Sources.

This is the sources. For the actual information about hurricane Irene, please see the older posts.

Via "freightcar" at Reddit.com.

Sources:

http://en.wikipedia.org/wiki/Hurricane_Irene

http://en.wikipedia.org/wiki/Hurricane_Katrina

http://www.tropicalweather.net/where_do_hurricanes_occur.htm

http://fivethirtyeight.blogs.nytimes.com/2011/08/29/how-irene-lived-up-to-the-hype/

http://www.reddit.com/r/Irene (Very helpful, contains many links to related information.)

http://www.abc.net.au/news/2011-08-29/irene-comparison/2860174

http://www.nhc.noaa.gov/

http://www.nasa.gov/mission_pages/hurricanes/archives/2011/h2011_Irene.html