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    Henry Margusity

    VIDEO POSTED: Snow and Severe Wx Maps for the Storm

    12/18/2012, 9:10:29 AM

    Commentary

    The maps below represent my lasest thinking on the snowfall and severe weather. Keep in mind, my drawing skills are not the best, especially when dealing with tight gradients of snow.

    The storm is one that will come out of the southern Rockies, move into the Great Lakes and intensify as it does so. The combination of strong winds and heavy snow will create blizzard conditions, especially from Iowa to Michigan. It's possible that parts of Michigan and northern Indiana will have blizzard conditions due to a combination of lake-effect and synoptic scale snows Thursday night. Many roads will be closed, but improvement will come quickly as the storm pulls away Friday and Saturday.

    There will be flash freezes across parts of northern Illinois into northern Ohio where the cold air comes in quickly and freezes standing water with snow on top of that.

    Winds at the peak of the storm will be gusting over 40 mph with some gusts up to 60 mph.

    Longer range....

    There is a lot of talk out of a coastal storm around Dec. 26. The operational models have the storm in the middle of the country and eventually takes the storm into the eastern Great Lakes. The Canadian takes the storm almost due ENE and tracks the storm across the Appalachians to the mid-Atlantic coast. However, given the neutral NAO predicted values, I would not get too excited about any coastal storms around the holidays. I like what the GFS and ECMWF both have in regards to the storm track and intensity. The concern for the next storm is a heavy snow event in the Mississippi Valley and a severe weather outbreak across the South.


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    The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com

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    Henry Margusity