March 2017…jackpot went from just NW of I-95 to well inland as the low hugged the coast which introduced mixing issues for lots of people initially projected to remain all snow.
This feels like deja vu with this past Tuesday’s storm. Models show a big snowstorm and then slowly back off until all that’s left is a light, maybe moderate event.
Canadian mixes up to route 202 while the LV/Poconos get absolutely crushed. 24-30” jackpot from York through the coal region into the Poconos.
Now we just need the GFS to join the party…
Southern stream does end up being slower which is what we want. The problem is there’s way too much confluence pressing down suppressing our storm to the south.
Euro ensemble mean is 6-9” at 10:1. With ratios that’s more like 8-12”. Complete insanity for a mean 7 days out. Of course things can still go wrong. Last week there was a big signal for this Tuesday (although not like this). It ended up being a pretty weak event for most of us. So we have to stay cautious even though the snow maps look pretty.
The fact that this changed so much from 12z to 0z means that this is far from wrapped up. It all depends on how that piece of the PV behaves. If it stays too strong or dives too far SE this goes back to being cold and dry.
We only want it as far south as possible if it drops west of the Great Lakes. If it’s over the lakes or the northeast it suppresses our storm to the south.