Droughts of the Central and Southern Rocky Mountains

The authors of this study concluded:

...Severe drought is no stranger to the central and southern Rocky Mountains of North America. Episodes of extreme dryness are naturally recurring products of various climate "regime shifts" in the Pacific and Atlantic Oceans. There is, therefore, no compelling reason to associate any such drought of the present or future with global warming, as climate alarmists are readily inclined to do, having stated publicly in many venues that increases in both floods and droughts can be expected to accompany CO2-induced increases in global temperature...