Recently, I've been calling the ORD ATIS line on a daily basis, just because I'm interested in seeing what runway configurations are in use.
Usually, it's one of two configurations:
In 10, 9R, and 4R/Out 4L, 9R, 32R, 32L-T10 (North/East Winds)
In 22R, 27L, and 28/Out 22L, 32R, 32L-T10. (South/West Winds)
However, today they were using different configurations:
First, I heard they were landing 14R and 10 and 22R (I think), then landing only 10 and 9R. Why these configurations?
Yes, I'm familiar with bigairport.com ... they don't mention that next-to-last combination at all. What gives?