• Hello, please take a minute to check out our awesome content, contributed by the wonderful members of our community. We hope you'll add your own thoughts and opinions by making a free account!

Pattern The Great December Dump

Remember when just a few cycles ago things were looking better for cold? Boy, those were the days, huh?
And now the GFS may be setting up for a big winter storm for 12/28...
500th.conus.png
 
Probably going to be right here.

What's so bad about the pattern? -AO, -NAO, split flow, and 50/50 PV, cold on our side of the globe. Looks to hang around. I know the Pacific is not the greatest, we need better ridging on the west coast, not the midwest, but still. You think we need the -EPO for better cold delivery to come back? That's the only thing that's missing IMO.
 
What's so bad about the pattern? -AO, -NAO, split flow, and 50/50 PV, cold on our side of the globe. Looks to hang around. I know the Pacific is not the greatest, we need better ridging on the west coast, not the midwest, but still. You think we need the -EPO for better cold delivery to come back? That's the only thing that's missing IMO.
Without the Pacific all the NAO will do is block up mild air. Not sure about the EPO as it's hard to get a -NAO and -EPO. But a +PNA on the west coast would be a must.
 
Phasing can either help or hurt. It depends on where the phase happens. The 1993 storm we were playing around with yesterday phased too far west to help us farther east. We got mostly rain. The December 2000 martha focker storm phased too far east, and we got missed. In this case, we don't have any sort of an antecedent cold air mass in place. So a southern stream wave moving west to east by itself is not going to be enough. So, we need a northern stream vort to phase with the southern stream energy. That would cool the column just enough to support snow over the upper SE. If that doesn't happen, the way it looks now, we are all rain. And it needs to happen not too far north or west, or we rain.

Some of you got missed...some of us not so much..... ;)

The current pattern could pay off if it holds up, you figure 1 in 5 chances pays off so eventually one of these storms will be far enough east to pay out...I am hoping about 150-200 miles off Hatteras :cool:
 
this that type of pattern where if things go right, you could get a nice big dog, especially if phasing occurs, easily get amped up storms with that -NAO, just the problem like always in the SE is cold, but we have days to figure that out
 
People are freaking out over a pattern like this?

Lol ok.

Most of us would kill to see this pattern coming knocking at our doorstep around Christmas. A pretty classic Miller A pattern is being shown here verbatim.

View attachment 27967

Yeah all it takes is one little wave sneaking in and popping off at the right time for there to be a lot of win here....honestly I hate the storms that the models have for days and days in the 5-10 day range they always seem to trend away after several big dog runs etc....its those little sneaky ones the models are late to pick up that pay off at least it seems that way to me....also less stress with only 3-4 days worth of runs to fret over...
 
The CMC is better, it's just north. We need that energy to phase further south, so the low needs to be around TX or LA
gem_mslp_pcpn_frzn_us_33.png
gem_z500a_us_30.png

\
 
People are freaking out over a pattern like this?

Lol ok.

Most of us would kill to see this pattern coming knocking at our doorstep around Christmas. A pretty classic Miller A pattern is being shown here verbatim.

View attachment 27967

But that's assuming the GEFS way out at the unreliable hour 312 is even close to being right. Look at the major changes that occurred much earlier in the run. That in itself makes this 312 hour map even less reliable than normal.
 
But that's assuming the GEFS way out at the unreliable hour 312 is even close to being right. Look at the major changes that occurred much earlier in the run. That in itself makes this 312 hour map even less reliable than normal.
Like the EPS has been faring any better inside day 10-12...
 
Back
Top