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Good point! There is no Good point! There is no single cause of drought. The PDO is a major player in California weather, but not the only one. Historically, when the PDO is negative, the West is more sensitive to a variety of factors and more easily turns dry.

2015 Special Edition Garden GuideCooking Fresh with The Old Farmer's AlmanacThe Almanac Monthly Digital MagazineWhat the heck is a Garden Hod?