ORH_wxman

There's no doubt the block raises the ceiling....it creates an opportunity for a slower system that wouldn't be possible without the block (never mind the track would also be a cutter without the block). But I'd like to see ore continuity on that round 2 insert.

Yeah, I'd caution everyone not to get married yet to the Euro enhancement from that second shortwave.....that's what turns a 6-10" storm into a HECS/KU type solution, but that first aspect of the storm is becoming a lot more likely. We'll see if we can get the nitro-boosted prototype that the Euro/EPS are selling as we get closer.

Right...agreed. Once it reaches a certain point, it has nowhere to go except to track into the favorable zone. The block is creating more margin for error than a typical "unmanned firehose" type setup where tiny perturbations create large final differences in outcomes....but with that block and the pacific flow upstream forcing this system to hum along to the east into that block, it's really game set match once it hits the Ohio Valley around 120 hours.

Yeah the Euro has the snow moving into western CT by 132 hours and all of SNE by 138 hours....it's not a 200 hour fantasy at this point. There is still time to screw this up, but it will need to reverse the trends we've seen the last 24 hours fairly quickly. IF we're seeing huge Miller B solutions still at this point tomorrow, now we're like 108 hours out and that's getting into pretty good skill range for guidance.

I wouldn't expect more than a tenth or so....maybe some of the high terrain gets a little more, but most of the danger comes with just a thin glaze of freezing drizzle when temps really drop tomorrow. There could be an additional tenth or so of glaze tomorrow night as that 2nd round of light precip comes through

Yes...the mini-split flow little Hudson Bay block/ridge is a very classic feature seen on so many of our Miller B storms. It all starts with the Atlantic car pileup from that developing block.

A few posts up....brooklynwx has an animation comparing them

Get that trailing shortwave north fo Montana/Dakotas to catch up with it right as it's nuking south of us....then get a 12-18 hour stall/bombogenesis there.

Synoptically, this is pretty classic for SNE Miller B. Ohio Valley shortwave running into a blocked 50/50 low

The last time we had a threat inside of 6 days that was this good-looking was probably last winter. 12/16 did look pretty good but not sure it ever really got inside of 6 days....the last great runs we saw on that one were during the 12/10 GTG when the Euro tried to reincarnate Dec '92....but then it turned crappier almost immediately after those runs. 12/23 looked good until about D7. This is prob the closest we've been all winter to a modeled warning snow event.

EPS definitely not holding back

This is like that stretch in 1956....one after the other every 2-3 days...just don't tell Ray.

Ukie is on board for 2/28....redevelops it quick enough similar to GGEM.

LOL, it actually does but it's too phased and taints us.

Lets try and phase a piece of that PV lobe into the D9 system on GGEM ala March 4-6, 2001.

Yeah it redevelops quick enough and moves almost due east south of SNE

Good step in Euro direction that run....hopefully we keep trending that sucker.

GFS is already trending at 108....not sure if this solution will be eye candy yet, but regardless of what the final solution is, you can see the block holding tougher.

Almost every single snow "Event" I've had has been at these temps. It's amazing....even when we have like -5C 925 temps, we cannot buy a good sfc PPT prior to the storm....we get one in the middle of this storm, but that doesn't do us any good on the front end, lol. Only real exception was the 12/11 clipper-esque system where we had temps in the mid/upper 20s. We did drop to like 31F in the middle of the CCB on the 1/23 "happy ending" storm, but obviously a significant part of that one too was at 33-34.

Icon gone wild....but the reason ti did was because of the block. It was more Euro-esque and really held those lower heights to our northeast stout.

Did have a nice 3-4 hour burst here....that would be nice to grab a few. I'm skepitcal though until there's more evidence we get some good rates.

Yeah a lot of these 12z runs so far are pretty weak sauce with the precip rates this evening....I'm envisioning a lot of 1 mile vis light snow that accumulates slowly on the grass with maybe a heavier burst in the final hour before it flips. I was hoping for 3-4" but I haven't really strayed from my personal thoughts of an inch or so.

Antecedent airmass is actually decent out ahead of the storm....it's just a question of the block being good enough to force redevelopment soon enough to hold in that airmass....if not, then we erode it and get a pseudo-cutter, but on the Euro, it redevelops and we're good.

Yeah well the HRRR is usually....

3k is more aggressive with the tuck than 12k. Brings BOS below freezing by midday Thursday