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January 2016 Disco/Obs: A New Year, A New Pattern


Rjay

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Crazy at mY house. New tripod with 5 foot pole with whole station at top with a fars. No wind,temps are about 26.0℉

Metal probe sensor ground level, 16.0℉

About 15 feet different in height.

Nice you just answered the question about how shallow the cold is at west Hampton. Obviously very very very shallow!!!

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Park up to 29, reducing the daily departure.

29 plus 11 is 40. The mean is 20. Which is still - 13 The N mean is 33.

The 13.5 would not have been seen in the departure until it got adjusted at months end.

Don't worry. I think the CFS plus 8 and the calls of plus 4 don't happen

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Using 29° as the day's high temperature, the month-to-date departure is 1.4° below normal. It will go positive in coming days, but it won't become so positive that a sustained period of cold couldn't erase the positive departures.

Agree Don ,

after 6 you're B. After 10 you're A. After 20 you're

Back B.

Just not sure if those back 10 .

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Agree Don ,

after 6 you're B. After 10 you're A. After 20 you're

Back B.

Just not sure if those back 10 .

I'm not very certain about the final 7-10 days of the month. In AmWx's monthly guesses, I hedged climo for that timeframe leading to only a very small negative departure for NYC for the month. If blocking is sustained, then I think a colder outcome will prevail, even if there is a temporary relaxation of the pattern.

 

Right now, if it is to be sustained, blocking will probably depend much more on the troposphere than the stratosphere for the time being. Despite the forecast development of another large wave impact in the near-term, even as the geopotential amplitude of that wave is more impressive than the most recent one, the temperature amplitude is forecast to be less impressive. Hence, unless things change, I don't see much change overall in stratospheric conditions making it more likely than not that even as the polar vortex might remain split at 500 mb (and that isn't assured), the stratospheric polar vortex will probably remain intact beyond mid-month and perhaps longer. The ECMWF's forecast temperature anomalies for 10 hPa and 30 hPa seem to bear out a generally colder than normal stratosphere. The usual caveats about the limited understanding of complex stratosphere-troposphere interactions applies, as always, so anything concerning the stratosphere is not a high confidence proposition in the extended range. 

 

Strat01052015.jpg

 

An SSW event would be a wildcard. However, such events can't be forecast reliably from more than a few days out, so I make no assumptions on that front. Nothing is shown on the guidance right now. Moreover, numerous winters experience none.

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Talk about a crazy variability tonight!

.NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...

DEEP LAYERED RIDGE AXIS EXITS TO THE EAST OVERNIGHT...WITH ZONAL

FLOW SETTING UP OVER THE REGION. ABSENT ANY FORCING STILL EXPECT A

CLEAR SKY OVER THE REGION. VERY RELAXED PRESSURE GRADIENT WILL

PRODUCE LIGHT TO CALM WINDS...SO EXPECT EXCELLENT RADIATIONAL

COOLING OUTSIDE OF URBAN AREAS. TEMPERATURES FALLING OFF FASTER

THAN EXPECTED OVER NORMAL COLD SPOTS...AND NOT QUITE AS QUICKLY AS

FORECAST OVER URBAN AREAS. HAVE ADJUSTED LOWS TO REFLECT LATEST

TRENDS IN GUIDANCE...LOWERING OVER COLD SPOTS AND RAISING SLIGHTLY

OVER URBAN AREAS.

LOWS SHOULD BE MAINLY FROM 10-20 ACROSS COASTAL/URBAN AREAS - A

TAD WARMER IN NYC PROPER AND UP TO AROUND 10 DEGREES COLDER IN THE

PINE BARRENS - AND MAINLY IN THE SINGLE DIGITS ELSEWHERE.

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Agreed next week is below normal but not close to today

 

Yeah, you can see that the PV on the more recent EPS runs isn't forecast to drop as far SE as it was a few days ago. It may be related to the storm over the weekend cutting further west than the hugger track the models

were showing a few days ago. So the PV doesn't get pulled as far SE.

