2016 Water Year in Review
From the November issue of the CLIMAS Southwest Climate Outlook
Water year precipitation (October 1, 2015 to September 30, 2016) was below average in much of the Southwest, particularly in Southern California, most of southern Arizona, and western New Mexico, and average to above average in northern Arizona and eastern New Mexico (Fig. 1). Spatial representations of cumulative water year precipitation adequately characterize the overall distribution of above- and below-average precipitation totals, but they do little to document the month-by-month accumulation of precipitation. This can be important, as heavy precipitation events such as tropical storm activity or monsoon events can quickly boost yearly totals, but with a lesser contribution to long-term water storage (as water from extreme events is lost to evaporation and runoff).