In case you have not yet heard it on the twittersphere, here is something you should really look into: there is a so-called “red” threat that the ISS is being hit by debris. The ISS crew is currently closing hatches and preparing to move to the attached Sojuz return vehicle, in case this should be required. The full story is at nasaspaceflight.com. I also strongly recommend to dial in to NASA mission audio. The critical time is 5 minutes around 11:39am CDT.
Thankfully, the event is now over and nothing happend (no news is good news :-)).
Here is a picture of the two satellite trackers around the time of the close encounter. Have a look at latidue, longitude and elevation in the trackers.