2.5 Magnitude Earthquake in Mariposa County on Sunday, February 15, 2015 Details Last Updated: Monday, 16 February 2015 06:38 Published: Monday, 16 February 2015 06:35 View Comments February 16, 2015 - At 7:58 P.M. on Sunday, February 15, 2015 a 2.5 magnitude earthquake occurred in the southern part of Mariposa County. View the discussion thread. back to top