Observed change in very heavy precipitation (U.S.)
![](https://bifrostonline.org/wp-content/uploads/2018/05/Observed_change_heavy_precipitation.jpg)
Percent changes in the amount of precipitation falling in very heavy events (the heaviest 1%) from 1958 to 2012 for each region. There is a clear national trend toward a greater amount of precipitation being concentrated in very heavy events, particularly in the Northeast and Midwest.