Magnitude 5.6 quake
By Darryl Gove on Oct 30, 2007
Just after 8pm we had a magnitude 5.6 quake near Alum Rock, about 10 miles east of here. Most of the quakes I've previously felt here have been more like the base of the building being hit with a large metal hammer; this one was much different. There's an earthquake simulator at The Tech where you stand on a small square platform which randomly judders from side to side. This quake was much more like that.
The USGS provides a couple of online resources for earthquake information. A map showing the location of recent earthquakes. A shake map, which shows how the amount of shaking detected around the epicentre. A shake map which is reported by people. There's also raw seismograph data; the link is for Stanford telescope data, other stations can be selected.