Wednesday, December 21, 2011

Probability of a White Christmas



Probability of a White Christmas


Using the recently released new 30-year normals (1981-2010) data, the NWS has computed the probability of a White Christmas across the conterminous U.S.

The attached map indicates that southern Nebraska has a 25-40 % chance of a White Christmas and northern Nebraska has a 40-50% chance of a White Christmas.

Using the Omaha data, The NWS Omaha/Valley computed the probability of a White Christmas in Omaha and it is 33% (39 out of 117 years).

Lincoln daily snow depth data extend back only to 1948. Using the 1948-2010 data, Lincoln has a 30% chance of a White Christmas (19 out of 63 years ).

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