Officials in Southern California say emergency crews are responding to at least 24 medical and fire incidents after the quake.
The quake measured with a preliminary magnitude of 6.4 struck Thursday morning near the town of Ridgecrest, California, about 150 miles (240 kilometers) northeast of Los Angeles.
Following the quake, the City of Los Angeles announced they would be lowering the alert threshold with the USGS Shake Alert.
The USGS said the quake, initially reported as a magnitude 6.6, was very shallow - only 6.7 miles (10.7 km) - which would have amplified its effect.
Officials in Southern California said emergency crews were responding to at least 24 medical and fire incidents in the aftermath of the natural disaster.
Ridgecrest Mayor Peggy Breedon said the city was dealing with fires and broken gas lines, as well as falling objects that hit people, as the city endured many aftershocks.
Ridgecrest Regional Hospital and several apartment buildings have been evacuated. After they evacuated, a wall fell behind where the children had been performing, she said.
"We are used to earthquakes but we're not used to this significance", she told MSNBC.
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"However, we feel are going to have the upper hand on this", Kern County Fire Chief David Witt said at a briefing. "We're a close-knit community and everybody is working to take care of each other", she told Reuters by telephone.
Emergency authorities urged people not to call 911 unless people were injured.
She says it's also important to make sure all buildings are up to code, so that they will keep residents safe during any future bad quakes. Please DO NOT call 9-1-1 unless there are injuries or other unsafe conditions.
Ben Hood, a firefighter who is working to extinguish a fire after the natural disaster in Ridgecrest, California, snaps a photo of the mayhem.
"Currently we are getting ready in case there's another one".
Los Angeles International Airport said its runways were unharmed, with operations continuing as normal. It was like 15, 20 seconds, maybe.
Other people shared photos of the damage on Twitter.
Local authorities emphasized that the end of the quake did not mean residents were yet in the clear, however President Donald Trump wrote on Twitter that "All seems to be very much under control!"