A preliminary magnitude 4.4 earthquake shook the Inland Empire Thursday morning.
According to the US Geological Survey, the epicenter, which was hit at 9:32am, was about four miles deep and three miles deep northwest of Rialto.
Temblor followed a small earthquake early in the morning. 3.0 was registered at 8:34am and about 10 minutes later a 2.8 magnitude tremor hit.
USGS also reported at 9:36am that a 3.1 earthquake shaking the area around five minutes after the major earthquake
There were no immediate reports of damage or injuries.
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Thousands of earthquakes are recorded in California every year, but the majority are very minor. According to USGS, hundreds reach 3.0 sizes and 4.0 sizes, about 15-20 sizes and over 4.0.
In North America, Alaska only records more earthquakes per year than in California.
What to do in an earthquake?
It is important to know the right steps to protect yourself and minimize injuries during an earthquake. The California Department of Public Health (CDPH) provides detailed guidelines on what to do during such events. Here’s the key points:
Drop: It falls to your hands and knees immediately. This position prevents you from being knocked over and allows you to stay low and safely crave if necessary.
Cover: Use one arm to protect your head and neck, and if possible, take shelter under a sturdy table or desk. If shelter is not available, please go down through the window next to the interior wall. You can kneel and bend over to protect your important organs.
Wait: Hold the shelter until the shaking stops. If the shelter shifts, be prepared to move with the shelter.
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