Actually we will pass first through ISON”s departure tail then a few days later it’s entrance debris.
What is interesting is that there could be some consequence to this debris field in that it may not burn upon entry into our atmosphere but merely float.
Depending on what is left of the Comet and how large the Tail consumes this breakup could pose interesting consequences to our weather.
Highly hypothetical....but something to watch.
Definitely something to watch...