January 12th kicked off the swarm of major 2010 earthquakes starting with Haiti’s devastating 7.0 magnitude earthquake, then February 27th Chile was crippled by a whopping magnitude 8.8 quake with a less-publicized tsunami leveling their coastal region. On Easter Sunday April 4th 2010, in the afternoon Northern Baja California was hit with a major 7.2 quake which was felt in three states north into Los Angeles, California, in Arizona and Nevada.
All three quakes have been experiencing thousands of unsettling aftershocks, months later. Because the ground has been continuously swaying with movement, much like the ocean-bound Los Angeles-to-Ensenada cruise ship, since April’s Easter Sunday quake, we didn’t expect the magnitude 5.7/5.9 (conflicting USGS data below) shaking Monday morning June 14th, to be a completely separate “moderate” earthquake.
Refer to the United States Geological Survey (U.S.G.S.) shaking maps located online at: data.scec.org/recenteqs/Quakes/ci14745580.html and then to the “Caltech/USGS After-Shock Probability Report” tab at the bottom of that page. With the epicenter above the California/Mexico border in lower San Diego County, it was not declared an aftershock of the Easter Sunday Baja quake, which may have started a geological chain reaction, based upon daily monitoring of the U.S.G.S. shake-maps data.
The article “Easter Earthquake 2010 in Baja, MX Upgraded to 7.2” on my news page online at AssociatedContent.com/cmajors details much of our confusion while experiencing such a major quake as it weakened, while traversing over the mountains separating the epicenter from the Baja coast. Although the inland areas of Northern Baja sustained extensive damages, road fissures and structural destruction which stretched up, across and into the Southern California border, coastal areas only suffered minor frayed-nerves. Many of us however waited in horror, frantically searching the internet for tsunami warnings.
See the article “Tsunami Warnings: Where to Get Emergency Information for S. California & Other Coastal Regions” (also located on my news page above) written in hopes of preventing loss-of-lives, as happened following the 2010 Chile and the 2004 Indian Ocean quake-related tsunamis.
The moderate 5.7/5.9 quake Monday morning June 14th occurring on the California side of the Baja Mexico border first appeared to be an aftershock from April’s Easter quake. Could it however be a fore-shock of a stronger earthquake, as our coastal region thrusts north along the San Andres fault line?