2025-08-18T19:41:42.49Z37.1588333333333-121.5321666666679.19manualconfirmedUSGS0.51md1Origin/20250818222944.660958.288613Magnitude/20250818222944.661008.288614USGS11 km NE of San Martin, CAregion namenccatalognc75225512contributorID