2026-03-29T08:05:17.41Z37.866165161133-121.8111648559614.640000343323manualconfirmedUSGS2.07md1Origin/20260329080744.613712.50595Magnitude/20260329080744.613776.50596USGS10 km ENE of Blackhawk, CAregion namenccatalognc75334787contributorID