Well, I'm heading to western NE. Actually staying in Sidney, but that is minor distraction. Wide open space, decent roads and can go east or west fairly easily if the weather changes. Madras, OR has the best % of clear skies but it is limited to 1 or 2 narrow lane roads if you and 50,000 of your closest friends decide to move at once.
I have been lucky seeing what I call 11 out of 12. The last 2 eclipses (China 2009 and Australia 2012) were only viewed for about 40% of the alloted time. The other 10 eclispse were clear skies. As for scattered or broken, I would not worry too much about that. It has been known that a broken sky is clear enough a few miles down the road.
For those who are younger, there is another total solar eclipse in the USA in 2024 as well as 2 good eclipses in Chile/Argentina in 2019 and 2020. So if you are nearby the path of totality in the Eastern USA, just wait and see the day before.
The best sources are Jay Anderson's site,
http://eclipsophile.com/ and the NASA site (
http://eclipse.gsfc.nasa.gov/SEgoogl...21Tgoogle.html).
Previous eclipse DO's --
http://www.flyertalk.com/forum/commu...ug-2008-a.html