
SnowGoose69
Professional Forecaster-
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Everything posted by SnowGoose69
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Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
PHL got nothing. The snow band got to about WRI/NEL and that was all...as a matter of fact WRI I think got 3-4 inches in one hour and then the snow band immediately kicked east again...that was when the NYC NWS and most private sector forecasters realized it was not gonna happen -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
12KM NAM coming in more S-E with later changeover...definite move towards Euro idea albeit it was a just a nudge...at same time the 12km NAM delayed the sleet change by an hour or so...the 3km isnt in far enough yet -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
I want to see some sort of south shift on the 3k NAM...the HREF/NAM combo argues the Euro is likely a tad too far south tomorrow with the snows which would indicate 4-6 is likely for NYC before any sleet changeover...the sleet changeover if you blend the NAM/Euro is closer to 23-00Z but the amounts are obviously less -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
The RGEM is probably way too late getting the snow in...the one thing I learned this winter is never go against start time on the 3km NAM. It has repeatedly won that war while the RGEM has lost. The RGEM still gives pretty good snows 17-21z like the NAM does, it just has nothing really from 10-16z -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
The NAM idea wins IMO 75-25...the NAM is probably underdone on the post 22Z activity but the GFS is overdone I think Thu night and Fri. The setup screams to me overall that nothing big is coming from the coastal outside of eastern SNE.. -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
the 3km NAM is correct about 8 out of times but those 2 where it is overly aggressive on the warming can really screw up a forecast because 2-3 hours too early on the changeover can be 5 inches more of snow if you're seeing heavy rates just out ahead of the changeover line which you often will -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
I am suspicious of where it shows that warm layer...given the winds I more think that the warming in the 650-700 layer is underdone and that warming below 800 is overdone...I still think NYC flips over to sleet by 20 or 21Z at the latest -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
The totals may be underdone a bit on the NAM...if you stop at 20Z when it shows NYC going to sleet the 3 and 12km average out to only 3-4 inches...given the frontogenesis showing up I think the period from 17-20 see could have moderate-heavy snow and it really is not indicating that so I still think 4-6 is more likely. -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
Inside 48 it has not been overly crazy...beyond that it has been. -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
Some of that is likely sleet....I estimated on QPF about 5.5 in NYC through 00Z...I don't think we can assume all of that post 00Z QPF is snow -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
Same idea as Euro...the best WAA stuff misses NYC just south then the main coastal stuff regenerates but mostly well north....its probably around 5 inches in NYC if I had to guess....I assume everything after 00Z is a mix -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
I LOL'd at the insane area of 2-3 inch per hour rates on the 3kn NAM....given the general trends in recent storms its exactly where you want it 36-42 hours out if you're near NYC -
At least at this range it has, inside of 36 though many of them have ticked back and ultimately verified a tad NW in the end of the models in the final 12 hours
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Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
The EPS through 54 is a tad more north with the precip than the Op -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
Timing is more logical on Euro now but at same time I agree with bluewave this thing is too suppressed -
The UKIE has that same bizarre evolution the Euro has with the late arrival of the snow...its likely both are sort of killing the WAA and transferring energy to the new coastal..its only explanation I have why they both dont have precip til like 00Z or later and all other models are 12 hours earlier
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Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
The UKMET has that funky late start time like the Euro -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
The 700mb jet on the NAM is more NW than most other models...at this stage I would have to assume it is wrong given its an outlier and its beyond its best range. That axis of orientation of the 700 jet though is more favorable for areas NW of NYC -
Its actually showing up on CIPS analogs fairly high up, or at least it was last night.
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Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
Coastal areas want the non NAM progression. The NAM is still more west and north, particularly as the system crosses through areas 24-36 hours before reaching the area. Coastal areas in these setups always want the main WAA precip to be approaching at an angle of 180-200 or so...if the setup is aligned so that its coming from more W-SW than that your system is tracking more west than you want and the main WAA is going to your NW. -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
Not so much....the Euro is simply less aggressive with speed of the shortwave and WAA strength so there is a big timing difference in start of the precip vs other models -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
Well 2/11/94 is one of the top analogs showing up and that was Baby PD2 to a degree or non roided PD2. This really does not resemble 2/11/94 or 2/16/03 though other than there being a big ass high over SE Canada. The vort/surface features are going to be much stronger than either. This is sort of 1/3rd Miler A, 1/3rd SWFE, 1/3rd Miller B as currently modeled. We've had many SWFEs with that broad progressive 500 trof moving from the Oh Valley to the East Coast, but generally the surface lows cut overhead or just west and we changeover. Those types of SWFEs though are often the ones that produce the biggest front end snows near the coast. -
Feb 18-19 long duration manageable snow and ice event
SnowGoose69 replied to wdrag's topic in New York City Metro
Not changed much. The Euro is still very slow relative to the other models though -
Feb Long Range Discussion (Day 3 and beyond) - MERGED
SnowGoose69 replied to WinterWxLuvr's topic in Mid Atlantic
No doubt but the NAM is so insanely far west with the track. It’s hard for me to believe the EPS would puke on itself this badly on that idea this close in. This setup probably goes to sleet or FZRA earlier than we think but I can’t imagine the track idea of the NAM is anywhere close to right -
It’s not so much that. It’s just much further north and west with the setup overall. It’s probably out to lunch. The 06Z RGEM was well southeast of that. The mid level warmth might come in earlier than expected but I highly doubt the NAM’s idea of being so far west is correct