A pair of small earthquakes shook San Bernardino on Monday morning, according to the U.S. Geological Survey.
A magnitude 3.5 earthquake was reported less than a mile from San Bernardino at 9:44 a.m. followed by a magnitude 3.0 earthquake four minutes later, the USGS reported.
The temblors occurred just a few miles from Highland, Muscoy, Lake Arrowhead and Rialto.
The initial quake occurred at a depth of 4.7 miles near Harrison Canyon Road and the second at a depth of 4.5 miles near David Way North in San Bernardino. A spokesperson for USGS could not immediately be reached for comment.
Dorothy Chen-Maynard, a nutritional science expert who also teaches at Cal State San Bernardino, was in the middle of a lecture about metabolism with future dietitians when the earthquakes happened.
“Initially it felt like a jolt, then a bit of a rumble,” she said. “The first [quake] was a little stronger than the second one.”
Chen-Maynard was surprised to learn that the epicenter of the second quake was just a street over from her house.
“I hope my home is OK,” she said. “I’ll find out later in the day.”
She said after the quakes, the lecture on metabolism switched to a discussion about earthquake preparedness and safety.
In the last 10 days, there have been no earthquakes of magnitude 3.0 or greater centered nearby.
An average of 234 earthquakes with magnitudes between 3.0 and 4.0 occur per year in California and Nevada, according to a recent three-year data sample.
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This story was produced with the assistance of Quakebot, a computer application that monitors the latest earthquakes detected by the USGS. A Times editor reviewed the post before it was published. If you’re interested in learning more about the system, visit our list of frequently asked questions.
This story originally appeared on LA Times
