2025-12-20T04:06:31.58Z37.7490005493164-121.9386672973638.64000034332275manualconfirmedUSGS2.13md1Origin/20251220040902.672365.4551Magnitude/20251220040902.672415.4552USGS5 km SE of San Ramon, CAregion namenccatalognc75283066contributorID