The featured chart attempts to answer the question of what was missing from the precipitation for Des Moines during 2012. The chart divides up the daily precipitation totals into 5 bins that over the long term have each contributed 20% of the total. For example, the first bin of 0 to 0.29 inches on average provide 20% of the yearly total over an average of 134 days. On the high end, there are an average of 3 events of over 1.51 inches providing another 20%. The red bars are what was observed in 2012 along with the contribution to the departure this year in red text. One category clearly dominates and that was a lack of events between 0.92 and 1.51 inches. While the difference in days at the lowest bin looks significant, the actual departure of total rainfall was marginal.

Voting:
Good = 25
Bad = 3

Tags:   precip