Mutha Clippah Developments

[Squall52]

Quite a snowstorm happening north of Detroit, with places such as Saginaw, Flint, and St. Clair reporting 6-10" of snow so far. NE Ohio and Western PA are next on the hit list, and Jamestown, NY is already reporting 4.5". The SPC has put out a couple mesodiscs for PA,
http://www.spc.noaa.gov/products/md/md0015.html
http://www.spc.noaa.gov/products/md/md0014.html

Just like the last clipper, there is an axis where strong mesoscale banding will persist. Combined with favorable upslope in the Appalachians facing the nw in PA, there should be no problem attaining 6-10" there as well.

Some of the factors involved in generating mod/hvy snow attm...
http://weather.cod.edu/forecast/ETA/eta ... spd_12.gif
http://weather.cod.edu/forecast/ETA/eta ... emp_12.gif
http://weather.cod.edu/forecast/ETA/eta ... vel_12.gif
http://weather.cod.edu/forecast/ETA/eta ... ort_12.gif

The vortmax associated with this system can clearly be seen here...
http://weather.cod.edu/analysis/loops/w ... us&type=wv

A few problems/issues with this storm...
Will have a sharp cutoff to the south, with some mixing evident in Ohio where the low level jet mixes all the way down to the surface. To the north, there should still be a sharp gradient, but tapered off due to the ratio factor/colder temps.
East of the mountains this is a whole different animal IMO, as the storm will have to transfer its energy to the coast and redevelop offshore. Low level flow will be more favorable to bring in moisture and minimize downsloping, but I still see it taking some time to get things going in SE PA, NJ, and MD.