BREAKING 1: It wasn’t just 1 earthquake; it was an earthquake swarm!
BREAKING 2: The magnitude is been upped to 7.2
BREAKING 3: Damage and injury reports are slowly coming in from around the county, as well as some information from Mexicali and other Mexican cities. Check updates from Left Coast Rebel for pictures and details.
Dear Friends: Happy Easter. It is a rule of thumb that having your city/region featured on the Drudge Report is usually not good. A 6.9 magnitude earthquake just shook the area, to the point my entire family went under the kitchen table while the earth shook steadily for one minute. I wanted to post this, as I often feature earthquake reports as part of “Science at the Shrine”. My husband and I have geology degrees as well, so this type of event gets the science geeks in us going.
My husband is worried about Mexicali, the capital of Baja California and near the apparent epicenter. The buildings are not structurally sound, and that region just bore the brunt of a significant seismic event. I will be posting updates through the day.
UPDAATE 2: Left Coast Rebel has further details — Breaking: San Diego Earthquake/Mexico Earthquake, 3:40 PST, April 4, 2010
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.
A good review of the geology of the region, with graphics underscoring the plate tectonics, can be found here: HOW BAJA CALIFORNIA AND THE SEA OF CORTES WERE FORMED.
Meanwhile, I wish everyone a very blessed Easter Sunday.