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SnowGoose69

Professional Forecaster
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Everything posted by SnowGoose69

  1. The HRRR has definitely advanced start time up to as early as 0640-0645z now. Several hours back was closer to 08-0830
  2. Its pretty similar in terms of speed/amounts to 2-17 and 4-2 2018, both events had much lousier air masses in place and the setups were not the same but I don't recall any other storms that dropped 6 plus in many areas in a shorter span than those did.
  3. Its impossible to know. The entire pattern and events over the preceding days would have evolved differently. But if you assume everything the same then yeah the evolution is slower and the storm probably exits slower and you have several more hours of snow
  4. More like the Feb 2018 and April 2018 events...not quite as heavy and wet but both dropped 4-7 inches in about 5 hours
  5. One thing is for sure, I'll take a guess it won't be like February 2017 or 2018 and thats a win
  6. In recent years probably due AGW and the W NATL SSTs, systems which in 1988 would drop 2-3 now drop 5-10 regularly despite same MSLP and similar H5/H7 setups. But two factors have tended to keep coastal events in check despite 8 of 10 following the scenario I outlined...fast flow and brief separation between departing system and incoming one...in this case we basically have both at work so I feel aside from a small area of mesoscale banding this event is not gonna be a big one
  7. The NAM is always unpredictable as to when its handling an event well or not...often times when from 48 or beyond it continually shows the same thing over and over its onto something...that theory failed a few days ago though when up until 30 hours out it was the only model missing the MA by 200 miles consistently.
  8. There is pretty decent snows shown on that run to PHL or so due to the s/w but ultimately the transfer or evolutionary process of the coastal is jacked...that could be due to extremely fast flow or many factors but its probably the extreme end of the worst case scenario of how a s/w that good could fail for places PHL on North and east
  9. LOL that NAM run is the only model run in history to actually show a shadowing effect to the full extreme as the coastal forms...in reality though it would never ever verify to that extreme level
  10. That NAM run takes the shadowing effect of the transfer to a new level...models usually underdo it, that run actually overdid it
  11. I am always wary these recent years of assuming fast speed means less QPF...this is not 1990 anymore, the warm SSTs in the WATL and other factors are leading to way more banding features in these storms now
  12. You'd have loved the NGM. The NGM would regularly throw back major snows into air that could not support someone's breath
  13. The ridge out west is flat and the pattern is progressive, but the S/W enters the lower 48 so far west and has time to dig down into the Central Plains/TN Valley which might be able to counteract the negatives...if the S/W was coming in over ND/MN and diving into the Oh Valley/Apps I would be more concerned it would just be shunted out eventually
  14. Yeah, this one would seem hard to totally lose at this point but we have seen these go poof before at this range. I feel if you're NYC north you're gonna see something, south of there with Miller Bs you can always see this thing keep trending towards later and later transfer or development
  15. Maybe, the ridge out west is very shallow and not particularly tall and amplified...but the shortwave drops in fairly far west in ID/MT/WY that despite that it has the time to still sharpen...as usual without the -NAO and a stout west ridge there are small differences which will impact this
  16. Its not especially common to have an inland running Miller B...we usually either straight up fail because it redevelops at too far north a latitude or goes OTS....there are a few instances of classic Miller Bs which went over top of us or just west but its not a very long list. They've tended to occur when the western ridge is on or off the W Coast vs over the Rockies. What MAY happen here is this simply does not become a true Miller B and the primary goes way into OH/PA..
  17. The 89 event models actually began backing off on the 00z run the evening before but forecasters were slow to react. The 12z runs morning of 2-24 pretty much showed zilch but again they didn’t really give up on the forecast til 3-4pm. ACY has had .24 liquid this hour lol
  18. Its 100% of the time overdone but I don't remember any cases of it showing something that big 12 hours out and the event being a total whiff. I'm sure it has occurred though
  19. Almost all of their big La Nina snow events occurred in fast flow patterns with no -NAO where a storm was not able to go NW
  20. Pre upgrade this would freak me out as the Euro was automatically 30-50 miles too far SE with everything, but last few months its been on the nose mostly.
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