Surface lows in southern N. Dakota and W. Nebby are shearing out. Dry line while still advancing slowly in E. South Dakota has stalled and even retreated a bit in NE Nebby. Probably in part to main trough in 4 corners taking on a bit more of a negative tilt.
Might mean nothing, or that things may be slowing a bit.....and everyone in Iowa may once again be in play.
Also as for the sun....it helps if you are one wanting severe weather. But this time of year with the spring wind fields as they can be, it's not necessary.