2025-12-20T04:15:41.49Z37.7568321228027-121.9358367919926.92999982833862manualconfirmedUSGS2.27md1Origin/20251220041805.921187.4659Magnitude/20251220041805.921238.4660USGS5 km SE of San Ramon, CAregion namenccatalognc75283096contributorID