CZ and SWC arriving late in Chicago 8.6.2015

[Notelvis]

So I'm sitting comfortably in my 3rd floor room at a hotel adjacent to the Metra Station in Aurora, IL and a Chicago-bound superliner-equipped train just breezed by my window. A quick look at Amtrak Status Maps tells me that this was #4 running more than 7 hours late.

Also learned that a nearly 9 hour late #6 is another hour or so out.

Anyone know what has disrupted these two trains which originated in California 8.4.2015 so badly?

 

[Agent]

I think I know at least part of the reason #6(04) was delayed. I don't know anything about why #4 was late though.