jm1220

Well, if there’s 5” of snow at 10-1 ratio (0.5” liquid) then 1” liquid as sleet, that’s 8” total with sleet at 3:1 ratio. And again I don’t think this is gospel correct but it’s been consistent enough today to think it has to be onto something since it’s usually a little better at finding these warm layers, although it often overdoes it somewhat.

We’ll know in the morning as the snow shield comes into the area. We need the hellacious thump the RGEM models and HRRR/RAP show.

At this point the NAM is probably overdone a little with the warmth but it has something of a clue. I believe it more than the cold HRRR/RAP that I’ve seen come in too cold in SWFE setups.

It’s getting to the point where I start considering it. If other models trend south/colder tonight it’s onto something.

At 21z tomorrow it has sleet south of NYC still and keeps trying to wash it out as it advances. If that happens most of us will be very very happy. I’m still wary of it being too cold in these setups though.

Put all observations in this thread. 14 here currently, hoping I can luck out and make it to double digit snow/sleet combo. Good luck to all and may the yellow sleet line on the CC radar get curb stomped.

The heavy precip will help for sure cooling the column for a while but eventually all guidance gets the sleet line through the city and LI, probably by 4-5pm. Just north of the city it could go back and forth.

Yep, they still get the thump to start maybe 4-6”, but the easterly fetch eventually gets temps over 32 especially near/east of the Garden State Parkway. Interior S NJ might have an icing event since I think this surface cold will be hard to dislodge.

Yep seems to be a LIE dividing zone as happens so many times. Most areas here are covered in at least some snow. I was in Long Beach on Thursday and nothing.

No. Maybe Montauk and a tiny part of the twin forks. I’m more worried about it for the NJ coast where there’s a much longer fetch off the ocean on ENE wind.

So would probably add up to about a foot even if assuming 10-1 snow ratio. 0.6” as sleet would be 1.8”, almost 2” plus the 10” snow.

Oh man am I praying.

I’m hoping for the freezing drizzle at the end-maybe it happens in the dry slot when there’s little lift. It’ll encase everything into a glacier.

Take the betting stuff to banter. I get it lol but keep this for storm discussion only.

Back down to 14.

Very dry air though. Dewpoint is -11 at JFK.

It has crappy resolution which results in the weird snow map outcome but it doesn't have a heavy consolidated snow shield like the RGEM group does. Has an inch per hour maybe which is moderate snow.

The nature of this storm is pretty clear that New England would get nailed a few days ago. It was pretty clear to everyone this wouldn’t end up a VA/Mid Atlantic snowstorm. Retreating high, retreating confluence, trough in the west and SE ridging=SWFE that favors I-90, Boston over to Albany and S NY. The initial high pressure/overrunning gives people like us down to DC a fighting chance but the best is along I-90. I-84 should do very well too.

Starting to get to that point but I’d say tonight we pay more attention. In any event we’ve seen the HRRR gradually getting warmer although still impressive at 18z.

Looks lame/warm again like 12z. If we’re punching sleet up to I-84 here, people near the coast might barely eke out a warning event. Hopefully tonight 0z we resolve this one way or another, if not we watch the radar in the morning to see how the snow advances in. That’s really the difference maker here.

Shoulda woulda coulda?

Winters for the last 20 years in Central PA have by and large been horrendous. I’m glad that most of that region should do well tomorrow but the long term average for State College, Altoona, Williamsport etc is over 40” snow per winter. They’ve been able to manage that in their few high end winters in the last 20 years but by and large way below that. Way too many SWFE’s that turn into sleetfests, cutters or Miller Bs that develop too late, much fewer Miller A coastal huggers like 3/1993 or storms that would redevelop offshore in time-now these are good I-90 snowmakers not I-80. It started right when I went to school there and never really improved. So I’d say there’s definitely some long term shift that’s screwed them over and not some short term correction that will easily reverse.

Hopefully tonight's 00z gets better, then I'll start to legit worry it's onto something. I consider this the low end and RGEM the high end if all goes perfectly. This run looked maybe a hair better but all in all still sucks. Tough forecast for NYC because it's really a couple hour difference and intensity of the initial snow.

Looked maybe a touch warmer to me. Sleet gets here by 22z roughly.

Unfortunately with the late developing coastal, you have easterly winds for a while which warm up the surface.