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Friday, May 10, 2013

Earthquake Fact

English: This map, created by the Regional Pla...
English: This map, created by the Regional Plan Association, illustrates the Southern California megaregion (Photo credit: Wikipedia)
Two minor earthquakes felt in last couple of days.
Each year the southern California area has about 10,000 earthquakes. Most of them are so small that they are not felt. Only several hundred are greater than magnitude 3.0, and only about 15-20 are greater than magnitude 4.0. If there is a large earthquake, however, the aftershock sequence will produce many more earthquakes of all magnitudes for many months.
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