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SnowGoose69

Professional Forecaster
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Everything posted by SnowGoose69

  1. No. 1/7/94 there were some places on the very far north shore that got like 5 inches of snow while the south shore was FZRA all day but that’s closest example I know
  2. Yeah something is just off. The whole transition occurs far enough south you’d think this thing would be more or less “stacked” or at least relatively close to aligned. But the 700 is displaced by a big margin IMO compared to what would normally be seen. The whole forecast is toast if that doesn’t transpire for many who cut down below 10 inches
  3. This is partly why I wonder if the models aren’t handing the mid level lows correctly. I’ve been bothered all along by the fact there is such disjointed nature between the surface and mid level lows with this. If that ends up happening the GFS will end up correct for the wrong reason
  4. The Euro had been most south with that part of the storm but the 18Z run definitely ticked north with it
  5. I don't see a huge change in the 18Z Euro...it may be a tad faster if anything. Seems maybe a nose north on the 12Z Thu AM panel
  6. I tried finding a specific storm which was similar to this. None since 1980 came up. Its not a true SWFE where we flip to sleet or rain. It has similarities to 2/13/14 for sure but also other storms. 12/14/03 is still the top analog on CIPS but this setup at 500 is way different
  7. These maps show you the Euro WB snow maps are likely wrong for say JFK for example. Likely counting sleet so I'm sure reality Euro has only 5-7 at JFK. Those real accurate Euro snow maps from ECMWF usually get shared illegally somewhere but I have not seen them yet today. https://www.pivotalweather.com/model.php?m=ecmwf_full&p=prateptype_cat_ecmwf&rh=2020121512&fh=36&r=us_ne&dpdt=&mc= https://www.pivotalweather.com/model.php?m=ecmwf_full&p=prateptype_cat_ecmwf&rh=2020121512&fh=42&r=us_ne&dpdt=&mc=
  8. The one similarity between the RGEM and GFS (especially the HRDPS) is that they both want to go just snow or rain and not so much have the period of sleet
  9. Its not even close either. Normally the GFS would be like isothermal 0 or -1C and you just figure its under compensation for mid level WAA. Its like -5C lol
  10. I think the GFS as far as areas down by NYC/coastal SNE not changing precip over is a result of the unusual nature of the setup where the surface low basically passes SE of everyone with a strong high to the north but the 700/850 lows are displaced NW. Usually the GFS will torch the BL in this type of scenario and show rain but because of that high pressure it is not even doing that so its more wrong than it even normally would be
  11. The GFS is basically operating like a model in 1985 or 1990. Its not seeing the mid-level warmth that would happen despite the mid level low tracks. Normally the GFS nowadays compensates by showing rain but its likely being confused by the strong surface high to the north.
  12. The biggest difference a tick in the surface low track might make is in that snow early Thursday AM. The mid-level lows are still going to cross the metro but if the surface low takes a 30 mile jog from where the NAM has it now that CCB like area could do more damage here 08-13Z Thu AM
  13. The 3km NAM flips JFK at 03z and LGA by 04z to sleet. This is pretty much in line with what I have felt all day. I can't see more than 6-7 inches at either place unless something January 87 like takes place in those few hours before
  14. The warm push and dry slot will destroy the temps and snow growth in that layer. I don't think anyone who punches into that nose sees more than just ugly poor growth snow
  15. The high position and the approach of the shortwave/low aren't as good. I've posted a few times the high center near PWM and the system riding north along the immediate coast is the setup to watch. The high in this case is centered more NW and the system is riding more NE or NNE from a point inland. A place like Harrisburg would be the spot to watch for a surprising front end blast as they sit roughly in the same correlated spot NYC was in November 18
  16. Both are technically a bit beyond their range. They won't be grossly wrong but they might have overcorrected 30 miles or so which would result in a massive change for some areas.
  17. The 3km NAM is so far west NYC might not even snow til 23-00Z so basically would be 3 hours of snow to sleet to rain lol
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