what the 0z giveth....the 6z took away...snow wise.
That storm has been showing up for quite some time, so I'd think we'd all agree something is likely in that timeframe.
When 0z has 540's over my house, to 6z in southern Michigan...I'd say the window is open a plenty for this one.
Buckle up boys n girls.
edit: i shoulda looked a the Ens runs, and they say window wide open, as there is little continuity for that Black Friday storm, and they show no cutoff low on the 500's, and have a more progressive look.