number of storms per month;
http://www.aoml.noaa.gov/hrd/tcfaq/E17.html
http://www.nhc.noaa.gov/climo/
http://www.emc.ncep.noaa.gov/gmb/tpm/emchurr/tcgen/
http://www.ral.ucar.edu/hurricanes/realtime/current/
http://www.ral.ucar.edu/hurricanes/realtime/plots/northatlantic/2012/al142012/track_early/aal14_2012100112_track_early.png
http://www.met.nps.edu/~mtmontgo/storms2012.html
http://moe.met.fsu.edu/tcgengifs/

http://derecho.math.uwm.edu/models/
http://www.ral.ucar.edu/hurricanes/realtime/current/

El-Nino
http://www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/enso.shtml
http://www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/enso.shtml#discussion