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December Med/Long Range Disco


WinterWxLuvr

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Is it possible for two models to be further apart for Christmas Day than the Euro and GFS are?

 

It is 10 days out, so there is that to consider.

The progression isn't that much different the GFS is just faster.. and the Euro puts the highest anomalies over our region as opposed to NE. 

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The progression isn't that much different the GFS is just faster.. and the Euro puts the highest anomalies over our region as opposed to NE. 

Not sure about that.  If you start at 1 week out, they look pretty much in line.  Then they diverge quite a bit.  By day 10, seems to me the patterns over NA are quite different.  I don't think you can extrapolate the Euro out a day or two and get what the GFS is showing.

 

Of course, both seem to be terrible, so it's a moot point.

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I expected a pretty bad December but this is a little overboard.  The 2 things that worry me most for long term prospects for a better second half are the total consistency of this pattern and the failure of the last two attempts to break it down.  I thought that within this pattern there would at least be some variability and perhaps a fluke storm or two that at least gave snow to the mountains to our west.  Not only has this pattern been locked in totally but the last two tries at some kind of pattern shift were totally bullied off by the eastern ridge.  Back in late November an EPO drop attempted to shift the trough east for a time but all we could get from that was a few days of seasonal then the torch reloaded.  Now this week the SOI drop and the NAO are attempting to shift things a bit but the ability of any cold to penetrate into the east is again being muted to just a day or two of seasonal chill then right back into the furnace.  That indicates to me that breaking this down is not going to be easy at all...and that there is a really dominant force locking this in.  If that is the nino then perhaps it will shift as it collapses but I am not sold the nino is the driving factor right now.  Perhaps the unusual warmth around the nino is muting the SOI response a bit, but the soi is not acting like a record breaking nino right now at all.  I would feel much better if we were in a typical nino pattern with a strong STJ and it was just too warm for snow.  I think if we get an STJ flare up that lasts long enough it will shift the pattern in our favor as enough storms going to our south will tend to lower heights over the east and allow cold to bleed down from eastern Canada.  But without that I am not sure this pattern doesn't just linger. 

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I wonder what that map looked like in March 2012.  That's my benchmark for crazy.

yeah that came up on twitter too.  i found a couple maps tho perhaps not peak:

 

https://twitter.com/islivingston/status/676852789507694592

 

plus this:

https://twitter.com/MDA_Weather/status/676853944560263169

https://twitter.com/MDA_Weather/status/676852992965025792

 

12z euro ens mean has +20s for 5 days in a row for us and a huge area around. +15s for a week. 

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yeah that came up on twitter too.  i found a couple maps tho perhaps not peak:

 

https://twitter.com/islivingston/status/676852789507694592

 

plus this:

https://twitter.com/MDA_Weather/status/676853944560263169

https://twitter.com/MDA_Weather/status/676852992965025792

 

12z euro ens mean has +20s for 5 days in a row for us and a huge area around. +15s for a week. 

is there any light at the tunnel on euro eps? day 15 something?

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is there any light at the tunnel on euro eps? day 15 something?

Weeklies, perhaps, but that's in fantasy land.

 

The EPS is the *gulp* Ridiculously Resilient Ridge over the North East. So no, it looks unmistakably the worst. If this doesn't change in a hurry every forecast that shows negative temperature departure for anyone east of Texas is huge trouble.

 

The model consensus is disturbing through NYE.

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I wonder what that map looked like in March 2012.  That's my benchmark for crazy.

 

March 2012 was definitely out there crazy.  I saved an e-mail from a colleague that showed a record report out of Marquette, MI for March 21, 2012.  They had a max/min of 81/52.  The max topped the previous record high by an incredible 32 degrees (old record was 49), and even their low temperature for that day topped the previous max record by 3 degrees!  The departures from normal were +45/+36/+41 (for max/min/mean).  Around here, the cherry trees were in full bloom by St. Pat's Day.

 

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If you toggle hr348 from 12z and 360 from 0z the ridge signal is weaker and cooler 850's push into the far NE. So it's like a hair less awful at best.

Ahh nice. I always miss the 0z. :P

And yes they have done quite well tho prob partly pattern stability. We do need a southern jet kick in the pants, stat.

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