December 16th, 2010

Morgan Webb 2

Weatherperson Shane says: "Snow, snow and more snow"

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In an EXCEPTIONALLY rare change of heart the Euro model has revised its stance on the Sun snow chances. Since this revision is now 72hr away it must be the result of more accurate upper air observations. IOW, the revision is likely important and more right than wrong

Since this is the first “westward jump” shown by the EC, and models tend to adjust in steps… that implies that additional revisions, probably westward, are likely in the next 24hr. Therefore we should at least understand the increasing risk of a “significant” snowfall Sunday

Verbatim this would mean 3” – 6” on Sun with > 8” east of DC. For those that like Xmas the Euro has gift…it’s forecasting just about 9” of snow next Thurs. Unfortunately the Euro’s 168hr accuracy is only 74%