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December 2012 Pattern Analysis


HailMan06

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The key will b how fast the 1st system gets off the playing field , so the block can get in the way and belly the second system under .

I admitt i am happy to see that kind of signal , hard for me to get too crazy at 186 hrs out .

But a lot of potential in the 10 days of the month

Just took a look at H5 again. The key, once again, is blocking. We have bit of energy that is forced to stay into the 50/50 area by the NAO, then that is replaced by the second system around the 17th, which then serves as a 50/50 for the potential big one. Lots of energy to deal with, and being so far out, there are too many variables in place to consider this legit just yet.

The good things are beginning to show up though on the past couple of runs:

Pattern responding to NAO block

PAC looking much better

Sustained east coast trough with multiple threats

If this keeps up, maybe winter has finally come to the Northeast :)

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The key will b how fast the 1st system gets off the playing field , so the block can get in the way and belly the second system under .

I admitt i am happy to see that kind of signal , hard for me to get too crazy at 186 hrs out .

But a lot of potential in the 10 days of the month

Right. Also, the PAC is still somewhat progressive during the Dec 19-20 event. There is that "flat rolling ridge" look upstream of our potent shortwave with very high height anomalies to our north. That does not scream a cutter at all, IMO.

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Right. Also, the PAC is still somewhat progressive during the Dec 19-20 event. There is that "flat rolling ridge" look upstream of our potent shortwave with very high height anomalies to our north. That does not scream a cutter at all, IMO.

I just told wife , im gona busy for the next 180 hrs ... didnt go over well .

Will be back after Euro wana see what the block looks like

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I just told wife , im gona busy for the next 180 hrs ... didnt go over well .

Will be back after Euro wana see what the block looks like

Haha :P

Well one thing is that individual OP runs aren't that important at this stage of the game. So you still have a few more days of wife time lol. But it really is fun to track what is going on with the blocking and see how well it correlates with our thoughts. And if we turn out wrong it's always a good learning experience.

But having the blocking gives solutions so much more room for error.

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The 19th storm is now OTS on the Euro

Well at least thats east of the Mountains ,,,,,, Try not to take a single operational run to heart ,

What the Euro is telling you is it sees the block , thats a good thing .

So relax 150 hrs to work it out . System 1 is colder too , so the pattern at the very ;least is changing .

So RELAX ...

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You just need enough of a SE ridge, The Euro may be shattering the Ridge too fast

In turn the second short wave escapes east . Lets see in the coming days if it back just enough '

The block is there

The eneregy is there

and the Ridge axis thru the Rockies is there .

Plenty of time to fit the final piece .Yesterday i was convinced it wasnt going to the lakes in the face of that block

I am not sure it cant escape , but i am really not in that camp yet

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Its on every model now.

My point exactly...your posts consist of nothing but guessing, trolling and nonsense.

And even then, you're still wrong. The vortex (which is actually a split portion of the PV) is centered over Russia and the Chukchi Sea ... north of Alaska, while a piece of the below normal height anomalies extends south of it into British Columbia which provides a completely different pattern than there would be if this vortex were sitting over Alaska or the Gulf of Alaska.

f132.gif

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My point exactly...your posts consist of nothing but guessing, trolling and nonsense.

And even then, you're still wrong. The vortex (which is actually a split portion of the PV) is centered over Russia and the Chukchi Sea ... north of Alaska, while a piece of the below normal height anomalies extends south of it into British Columbia which provides a completely different pattern than there would be if this vortex were sitting over Alaska or the Gulf of Alaska.

f132.gif

huh, you stated I was wrong that the PV retrogrades north of AK, look at the above map. This causes Canada to get completly cut off of the cold air supply. I am not talking a full on torch of Canada but the airmass becomes stale. With no real cold air source we are going to have very marginal setups, even if the storm track is south of the area.

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huh, you stated I was wrong that the PV retrogrades north of AK, look at the above map.

Can you even remember your own posts? Your exact post was "The Alaska vortex and PV looks to establish itself for the long term like last year". I then asked you to provide reasoning. You couldn't.

Last year, the AK Vortex/PV was farther south, dominant and stationary. There is almost no comparison to be drawn between the pattern over Alaska this year and last year. The Pacific isn't great, but last year was a monstrosity.

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Can you even remember your own posts? Your exact post was "The Alaska vortex and PV looks to establish itself for the long term like last year". I then asked you to provide reasoning. You couldn't.

Last year, the AK Vortex/PV was farther south, dominant and stationary. There is almost no comparison to be drawn between the pattern over Alaska this year and last year. The Pacific isn't great, but last year was a monstrosity.

The PV north of AK shows no signs of any real movement over the next 10 to 15 days. That is a pretty stable pattern with a -PNA. If it wasn't for the developing -NAO we would torch, even with the NAO it still a very marginal setup.

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My point exactly...your posts consist of nothing but guessing, trolling and nonsense.

And even then, you're still wrong. The vortex (which is actually a split portion of the PV) is centered over Russia and the Chukchi Sea ... north of Alaska, while a piece of the below normal height anomalies extends south of it into British Columbia which provides a completely different pattern than there would be if this vortex were sitting over Alaska or the Gulf of Alaska.

f132.gif

MJO induced ridge trying to break split the cold anomalies over the Bering Sea?

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Very hard to believe but the GFS has been taking the Euro to lunch lately. Lets see what develops its a week away.

Rossi

The Euro has not been the same model it once was since the upgrade a few years ago, it absolutely nails some events such as Sandy and some past winter storms...it undoubtedly hits some events dead on more than the GFS does but its been horrible at times the last few winters, particularly last winter.

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That's way different than the 0z run which showed a miller b.

That's right. The 12Z is more of a miller A wrapped up special. The danger is that the first

low leaves the baroclinic zone in its wake too far north allowing the second storm to

hug the coast too much.

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The PV north of AK shows no signs of any real movement over the next 10 to 15 days. That is a pretty stable pattern with a -PNA. If it wasn't for the developing -NAO we would torch, even with the NAO it still a very marginal setup.

It's not a dominant Alaskan vortex because its north of Alaska and that makes a huge difference. Plus it's not inducing a torch...and it's not in a similar position to last year nor is it similar to last year...so what's your point then? Your initial post means nothing?

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