Washington Post rainfall data analysis

WaPo posted a very nice map of the continental U.S. rainfall in 2016 and how it compares to the yearly averages.  This is a great first step, and I hope they follow up, for example:

• looking at the series of years to see whether 2016 is an outlier or part of a trend
• digging down into rainfall by month/season 

h/t FlowingData, via Feedly