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November 2011 Obs/Forecasting Discussion


WxUSAF

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Well, the good news about the 12z GFS is the pattern is pretty fluid and we never really warm up significantly. Bad news is the NAO stays near neutral, PNA stays negative to occasionally neutral, SE ridge hangs around (although is definitely not dominant), and no clear sign of a big pattern change.

Ensembles seem to be saying "more of the same" with a strongly -PNA, moderate -NAO, and moderate SE ridge for pretty much the entire run.

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Well, the good news about the 12z GFS is the pattern is pretty fluid and we never really warm up significantly. Bad news is the NAO stays near neutral, PNA stays negative to occasionally neutral, SE ridge hangs around (although is definitely not dominant), and no clear sign of a big pattern change.

Ensembles seem to be saying "more of the same" with a strongly -PNA, moderate -NAO, and moderate SE ridge for pretty much the entire run.

someone in the NE thread said JB pulled out maps today and was discussing 01/02

how can he expect to maintain his credibility mentioning that year after forecasting a cold winter, with a warm up in FEB?

I think he's hugging the CFS for some unknown reason

it's simply too early to worry about

OCT snows are evil, they will fook up your mind

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Yea, this is the big final drop day for most trees.

Totally cool leaftadoes spinning on my street with some of the big gusts. One more day in the yard in the next week or so and that's all she wrote till April.

I still have 3 maples hanging on to about half even after today's winds. Still plenty of raking to do, tho.

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I tell you what ... after reviewing the D8 and 9... It wouldn't take a whole heck of a lot of fiddling with that larger scale synopsis and there'd be a hell to pay cold invasion for just about everyone N of an MV-MA line...

That's the strongest yet -EPO signature, and then factoring in the old ECMWF "dig the trough too far SW" bias (does that still apply??), and viola... The dailies get smart and a lot of people end up surprised.

We'll see.

msl_uv850_z500!Geopotential%20500%20hPa%20and%20Temperature%20at%20850%20hPa!192!North%20America!pop!od!oper!public_plots!2011111112!!chart.gif

LMAO, at TIP. this is one of the worst looking patterns possibe. All we need if for the troff to come 3,000 miles east.

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This is a pretty silly statement. They aren't that great at the end of their run, but they definitely have skill.

If a regularly-run model didn't have at least some skill, it probably wouldn't be running (especially at the level of something like the Euro). Just because a model has some skill doesn't mean you have to use any of its output. I forecast with the assumption that whatever the weeklies have past week one is probably going to be wrong... it works more often than not.

He's just trying to make his it's going to get cold at D+10 that he made 7 days ago look less silly. whistle.gif

Verification is objective, and I admit to being wrong. Can't win 'em all.

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The pattern looks pretty bad through the month. A raging EPO, a trough in the west and ridge over the southeast, ugh, The supposed negative nao on the progs is pretty misleading.

I feel like this cold blast coming next week is pretty impressive. The source region is clearly Siberian and these temps are going to be cold, despite what the MOS says next Thursday-Friday. I wonder if we'll see some flakes before we warm back up.

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I feel like this cold blast coming next week is pretty impressive. The source region is clearly Siberian and these temps are going to be cold, despite what the MOS says next Thursday-Friday. I wonder if we'll see some flakes before we warm back up.

Hey HM havent seen you on here in quite a while, what are your thoughts for the patter change, originally most were thinking later november, now most are thinking mid december?

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This is a pretty silly statement. They aren't that great at the end of their run, but they definitely have skill.

Not that I'm qualified to speak, but I do follow the weekies and have noticed they don't seem to pick out pattern changes well after week2. I don't know if this is fact or incorrect observation on my part, but I cannot ever recall the week3 or week4 progs correctly doing so.

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Not that I'm qualified to speak, but I do follow the weekies and have noticed they don't seem to pick out pattern changes well after week2. I don't know if this is fact or incorrect observation on my part, but I cannot ever recall the week3 or week4 progs correctly doing so.

skill and "past d 7" are not words you can believe too much together in general

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Not that I'm qualified to speak, but I do follow the weekies and have noticed they don't seem to pick out pattern changes well after week2. I don't know if this is fact or incorrect observation on my part, but I cannot ever recall the week3 or week4 progs correctly doing so.

Their skill diminishes the further you go out in time like any model, but they have done just fine in the past at that time range....last winter they were very good at identifying the record blocking in December a few weeks out. It certainly doesn't mean they are going to be right this time. But at this point, I don't exactly see a reason that is screaming that they are off their rocker for early December. Hopefully they are wrong about the big positive EPO.

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