[John Nelson] produced this beautiful map of how the boundaries of US droughts have changed over the last five years with data from the [US Drought Monitor]:

Link via [FlowingData].

[John Nelson]: https://twitter.com/John_M_Nelson “@John_M_Nelson”
[US Drought Monitor]: http://droughtmonitor.unl.edu “United States Drought Monitor”
[FlowingData]: http://flowingdata.com/2016/07/07/moving-drought-boundaries/ “Moving drought boundaries”