In lieu of the killer tornado that hit Oklahoma city on May 20, 2013, Slate published a map of the most devastating tornadoes to hit the United States since 1950.
As seen in the map, the southwest is the region with the highest frequency of devastating tornadoes.
Source: Slate: Map of the Week: All Killer Tornadoes Since 1950
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Temperatures for the U.S. contiguous states in 2012 were 1 degree Fahrenheit warmer than the previous record temperatures of 1998. Based on preliminary data the National Oceanic and Atmospheric Administration (NOOA) created the map above, where it can be clearly seen that across the nation warmer temperatures were registered. Nineteen states from Massachusetts to Utah, experienced record warmer temperatures.
2012 was also a year of record low levels of precipitation, below average. Drier than average conditions affected the central parts of the United States, with negative consequences for agriculture. The winter season 2011-2012 was affected by higher than normal warm temperatures as well.
As the economic damage from Hurricane Sandy is still being evaluated, we took a look at the damage from weather/climate-related disasters over the past 30 years. The National Climatic Data Center (NCDC) at the National Oceanic and Atmospheric Administration keeps detailed statistics of all weather disasters in the US. One of the visualizations the NCDC has created is a thematic map of billion-dollar weather events, which can be seen above. The map shows the number of events that caused at least a billion dollars in damage by state. Southern states suffered the most damage up until 2011. The colors in the map may look significantly different once the total tally of Sandy is calculated.