http://scedc.caltech.edu/recent/Quakes/quakes0.html
4.1
2017/02/20 16:57:52 38.796N 122.734W 0.9 3 km ( 2 mi) NE of The Geysers, CA
15 km from Hidden Valley Lake, CA · 6:57 PM
(near The Geysers)