January 20, 20154.4 Magnitude Quake Shakes Greenfield- 1/20/15 6:00 S.S. Local News by Susan Simon A 4.4 magnitude earthquake occurred 17 miles east-northeast of Greenfield at 5:21 this morning. It took place at a hypocentral depth of 6.1 miles, and was felt all around the greater Monterey Bay area and the Central Coast.