Thanks for the information Canie: I am very interested (as a hobby like most of the rest of us). USGS site has depth 5 km +/- 2.8 km. Especially if above 5 km, I think a 5.6 could rupture to the surface (maybe someone can post the expected dimensions of the rupture of a M5.6). The cracks you link to do not show the strike-slip motion and it would be unsurprising if they were just shaking effects on soils etc. But, TV news or cnn.com or somewhere showed road damage that looked more like ground rupture, although hard to tell (was vertical component on road, could not tell if there was strike-slip, and could also have been shaking-related ground failure rather than directly the fault rupture). The link from yoru post above to OK geologic survey has nothing new since yesterday, but the quake map shows quakes the last month strung out WNW-ESE. The nodal planes are NW-SE and SW-NE.

Chris