A well developed southern stream shortwave will merge with a strong spoke of energy from a Upper low diving down out of canada and winter weather will result as a baroclinic zone sets up. A band of precip will develop along and in advance of an arctic cold front and will slide through the state tomorrow and Saturday. Where these two energies meet up will be ever important as to the outcome.
This precip will probably start as rain in most places but will quickly and dynamically change to snow due to strong cold air advection and wet bulbing. Flash like freezes will take place and driving conditions could become hazardous very quickly.
Due to the uncertainties I have just made a probability map and counties in grey have the best shot of seeing an inch or more of snow.
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