Extreme rainfall events have become more common across much of the US since the 1950s
The trends for 1958-2016 are grouped by National Climate Assessment regions
+9%
+29%
+55%
+42%
+10%
+12%
+27%
+16%
40+
<0%
-11%
+9%
+29%
+55%
+42%
+10%
+12%
+27%
+16%
40+
<0%
-11%
+9%
+29%
+55%
+42%
+10%
+12%
+27%
+16%
-11%
40+
<0%
+9%
+29%
+55%
+42%
+10%
+12%
+27%
+16%
-11%
40+
<0%