CALIFORNIA has been rocked by two earthquakes that struck within minutes on Thursday morning.

The shaking began with a preliminary 4.4 magnitude earthquake and was quickly followed by a significant aftershock.

The earthquake hit San Bernardino County on Thursday morningCredit: USGSThe shocks were felt from Los Angeles to San DiegoCredit: USGS

The first quake was centered in San Bernardo County and hit at 9:32 am local time, according to the US Geological Survey.

Shaking was reported across the Inland Empire and was felt as far away as Los Angeles and San Diego.

The earthquake occurred 3.3 miles deep, USGS said.

No injuries or damage were immediately reported.

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An hour before the massive quake, the Rialto area was shook by two smaller temblors measuring at magnitude 3.0 and 2.8 about eight minutes apart.

About 13 minutes before the magnitude 4.3 hit, two smaller quakes also hit, according to USGS.

Residents reported feeling a jolt or sudden movement in areas as far as Redondo Beach, California.

The earthquake likely occurred near the San Andreas Fault.

The area is known for its seismic activity.

In the past 10 days, there have been three earthquakes of over 3.0 magnitude centered nearby.

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The Rialto Fire Department warned residents to be ready for more earthquakes, as they're common in the area.

"Stay Prepared!" RFD wrote on X.

"Recent earthquake activity is a reminder: quakes can strike anytime."

Officials told citizens to secure their heavy items and furniture.

During shaking, it's best to remember to drop, cover, and hold on.

After earthquakes, fire officials warned that people should check for gas leaks and other damage.

Thursday's tremor also comes three days after a massive earthquake struck off Russia's eastern coast.

The impact triggered tsunami warnings in Hawaii, Japan, and areas of the US West Coast.

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At magnitude 8.8, it was recorded as the sixth most powerful quake ever.

Millions of Hawaii residents were forced to evacuate from coastal areas while the island braced for impact before it was downgraded to an advisory.