2026-07-18T23:50:26.27Z37.111331939697-121.4745025634822.639999389648manualconfirmedUSGS2.5md1Origin/20260718235229.673615.150325Magnitude/20260718235229.673678.150326USGS12 km ENE of San Martin, CAregion namenccatalognc75398646contributorID