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The odds of experiencing an earthquake, at least a tremor in San Fransisco on any given day are pretty good. The west coast of the US, especially California is one of the most geologically active areas of the country. Positioned in such close proximity to so many major and minor faults, earthquakes in most California cities are pretty common.

According to the USGS, the probability of the San Francisco area experiencing at least one magnitude 6.7 or greater earthquake in the next 30 years is about 63%, distributed among these faults as follows:

  1. Hayward fault about 31%
  2. San Andreas fault about 21%
  3. San Gregorio fault about 10%
  4. Calveras fault about 7%
  5. Concord fault about 4%
  6. etc.

See: http://www.earthquakesafety.com/earthquake-faults.html

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9y ago
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14y ago

The plates underneath the continent of North America might have drifted causing a fault which is called earthquake

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Q: What do scientists think is the risk of an earthquake near San Francisco?
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