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December/January Medium/Long Range Discussion


WinterWxLuvr
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16 minutes ago, SnowGoose69 said:

If we transition to more of an EPO ridge vs a PNA ridge there won’t be any blocking on the Atlantic side.  At this stage it’s too early to say for sure this will be entirely PNA induced 

An epo ridge dominant pattern is colder but way less snowy than a nao blocking based pattern. I'm not in favor of that trend. 

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16 minutes ago, Ji said:
29 minutes ago, psuhoffman said:
An epo ridge dominant pattern is colder but way less snowy than a nao blocking based pattern. I'm not in favor of that trend. 

Lol dont see an epo ridge either on that map

There isn't one. That being said, not sure why the Goose thinks there wont be any NA blocking if there is an EPO ridge. Maybe its one of those meteorological impossibilities. I suppose the EPS weeklies need to be reprogrammed.

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28 minutes ago, BristowWx said:

Without blocking I assume storms may form and track under us but not slow down and deepen so timing becomes more of a factor.  

its not the worst thing as long as NS is in the MA.  also as long as the STJ meets up in the middle of the conus, you could have overrunning events.  Were that not the case, yeah bits and pieces come  through with little/no fanfare.  

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10 minutes ago, C.A.P.E. said:

There isn't. That being said, not sure why the Goose thinks there wont be any NA blocking if there is an EPO ridge. Maybe its one of those meteorological impossibilities. I suppose the EPS weeklies need to be reprogrammed.

It pretty much is impossible.  DT has has videos before explaining that.  The downstream pattern makes it extremely hard.  You might be able to get an east based weak -NAO but that’s about it.  See 93-94 and 14-15 where more or less the NAO was positive the entire winter both times 

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20 minutes ago, Ji said:
33 minutes ago, psuhoffman said:
An epo ridge dominant pattern is colder but way less snowy than a nao blocking based pattern. I'm not in favor of that trend. 

Lol dont see an epo ridge either on that map

There is that too lol. But I was simply dealing with his statement. Not sure what it had to do with my EPS comment. This run simply consolidated the PV over the pole and lost both the epo and nao ridging. Probably just a bad run given all the trends the last few days. 

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5 minutes ago, SnowGoose69 said:

It pretty much is impossible.  DT has has videos before explaining that.  The downstream pattern makes it extremely hard.  You might be able to get an east based weak -NAO but that’s about it.  See 93-94 and 14-15 where more or less the NAO was positive the entire winter both times 

So this....

IMG_8034.thumb.PNG.5978dd15b4d1d8849c9de4681d84a6f2.PNG

what the weeklies (and cfs/U.K./jma) are all showing, is impossible?

 

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2 minutes ago, psuhoffman said:

There is that too lol. But I was simply dealing with his statement. Not sure what it had to do with my EPS comment. This run simply consolidated the PV over the pole and lost both the epo and nao ridging. Probably just a bad run given all the trends the last few days. 

Really not worth worrying about it unless this becomes a habit over the next couple of days. Even then I probably won't be concerned because..... Vegas, baby!!! :D

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11 minutes ago, SnowGoose69 said:

It pretty much is impossible.  DT has has videos before explaining that.  The downstream pattern makes it extremely hard.  You might be able to get an east based weak -NAO but that’s about it.  See 93-94 and 14-15 where more or less the NAO was positive the entire winter both times 

IMG_8043.GIF.b47a240f6cd8ab635036ed5fc51b4df5.GIF

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12 minutes ago, SnowGoose69 said:

It pretty much is impossible.  DT has has videos before explaining that.  The downstream pattern makes it extremely hard.  You might be able to get an east based weak -NAO but that’s about it.  See 93-94 and 14-15 where more or less the NAO was positive the entire winter both times 

IMG_8044.GIF.db02ceedbb84af1dad003647709835d8.GIF

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17 minutes ago, SnowGoose69 said:

It pretty much is impossible.  DT has has videos before explaining that.  The downstream pattern makes it extremely hard.  You might be able to get an east based weak -NAO but that’s about it.  See 93-94 and 14-15 where more or less the NAO was positive the entire winter both times 

IMG_8045.PNG.eda77bdd231f307461a8d1d2766439db.PNG

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19 minutes ago, SnowGoose69 said:

It pretty much is impossible.  DT has has videos before explaining that.  The downstream pattern makes it extremely hard.  You might be able to get an east based weak -NAO but that’s about it.  See 93-94 and 14-15 where more or less the NAO was positive the entire winter both times 

IMG_8046.PNG.eca7902f268ee74c8adf06c01d8ae7e4.PNG

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10 minutes ago, psuhoffman said:

So this....

