I’ll leave the snowfall map to others, but the 06z NAM nest is similar to prior. Lose the column at 5pm after 0.15” precip in DC, lose the surface at 7pm after an additional 0.15” frozen.
We know to a pretty good certainty that the 850 low is going to go over or just west of DC. What that practically means in terms of timing, front-end thump, and ratio of snow/ice/rain is still to be nailed down, and that's where the meso models will help.
Despite all of the little changes across all the models, we just keep coming up with the same thing. Front end thump to rain for DC. It has looked like this for days and I really doubt it is going to change now.
Had to get something out of the 6 years of college.
850 low is going to track just over DC or to the west. No major improvement. Still a decent front-end storm.
The surface low path on the ICON is interesting. Just offshore SC/NC, over the southern Outer Banks, and then it curls back under the 500 low west of Va Beach.
I know we've seen it on every model, but it still boggles my mind that this thing is going from an extreme positive tilt to a negative one in such a short distance.
Not perfect matches, obviously, but that negative tilt over the southern plains to a bowling ball over DC is a good match for Jan. 2011 commuteaggedon.
Yeah, we probably lose the column at 4z or 5z. Not a lot of difference in freezing lines between surface, 925, 850, and 700 is not a problem, so if there is a mix, it would be a short period.