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Five small earthquakes strike Baja California

SAN DIEGO - Five small earthquakes struck Saturday and today in the same area of northern Baja California and were close enough to be felt in San Diego County.

The largest hit Saturday just after 4 p.m. and was estimated at magnitude 4.3. Its epicenter was about 30 miles southeast of Calexico and 100 miles east of Tijuana, according to the U.S. Geological Survey.

The first weekend quake was magnitude 3.2 at 1:40 p.m. Saturday, and it was followed by a magnitude 3.2 at 12:52 a.m. and a 3.4 shaker at 2:36 a.m. today, according to the USGS.

There was no known damage as a result of the quakes, the latest of hundreds of small quakes that have been rattling the Imperial Valley and East County since 2007.

The swarm is centered near Guadalupe Victoria, a small farming town 19 miles southeast of Mexicali. A small volcano there erupted about 10,000 years ago, and geologists say the quake swarm emanates from shallow magma fields

associated with tectonic forces that are steadily separating Baja California from the rest of North America.


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