Drought conditions will maintain across a significant portion of the contiguous United States during December 2017

According to the US monthly drought outlook issued by NOAA CPC in November 30, the current severe drought conditions will maintain over the southern US. This is likely due to the developing La Nina condition in the Pacific. During La Niña, the winter atmospheric jet stream in the Pacific often takes an unusually wavy path into the US from southwestern Canada, causing warm and dry conditions over the southern US. The developing La Nina condition is likely to be responsible for the ongoing explosive wild fires in south California. As such, it is also likely that the chance for wild fires in Oklahoma and other southern US states will remain high during December 2017.

http://www.cpc.noaa.gov/products/expert_assessment/mdo_summary.php

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