Emergency 9-1-1 Communications Center at @LasVegasFD this morning. PLEASE DO NOT CALL 9-1-1 TO ASK IF THERE WAS AN EARTHQUAKE. EMERGENCIES ONLY! pic.twitter.com/2LgN7z4N3B

— Las Vegas FireRescue (@LasVegasFD) July 4, 2019

"We are very much aware of the significant earthquake that just occurred in Southern California. Please DO NOT call 9-1-1 unless there are injuries or other dangerous conditions. Don't call for questions please," the LAPD said in a statement published on Twitter.

No damage reported at Van Nuys Airport either. Operations continue at both LAX and VNY https://t.co/iKji0y8pKQ

— LAX Airport (@flyLAXairport) July 4, 2019

Ashleigh Chandler, a helicopter rescue EMT at Fort Irwin, California, said the quake happened as she was getting ready for a July 4th party.

"I was just in the living room getting everything ready, we start to feel the shaking, so then I look up and then the wine bottles start rattling and I thought, 'They're going to fall.'

"My sister was in the house and my dog, so we just got everyone outside and then it ended. It was like 15, 20 seconds, maybe. It was pretty good shaking, so I'm out of breath."

"Everyone's OK."

Live #EARTHQUAKE coverage on-air on @KNX1070 and streaming on the https://t.co/EQsfN6NKuB app @Radiodotcom. #LosAngeles pic.twitter.com/9PANA91EAo

— Craig Fiegener (@CraigNews3LV) July 4, 2019

Associated Press contributed to this story.