2026-06-15T19:21:50.237Z30.7078132.422813.449manualconfirmedUSGS4.4mb1Origin/20260615194000.566303.101943Magnitude/20260615194000.566384.1019442026-06-15T19:39:31.762816Z2026-06-15T19:40:04.493047ZSoutheast of Shikoku, Japanregion nameOrigin/20260615194000.566303.101943