2026-03-18T16:05:25.69Z40.341835021973-124.2383346557625.319999694824manualconfirmedUSGS2.64md1Origin/20260318160734.089888.156889Magnitude/20260318160734.08997.156890USGS4 km ENE of Petrolia, CAregion namenccatalognc75329617contributorID