2026-04-30T13:57:29.5Z39.806999206543-122.86900329594.0700001716614manualconfirmedUSGS1.86md1Origin/20260430135920.112926.38535Magnitude/20260430135920.112987.38536USGS21 km NW of Alder Springs, CAregion namenccatalognc75354362contributorID