By Gary McManus, State Climatologist — January 2017 would have been remembered as exceedingly warm and dull if not for the visit from a powerful mid-month winter storm. The storm struck over the weekend of Jan. 13-15 and prompted a State of Emergency declaration for all 77 counties by Oklahoma Gov. Mary Fallin. An unusually moisture-laden weather system for January, the storm left the northwestern half of the state encased in ice and the southeastern half waterlogged. The freezing line meandered about the I-44 corridor at the beginning of the storm before slowly retreating to the northwest, bringing a mixed bag of impacts from southwestern through northeastern Oklahoma.