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Incredibly, two earthquakes struck in one second and were about 60 miles apart over the weekend, according to the US Geological Survey.
The first quake, with a magnitude of 3.4, struck about 5 miles west-southwest of Tecate, in Baja California, 38 seconds after 5:13 p.m. Sunday. This is about 85 miles from downtown San Diego, and just a few miles from the US-Mexico border. The epicenter was in an unpopulated area, but about 14 miles away.
Tecate earthquake. Map courtesy of USGS
Then, right after that, an earthquake shook the Mexican desert about 18 miles southwest of Ocotillo, California. This earthquake had a magnitude of 3.6 on the Richter scale and was so shallow – just over half a mile away – that it could be felt by residents of the Mexican city of Mexicali, to the east.
The last earthquake felt in San Diego County before the aftershocks was Sunday on March 31, 2023, when a magnitude 4.5 event shook the area around Palomar Mountain during the afternoon.
Octillo earthquake. Map courtesy of USGS
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