How, you may ask? Just a little shake…
A light earthquake occurred at 10:09:35 AM (PST) on Thursday, January 7, 2010.
The magnitude 4.2 event occurred 10 km (6 miles) ENE of Milpitas, CA.
The hypocentral depth is 9 km ( 6 miles).
I work in Milpitas. Mother Earth wanted to wish us all with a little shake of hand. Just 4.2, but you could feel it with all the cubicles shaking. Happy New Year from California.