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January Storm Term Threat Discussions (Day 3 - Day 7)


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I think some possible good news rolling forward is the cross polar flow I’m seeing on the mid-long range gfs. Our blocking breaks down a bit and trough drops in out west. However, I look at the timing of a lack of Greenland blocking coinciding with a  -PNA as possibly a good thing. If we can indeed recycle a block, it’s just a matter of time before we get a transient +PNA. With a colder source region and (hopefully) higher heights in the NAO domain, with shorter wave lengths approaching maybe we get the SS to become more active. I’m liking finally getting cold on this side of the northern hemisphere as we approach February and March which can be dynamic and moist.

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18 minutes ago, losetoa6 said:

Icon lookin plentyyyyy cold enough at 141

Snow starting at 129 per icon 

It trended better...a decent WAA front end snow...but the big show ends up in New England... transfer is too slow and messy and the upper levels never close off until too late... DC stays all frozen though snow to sleet to dryslot.  Yea I know it shows green on TT but its well below freezing the whole storm...enough so that its probably sleet v freezing rain.  

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8 minutes ago, stormtracker said:

Same...but ICON portends something good.  Nice shift south. 

Kinda hard not to feel like we want this a little north still at this stage given the seasonal trend since the NAO block went up right after New Years...I can't remember a single wave Since Jan 1 that didn't trend south.   And some of them were literally cutters day 10 that ended up way south of us in reality, teasing us for a day or two during the transition.  

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1 minute ago, psuhoffman said:

It trended better...a decent WAA front end snow...but the big show ends up in New England... transfer is too slow and messy and the upper levels never close off until too late... DC stays all frozen though snow to sleet to dryslot.  Yea I know it shows green on TT but its well below freezing the whole storm...enough so that its probably sleet v freezing rain.  

Can we move to a hybrid where it's less pure Miller A and a evolution of 1958?

Wonder when the modeling will correctly gauge the block and the upstream features? Will be cool to see if the impact zone shifts further South( from New England) closer to our area. 

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5 minutes ago, psuhoffman said:

Kinda hard not to feel like we want this a little north still at this stage given the seasonal trend since the NAO block went up right after New Years...I can't remember a single wave Since Jan 1 that didn't trend south.   And some of them were literally cutters day 10 that ended up way south of us in reality, teasing us for a day or two during the transition.  

Gonna be kinda funny to see just how far south it gets...just how far north was this modeled just a couple days ago? Lol

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12 minutes ago, PivotPoint said:

I think some possible good news rolling forward is the cross polar flow I’m seeing on the mid-long range gfs. Our blocking breaks down a bit and trough drops in out west. However, I look at the timing of a lack of Greenland blocking coinciding with a  -PNA as possibly a good thing. If we can indeed recycle a block, it’s just a matter of time before we get a transient +PNA. With a colder source region and (hopefully) higher heights in the NAO domain, with shorter wave lengths approaching maybe we get the SS to become more active. I’m liking finally getting cold on this side of the northern hemisphere as we approach February and March which can be dynamic and moist.

That would be one way to go...or if the -NAO rebuilds we could get another setup like the next week with systems cutting through the ridge in the east under the block...but with enough cold in the pattern that can work.  Get enough of a block and the whole trough could end up spreading east and we could get waves along the boundary.  There are lots of options with the -NAO -EPO look in the long range.  Yes there are higher heights along the east coast but that is not a bad pattern imo and I bet would look different when it gets closer.  

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4 minutes ago, frd said:

Can we move to a hybrid where it's less pure Miller A and a evolution of 1958?

Wonder when the modeling will correctly gauge the block and the upstream features? Will be cool to see if the impact zone shifts further South( from New England) closer to our area. 

The south trend has been when storms get under 200 hours and usually continues until about 100 hours...from there on in the shifts become a lot less significant and more fine tuning details.  Some even do end up nudging north some the final 48 hours...but by then they were all so squashed it didnt matter to us.  

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