IMG_8034.thumb.PNG.5978dd15b4d1d8849c9de4681d84a6f2.PNG

what the weeklies (and cfs/U.K./jma) are all showing, is impossible?

 

That was my question. Of course, his answer was that DT showed that it was, well, pretty much impossible. And we all know he is the master of meteorological impossibilities. Looks like we may need to get some of the model physics updated.

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28 minutes ago, SnowGoose69 said:

It pretty much is impossible.  DT has has videos before explaining that.  The downstream pattern makes it extremely hard.  You might be able to get an east based weak -NAO but that’s about it.  See 93-94 and 14-15 where more or less the NAO was positive the entire winter both times 

Many of our best snow periods came during a -epo and -nao regime. That is what seasonal guidance has advertised for Jan and feb. Thats why many are excited. A -epo + nao pattern is "ok" but not something to be that excited about. Sometimes they work but often they are better for places north of philly and ice or mix to rain events here. It's difficult to get a -nao if the epo ridge is too extreme as that would tend to favor troughing downstream in response. But if the epo ridge isn't too extreme you can get a ridge bridging across into the nao domain too.  That's actually our ideal look for snow in the mid Atlantic.   It requires an extremely weak PV and negative AO but that's what the idea was. Furthermore the EPS doesn't show an epo ridge. It simply lost the ridging on both sides so I have no idea what your post had to do with my comment on the EPS. 

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Just now, psuhoffman said:

Many of our best snow periods came during a -epo and -nao regime. That is what seasonal guidance has advertised for Jan and feb. Thats why many are excited. A -epo + nao pattern is "ok" but not something to be that excited about. Sometimes they work but often they are better for places north of philly and ice or mix to rain events here. It's difficult to get a -nao if the epo ridge is too extreme as that would tend to favor troughing downstream in response. But if the epo ridge isn't too extreme you can get a ridge bridging across into the nao domain too.  That's actually our ideal look for snow in the mid Atlantic.   It requires an extremely weak PV and negative AO but that's what the idea was. Furthermore the EPS doesn't show an epo ridge. It simply lost the ridging on both sides so I have no idea what your post had to do with my comment on the EPS. 

I think that's what he meant. An extreme EPO ridge and western -NAO block probably wouldn't be able to coexist, but a slightly negative EPO and NAO would. His statement was a bit misleading though and one would interpret his words as him saying ridging cannot occur in both areas.

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Just now, Ji said:

Lol I've seen many things that dt said were meteorolgically impossible happen

Yeah that's essentially the point I was making, but without even mentioning DT initially. Then he tries to back up his odd and illogical statement by literally saying 'because DT said so'. lol.

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44 minutes ago, showmethesnow said:

Really not worth worrying about it unless this becomes a habit over the next couple of days. Even then I probably won't be concerned because..... Vegas, baby!!! :D

Always high pressure in the casino.  Pressure to eat, gamble, drink, ladies. You will need a vacation after that vacation. 

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21 minutes ago, Ji said:

Lol I've seen many things that dt said were meteorolgically impossible happen

Yup - and with few exceptions most folks here are not trying to sell advertising space on their web site with a motive to have the dramatic incite interest/followers and thus raise revenue.  Thus the more followers, the more dramatic the drama becomes - a self feeding frenzy.  Still think if someone actually put together the right team with the focus on weather in the right way, they could put TWC out of business.  Heck, there's probably about a dozen or so of the mainstream posters here who could do that very thing.   

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9 minutes ago, BristowWx said:

Always high pressure in the casino.  Pressure to eat, gamble, drink, ladies. You will need a vacation after that vacation. 

And did you ever notice that once you get inside, how difficult it is to find the exit?   They do that on purpose to keep you there - just one more spin, one more hand, one more roll.  The psychological and neurological elements at play in the design of a casino are more complex than the win percentage of the DC snow hole.

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18 minutes ago, RDM said:

And did you ever notice that once you get inside, how difficult it is to find the exit?   They do that on purpose to keep you there - just one more spin, one more hand, one more roll.  The psychological and neurological elements at play in the design of a casino are more complex than the win percentage of the DC snow hole.

Thin line between gambling and weather...most times you lose but you remember the big wins and it keeps you coming back

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8 minutes ago, psuhoffman said:

The euro was kind of jumping right to the end result. The cfs weeklies get there but a week slower. They look a lot like the euro at the end early January. I think we still get there either way but maybe the analogs that suggest it's January 15-20th on are going to be right. 

Cue the ‘this feels like the winter where the great pattern never gets here and we don’t see another 1” of snow until 2020.’ 

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