In 2012, 11 billion-dollar weather disasters in US

According to NOAA, 2012 brought the United States 11 billion-dollar extreme weather and climate events. 

Seven of these events were triggered by severe weather and tornadoes, two were hurricane-related, and the other two disasters were brought upon extreme drought across the United States. Out of all of the U.S. disasters, Superstorm Sandy will become one of the costliest ever to occur within U.S. 

Two most expensive 2012 U.S. weather disasters have been ongoing drought ($40 billion in damages so far) and Superstorm Sandy ($62 billion so far).

http://earthsky.org/earth/in-2012-11-billion-dollar-weather-disasters-in-us