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A moderate earthquake with a preliminary magnitude of 5.6 struck Northern California Tuesday night, according to the U.S. Geological Survey.
The quake's epicenter was about five miles north-northeast of Alum Rock, California, and nine miles northeast of San Jose's City Hall, the USGS said. It hit at 8:04 p.m. (11:04 p.m. ET).
Originally posted by Grailkeeper
Is it typical for smaller quakes to preceed 'the big' one in most cases, or is it a random occurance?.
Hopefully when the big one hits, it won't be all that 'big'.