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December warm NOT White


PB GFI

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How much can we chalk up these anomalous temps to El Nino? The impacts this November and December have not exactly fit the typical El Nino pattern. Little precip south of San Francisco and pretty much everyone east of the Mississippi is torching right now, not just the Midwest. It's also been pretty dry and not very stormy on the East Coast. As some have noted, the pattern right now resembles the winter of 2011-2012, which was a La Nina year. I'm not an expert on El Nino/La Nina, so I'm just wondering.

 

Yeah the El Nino has helped probably but this is more than just the El Nino, this is everything possible going wrong.  The AO/NAO are also unusually positive for an El Nino and more resemble a  La Nina where there is more frequently no blocking.

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6z GFS has the 540 dm line south of the city for the entirety of January 1-8.

The NAEFS is only below 5400 from  12/31---01/04.   None of the next 5 CFS weeklies looks below normal here or anywhere nearby.   The month still figures to be +3 to +5.

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This warm front looks like the most impressive that we have seen in late December

with temperatures forecast to rise tonight into tomorrow. NYC just needs to rise

above 71 to set the new record daily high for late December set on 12/22/13.

It's remarkable that we could get close to the all time December record high 

of 75 set in 1998. That record occurred on December 7th when the daily

means are higher than the 24th. The monthly minimum of 61 is also in play

set on 12/22/13.

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This warm front looks like the most impressive that we have seen in late December

with temperatures forecast to rise tonight into tomorrow. NYC just needs to rise

above 71 to set the new record daily high for late December set on 12/22/13.

It's remarkable that we could get close to the all time December record high

of 75 set in 1998. That record occurred on December 7th when the daily

means are higher than the 24th. The monthly minimum of 61 is also in play

set on 12/22/13.

How about the fact that there's another big warm shot a couple days after Xmas where we may get very close to 70F again before the extreme anomalies finally start to settle down.

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How about the fact that there's another big warm shot a couple days after Xmas where we may get very close to 70F again before the extreme anomalies finally start to settle down.

 

The GEFS +18 to +20 over the next week should boost the monthly departure to even more ridiculous levels.

 

 

 

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How about the fact that there's another big warm shot a couple days after Xmas where we may get very close to 70F again before the extreme anomalies finally start to settle down.

 

 

The GEFS +18-20 over the next week should boost the monthly departure to even more ridiculous levels.

I'm thinking +15 for the month is not out of question.  No model or forecast had that degree of warmth.  Maybe January will only be +10.

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More records today...

 

Today is the 20th day on which the high temperature has reached 50° or above in December. The old record was 19, which was set in 1891. Today's low temperature of 52° makes today the 9th day on which low temperature was 50° or above. The old record was 5, which was set in 1982 and tied in 1998.

 

To put things into perspective, even if the remainder of the month finished normal (and it won't), the monthly mean temperature would be 46.5°. The current monthly record is 44.1° (2001)

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The GEFS +18 to +20 over the next week should boost the monthly departure to even more ridiculous levels.

 

attachicon.gifM7D7.gif

the blocking is in the wrong place...It's blocking the cold air from getting here...the ao is at a ridicules high level...the forecast is ridicules also because the members are all over the place...so far this winter the high members are winning and there is no reason to think they will be wrong until I see all members dive...even then I'll believe it when it happens...

post-343-0-03170000-1450880559_thumb.gif

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Can we start discussing the Mon-Tue storm on this thread? GFS has gotten colder and many of us might actually see our first winter snowflakes. It could also end the possibility of a snowless December.

Verbatim that would start as snow even at the coast places like NYC would be measurable for sure even if only for 1-2 hours in that setup. The high is in a really good spot. The Op Euro at 00z continues to be more west with the storm entirely even down in OK where the GFS shows OKC getting a blizzard but the EURO is more west. As of now I favor the more progressive track of the storm because of the energy crashing into the west coast. I don't think this will be able to cut due north into the Midwest.

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12z GFS run now has 540dm line south of the city from 12/31-12/8 end of run.

Pattern change. Not flip.

One positive sign too is the GFS continues to try and go zonal Day 14-16 on the Op runs and some ensemble members the last 2 days but as soon as that same period gets inside Day 12 it goes back to the more +PNA

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12z EURO is a good deal colder with the HP in Canada about 4-6mb stronger and in a much better position as well. System also ejects quicker which allows the area to pick up about an inch or so. 

 

Even NYC gets an inch or so with CT seeing 2-5" 

Does it change over to rain?

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