Here are your odds of experiencing a White Christmas

December 25th is tight near — will yours be blow - laden ? This function , free by NOAA and the National Climatic Data Center , gives the probability of a “ White Christmas ” across the continental United States .

A “ White Christmas , ” fit in to the NCDC , is one with an in or more of snow on the ground at 6 A.M. on December 25th . Remember — this is a probability single-valued function , not a forecast ; meteorologists can really only predict weather a few day ahead of fourth dimension ( and even then , as everyone recognize , they can be awry ) , so actual condition two workweek from now could be much dissimilar from the percentages and distributions seen here . The probabilities on this mapping instance historical snowfall relative frequency , and were produced by averaging weather condition track record over a thirty year catamenia . According to the NOAA , they should be used as a guide , and show only where a White Christmas is more probable .

That say , some plaza are all but sealed to receive their share of Christmastime snowfall , admit Marquette and Sault Ste Marie , Michigan ; Hibbing and International Falls , Minnesota ; and Stampede Pass , WA . From a 1995 expert report issue by the NCDC :

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Generally , the greatest chance lie where they would be expected — over the northerly U.S. and in mountainous areas . In define a ‘ white Christmas ’ as hold a snow depth of at least 1 inch , the chances are 60 % or better over an country let in much of the northerly Rockies , the northerly Great Plains , the nifty

Lakes area , and most of New England . The chances are less than 20 % over most of the southerly third of the country excluding the Rockies , along with the Pacific coast .

Those interested in keeping cartroad of North American snow in the days leading up to December 25th should check outNOAA ’s Operational Daily Snow Analysis Charts .

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