2026-06-15T01:49:05.78Z37.333999633789-122.213668823248.7399997711182manualconfirmedUSGS0.81md1Origin/20260615015145.781119.31062Magnitude/20260615015145.781179.31063USGS6 km SSE of Portola Valley, CAregion namenccatalognc75376736contributorID