This is what I meant with my (partially) tounge-in-cheek observation; that predictability of severe weather in the summer is such that even as recently as the overnight hours, today was looking like a wash for severe potential north of I-80 in IL.
The flip side of this of course, is that it makes it near impossible to plan chases/take PTO in advance. For me, it's local enough that I can head out with my 3A-noon shift.