2026-06-13T15:34:45.06Z37.915500640869-122.086166381847.5900001525879manualconfirmedUSGS1.65md1Origin/20260613153641.975289.20178Magnitude/20260613153641.975349.20179USGS2 km WNW of Walnut Creek, CAregion namenccatalognc75375766contributorID