Originally posted by Ushgarak
I think it is also important to recognise concept here. Yoda basically survives because he has a non-Clone army with him as well; all the Jedi who are only with Clones die except Obi-Wan (in theory).They can't exactly spend five minutes exploring this in detail on film so that montage did it all. But Ki-Adi sensed something up, so we can assume others did too.
As for sensing it before it happened- well, as we know, stuff Sidious does seems to be future-sense proof.