Foreshadowing in Harry Potter

[prefectmarcus]

No: HPFGUIDX 39490

All this talk about foreshadowing has got me thinking.  How much 
foreshadowing is there in Harry Potter really?  

I am not talking about hints, small details that become important 
later, and possible red herrings.  I am talking lightening struck 
trees ala "Jane Eyre."  Things like a strange shadow falling across 
Cedric's face, Lupin standing under a picture of a wolf, that sort of 
thing.

Harry talking to the Boa Constrictor is not a foreshadow.  It is a 
detail that becomes important later. Lupin's lunar-boggart is a hint, 
not a foreshadow.

I know we have dreamed up a whole bunch of them, but what foreshadows 
have we actually seen come to pass?  Would Psuedo-Moody arriving with 
a Clap-of-Thunder be considered foreshadowing or just a dramatic 
entrance?

I am curious at your thoughts.

Marcus