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February Medium/Long Range Thread


stormtracker
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1 minute ago, Terpeast said:

Yeah, it’s not so much a full phase that we were needing for a HECS, but its more like sending a spaceship around a planet where its gravitational pull tugs it closer to the track we want. 

When you post good things happen.  I dig your analogies.  

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Well, this continues the mantra I mentioned a few times yesterday about how delicate this setup is. There’s multiple ways to score, but also to fail and indentifying exactly how all pieces involved behave is going to take some more time before we can truly lock into something. 
 

The 00z ECMWF was a pause in the hemorrhaging that occurred the prior runs from other guidance. 06z kind of brought back the idea that was being entertained prior, so that signifies the delicate nature of the setup, as well as the 00z being more of a blip and not a trend. I do feel the best chance for a significant event is narrowing to east of the fall line all the way to the coast for our latitude. Further south into SW VA and @Bob Chill @Buddy1987 @wxdude64 land, the prospects for at least a solid WAA snowfall are increasing with every run. Should be a nice 850-700mb moisture transport into those areas with fresh arctic air in place. That’s a great spot to be in for at least something appreciable regardless of what transpires further downstream. 
 

Today will be another day I can see models deviating in either direction, so I’ll be taking these runs at less than face value and looking at the big picture. I figured 00z last night was the beginning of the end, but it was a small bump in the road and we’re right back to square one. NBM looked fine to my eyes. NAM (I know I know) looks like another way to score around here, so will be interesting to see if any other guidance shows a hand at that idea. I have my doubts, but NAM has scored coups before. It sniffed out the northern expansion of the 2016 blizzard into PA well before the globals did. Never know in this profession. Onward to 12z 

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2 minutes ago, Terpeast said:

Yeah, it’s not so much a full phase that we were needing for a HECS, but its more like sending a spaceship around a planet where its gravitational pull tugs it closer to the track we want. 

If you put this Composite Radar loop in motion, you can see how the tpv over the midwest sucks the precip back NW.

https://www.pivotalweather.com/model.php?m=nam&p=refcmp&fh=loop&dpdt=&mc=

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3 hours ago, Ji said:

Really disappointing. I thought we were making some progress

99% of the time the most extreme model in either direction won’t 100% “win” it will end up a compromise. Even the event today I used as an example of a euro v all win, the euro was “slightly” over amped and while it was a huge win it did come maybe 10% while all others came 90%.  So when the most east models come west a little bit it doesn’t mean it’s a west trend across all guidance or that the more west models will also go west. It’s more likely just convergence happening. 

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2 minutes ago, Rvarookie said:

For those in my DMs asking for place to stay in Richmond…the local news is reporting roads will be “treacherous” so please be safe on your drive down  

I’m not even sure how much I want the snow now. I just hope you have to build an ark for your flood down there.

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1 minute ago, Weather Will said:

WB 12Z ICON disaster...for all but the SE mid Atlantic.

IMG_5393.png

 

1 minute ago, TSSN+ said:

The differences upstairs at even 84hrs is comical. Completely a joke. 

LOL it literally pushed the purple-pink area of better snows like 100 miles southeast compared to its run 6 hours ago (06Z), and it looks drier even in that max stripe overall.

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