Euro says 14" of snow for SBY according to Bob Chill. Two camps. Not sure what the temp biases are.
EDIT: Euro is usually a little warm. Let that be the case and SBY could be sitting on a foot plus. Wonder how much the rain will knock down.
Did it? I never saw the maps for the Euro. A 30-50 mile shift is not at all unusual with a big dynamic system like this. 12Z GFS came in cold, looking like 10-12 for SBY from the low-res clown map.
My best guess is 3-6 followed by a period of rain, followed by another 3-6 at the end. Total snow on the ground at the end, maybe five inches?
That's entirely unscientific and based on my own hunch.
Poor snowdude! Two camps it seems. GFS gives a couple of inches and a lot of rain, Euro gives us a bunch of snow with some mixing and rain, but not a ton.
NAM came in west over the last two runs and shows us dry slotted at times, reducing our totals to ~4 inches. Yeah, it's the NAM,but it's in its wheelhouse now.
Curious to see if GFS does the same.
Tough forecast for you over the next 24 hours. Models still call for ~10 inches in SBY, but when does that fall? How much gets knocked down by the rain? How much comes on the back end? Etc., etc., etc. There's a reason NWS is so slow to decide on how to handle us a lot of the time.
I think it's related to the quantity of warm air we're talking about. The low is simply too far inshore for us. But I like that you're keeping the dream alive! Remember, we only need 30 miles.
This will be our problem. I would expect a good thump up front, brief mix, extended rain, brief mix, then snow again at the backend. I would imagine the only accumulation will be a base layer of slush and then whatever comes at the end.