3.0 MAG EARTHQUAKE *UPDATE – Epicenter location of 32.882°N, 96.980°W off Westridge Drive and Walnut Hill Ln. in Irving/Las Colinas area.

— DFW Scanner (@DFWscanner) January 23, 2013

Here’s a quick synopsis from the U.S. Geological Survey, if you’re into that sort of wonky nerdy stuff.