Popping into from the mid-Atlantic board out of pure jealousy.
There is a poster named Jeb who used to live in the DC area. He was an eccentric sort and would talk about his obsession for snow and going out in it. Jebwalking in the snow became a common saying on our board and it filtered around.
The exact position of the surface low didn’t end up mattering as much as the upper air features. The 850 low, which is both broad and late developing, is basically over DC allowing the warm air to flood in. We always want an 850 track to the south of DC by a fair margin.
Really impressed with the staying power of the snow. At least .75” liquid on top of 1.5” of snow and it is largely still around. There is still snow on our lighter colored car (not the darker one).
It looks like the two low situation is due to a meso-low from the NC thunderstorm complex on the 3km NAM. Not sure that it plays a huge role in the thermal profile up by us.
NAM comes in hot and heavy. 18z R/S line is about DCA and then it blows north by 21z. In that period, however, there is ~0.5” precip. The longer that the transition holds off, the better we can do on the front end.