Two main precipitation regions splitting west and east of Wisconsin right now. The space between will fill across north-central Wisconsin today as the low moves through. The western region is at the left exit of a diverging upper level jet. It has the strongest forcing, what I would call the true deformation zone, and starting to look pretty good. The right is mostly WAA, accompanied by weak upper divergence and the moist axis. Both areas have strong 850mb WAA. I see this happen often where weak returns are found between two clumps of precip. North-central is in between with dry slot sneaking into the south. You'd have a better chance are reaching forecast snow accums in either the west or east clump. This explains the trends in models this morning.
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