That 200-250kt jet would indicate there is potential for more QPF...not surprising the RGEM/NAM are showing the most generous snows along the coast from DE to MA...they may be picking up on that while the GFS cannot.
Thats a pretty stupid jet core in place...would not be surprised if there is more QPF spit out than being shown now, especially by globals like GFS which have nothing
Given the GFS continues to get better with the NRN stream you can hope its crapping the bed with the dampening of the SRN stream which even now after all the improvements it still regularly does...the 06z Euro was definitely "better" than the 12Z GFS so I would not toss this one yet.
The GFS surface low track given what it has going on is way too far east, that said the CMC is probably not realistic either but something notably further west than the GFS is likely in such a setup
Depends...the GFS did recently get schooled by the Euro but given how important the NRN stream is here you can certainly argue the way its gone this winter the GFS may be more in tune with this
I know someone saw that the other -PNA Decembers which were close in amplitude to this one that Jan/Feb both averaged below normal after in the Eastern US so perhaps some type of forced change to the pattern as a result of a persistent -PNA like that
The air mass is way too mild and the pattern does not really support anything to be deep/slow moving enough to manufacture its cold air...this would probably be mostly rain or white rain even if you did have a 980 something low inside the BM because it would just be too fast moving
Would not be surprised if we see the NAM/GFS switch places the next 24-30 hours...this is not a CAD event but still a low level CAA setup that the NAM would handle better inside 24 hours so don't be shocked assuming the RGEM/Euro camp wins this one that the GFS/NAM flop places on timing
In a setup like this though with persistent N-NW flow starting by 06-07Z I am suspicious about the low level cold air getting hung up like that...that is more common in a CF type scenario or a classic system with NE winds
I mean the setup didn’t really change a ton on that run. The NAM simply donked off all the precip back to PIT/ROC it had from 72-84 the previous run. The thermals post 12Z Friday weren’t tremendously milder so ultimately if the QPF swing isn’t real the threat is still very much the same for now
00Z NAM at LGA is 42/32 12Z Friday and 33/21 at 18z...so somewhere probably around 15Z it flips...MOS does not really resolve evaporative cooling so based off that dewpoint drop it would tank to 32 fairly fast
Yeah my uncle in Quogue over a few blocks from KFOK got 24...there were some big amounts there south shore but not many reports. I think Blue Point had 22
Yeah the GFS/GEFS has largely been more SE ridgy overall D5 and beyond last few runs than the EPS/GEPS which is odd given it cranks the MJO into 3 and many other MJO guidance plots showing nothing like that
their storm total should be 8.7 as of 1pm as they reported 7.5 at 1pm and had 1.2 yesterday. The 420 climate report though has 7.3 which makes no sense...should be about 8-8.2 for today as both LGA and JFK added around 0.5-1.0 from their 1pm total