2026-03-13T22:44:21.56Z37.365501403809-122.28166961673.0599999427795manualconfirmedUSGS1.9md1Origin/20260313224618.882321.108906Magnitude/20260313224618.882404.108907USGS5 km WSW of Portola Valley, CAregion namenccatalognc75327057contributorID