Rolling

Posted at 8:14 pm on Wednesday, August 2, 2006, in Uncategorized.

My fiancee and I just experienced a 20-second-or-so rolling earthquake, one of the longest I have felt since moving to California in July 2002. I felt the quake coming, and then the house rolled (and it seemed like forever) and I hoped that it wasn’t going to be the big one. It continued to roll, and then it stopped. And then I blogged about it. So it goes…

As of right now, the quake is still not posted at USGS. I am predicting a 3.2.

UPDATE: The earthquake was reportedly a 4.5 located south of Santa Rosa, roughly 50 miles north.

UPDATE: The magnitude has been revised to a 4.7. This is all preliminary. I guess I should have known (being a geotechnical engineer and all) that roughly 20 seconds of rolling motion felt on the second floor of my house which is underlain by Young Bay Mud must have been larger than a 3.3. But you can never tell, I swear. If it were closer, with the same motion, then a 3.3 would have been likely. But the earthquake was 50 miles away, so 20 seconds of motion makes sense from a 4.7.

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