I'm no fan of today's severe weather setup in South Dakota. The main thing this morning that throws up red flags is the cirrus cloud shield over much of the state. This isn't something that burns off during afternoon heating, but is rather persistent. This shield will act to limit instability this afternoon and could keep storms from firing until after dark or not at all. Dew points at the surface are a bit marginal this morning and it's not a sure thing that they'll recover this afternoon because of computer model issues lately. We won't get a true east wind for good low-level wind shear either, so that's another thing to throw in the bin of issues.
Nevertheless, we're going to drive up to south-central South Dakota (short drive) and wait there to see how things develop. Maybe Mother Nature will surprise us. The Storm Prediction Center has a Slight Risk area out for much of South Dakota, but that may be in jeopardy right now based on current conditions.