I'm still not clear on what exactly shut down the bulk of the national rail network. Was it the temperature or the snowfall or the wind that suddenly prevented all trains from running?
It was a combination of all three. The snow fell very, very quickly, so it was almost impossible to stay ahead of it. It was a heavy, lake effect snow instead of a powdery snow, so that created more "packing", which is harder to remove/move than fluffy snow. It turns into these giant, nightmare blocks of snow/ice that are like glue.
Additionally, the wind created windchills between -40 and -60, so it was extremely unsafe for anyone to be outside for longer than a couple of minutes. At that temperature, any exposed skin can contract frostbite within just a few minutes.
In addition to all of that, even if they had called additional staff in, they probably couldn't make it. Police were telling everyone to stay off the roads unless it was an emergency. The CTA buses did the best they could, and I'm amazed the trains were simply delayed, not canceled. (I may be wrong; I checked the CTA site afterward, but not during. Maybe NorthShore or Steve know if the CTA ever shut down completely.)
Anyway, this was in Chicago proper. The smaller towns along the various routes in WI, IL, IN, and MI don't have those mass transit options, so anyone called into work from those towns would have been stuck. Our office was closed on Monday and reopened on Tuesday, but I had co-workers from smaller towns near Kalamazoo who couldn't even drive down their street until Wednesday.
I feel for any crews who worked on the tracks/trains in that weather, and I hope nobody got frostbite.
Anyway, this is what prompted some discussion of the need for a southern hub, as the conditions in Chicago had a trickle-down effect on the majority of Amtrak's rail network.