Quote from gwb-trading:
2013 Hurricane Season Summary
2 Hurricanes - Neither above Category 1.
13 Named Storms
Fewest hurricanes since 1982.
Weakest season since 1950.
Alarmists: "Global Warming is causing increasing and more severe storms that are going to devastate mankind".
Mother Nature: "Bullshit. I'm the boss".
Of course you are stupid enough to think one year means something. You can't help it. You're Republican.
But here's some science anyway. We know AGW is causing the surface waters of the tropical oceans to heat up. This in turn is causing an increase in hurricane activity.
Figure 1: Time series of late summer tropical Atlantic sea surface temperature (blue) and the Power Dissipation Index (green), a measure of hurricane activity which depends on the frequency, duration, and intensity of hurricanes over a season. The annual data have been smoothed with a low-pass filter to emphasize fluctuations on time scales of several years and longer. From Emanuel (2007)
http://www.gfdl.noaa.gov/global-warming-and-hurricanes