California suffered the strongest earthquake of two decades in the national day

The southern part of California is shaken by an earthquake of 6.4 degrees and experts warn there will be stronger earthquakes over the next few days.

The US Geological Survey (USGS) said the earthquake occurred at 10: 33 on July 4 (Hanoi, July 5, 2010) in the vast desert of Searles Valley in San Bernardino, southern California. , America. The epicenter was 8.7km deep and the earthquake lasted for many seconds.

The earthquake 6.4 degrees shook in southern California on July 4.

People in Los Angeles City are 258km from the epicenter and feel the vibrations in Las Vegas in neighboring Nevada. Dozens of aftershocks have been recorded and may continue to happen, some may be as strong as 5 degrees.

Kern County Fire Department said it was deployed to address "nearly 20 incidents, from medical assistance to fires" and evacuation was carried out at Ridgecrest Regional Hospital. The San Bernardino County Fire Department says buildings that suffer from varying degrees of damage, including buildings with small cracks, broken water pipes, broken power lines and broken road surfaces that do not have injuries or fire.

The epicenter of the earthquake lies on or at the edge of the US Navy's desert bomb test site, called China Lake. This facility is 445,000 ha and the navy strictly controls airspace above it. The Navy develops and tests missiles, bombs, artillery shells and other war materials here.

Goods were dumped in a supermarket in California after the July 4 earthquake.(Photo: USA Today).

An official at China Lake said there was "significant damage" to their facilities, including fire, water leaks and spills of hazardous materials. Meanwhile, Los Angeles International Airport said the runway was not affected and the operation continued as usual.

The earthquake happened on the US national day. President Donald Trump posted Twitter that all "seem to have been well controlled". However, Jones researcher warns that this light earthquake is just a "foreplay" for greater vibration in the next few days.

California is the most populous state in the United States, but the earthquake occurs in a sparsely populated area. This is also the largest earthquake in Southern California since 1999 when the 7.1-magnitude Hector Mine earthquake occurred at the Twentynine Marine base.

The location of the earthquake (red circle) in California is July 4 morning.(Photo: NBC).