In some areas of the United States it poured down rain, which caused historic floods, and in other areas there was a lack of rain, which caused historic drought. The Washington Post has a map for that. Purple means less rain than usual, and green means more.
Change in rain, 2016
Real Chart Rules to Follow
There are rules—usually for specific chart types meant to be read in a specific way—that you shouldn’t break. When they are, everyone loses. This is that small handful.