In a previous blog posting, I wrote about how our 30 year average rainfall in Fargo Moorhead is currently 22.75 inches up from the previous average of 21.19 inches. This new average is based on the years from 1981 through 2010. It is important to remember, that the 1980s were generally dry with an average rainfall of only 18.64 inches, but the 1990s and 2000s the average increased by 6 inches per year with an average of 24.80 inches. Therefore, the current 30 year average does not reflect just how much additional rain has fallen in the area in the past 20 years.
In my numerous public talks on the recent flooding and wet cycle, I emphasize the simple fact that in the past 20 years, Fargo Moorhead has received over 100 additional inches of rain when compared to what fell during other such periods in the 20th century. Plus, many other locations have been even wetter.
It is no wonder flooding has been so frequent in the past decade.