 

New run

 

 

Old run

 

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Yeah, you can see that the PV on the more recent EPS runs isn't forecast to drop as far SE as it was a few days ago. It may be related to the storm over the weekend cutting further west than the hugger track the models

were showing a few days ago. So the PV doesn't get pulled as far SE.

New run

ecmwf-ens_z500a_namer_8.png

Old run

OLD.png

Wouldn't that help our storm chances? As there is less of a chance for suppression?

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Wouldn't that help our storm chances? As there is less of a chance for suppression?

 

It looks like the stronger storm further west actually pumps the downstream -AO/-NAO ridge more than the old storm track.

So the models are going deeper with the-AO/-NAO than just a few days ago. It may allow a clipper to track closer to our region

next week instead of getting suppressed to our south . After that, we'll have to see how far north the STJ disturbances

get.

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Running out of 1998 allies ? 

 

 

Even the once Jan and Feb torched  CFS is starting to see " something" other than a torch in the L/R . Gone is the ridge for week 4 .

 

So it now sees a trough in East  week 2 and week 3 ( Which is in line with the Euro )  and one in the SE in week 4 . ( Which is in line with the weeklies ) .  Also it is now cooling in Feb . Here are the average of it`s last 30 day runs vs today`s .

 

Very NON 1998. 

wk1.wk2_20160105.z500.gif

 

 

wk3.wk4_20160105.z500.gif

post-7472-0-77868200-1452082911_thumb.pn

post-7472-0-31593700-1452082916_thumb.pn

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We can post what seasonal models show until there's a blue moon and pigs are flying. What matters is real time verification. Forecasts are not verified by posting seasonal, monthly or weekly model runs that show your forecast. We will see very soon who's right and who's wrong

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We can post what seasonal models show until there's a blue moon and pigs are flying. What matters is real time verification. Forecasts are not verified by posting seasonal, monthly or weekly model runs that show your forecast. We will see very soon who's right and who's wrong

More time ?

Verifications since July ,

Basin wide Nino . You opposed and argued east based NINO all summer .

Record R 4 . You said 1.2 would boil

- EPO . J - M You said that warm water would get erased .

D/L forcing . J-M You said it would not matter , the NINO would overwhelm

AN Nov/Dec - I AM SURE YOU LOVED THIS - BECAUSE IT WAS A WARM FORECAST

Verifications since mid/late Dec .

Pattern flip Jan 1 You said no pattern flip until Feb

Jan 1 - 6 BN . Not sure what your opinion was here , but I guess I know

Next calls - Next 3 days are AN followed by BN Jan 11 - 18 .

Feb will go the way of the Euro seasonal , cough cough I mean the CFS .

vs East based and 1998 winter time snowless/torch . I just don`t get arguing in the face of all the guidance . It does not make any sense .

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We can post what seasonal models show until there's a blue moon and pigs are flying. What matters is real time verification. Forecasts are not verified by posting seasonal, monthly or weekly model runs that show your forecast. We will see very soon who's right and who's wrong

We already beat the lowest winter temp during a super Nino by a good amount. Run of the mill super Nino this is not
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Models moving to one of the strongest -AO drops of the last few years.

If it can drop to -4.000 or lower, then this would be the first time since March 2013.

October 2013 got really close.

 

attachicon.gifao.sprd2.jpg

 

attachicon.gifB.jpg

 

attachicon.gifeps_ao_00.png

most of the winter seasons that had a -4 ao at early or late had a major storm or zero degree temperatures...1998 was one exception with a -4 ao in January and no cold or snow...the lowest ao for the last six years...the last two didn't get below -3......

2009-10......-5.821.....12/21/09...11" snow 12/19-20....16 degrees 12/18 is the coldest for the month...

2010-11......-5.172.....12/18/10...20" of snow 12/26-27...23 max on 12/14..

2011-12......-3.451.....01/28/12...4.3" of snow 1/21...Biggest of the season...

2012-13......-5.688.....03/20/13...3.0" of snow 3/18 and continued cold...

2013-14......-2.605.....01/27/14...5 degrees 1/22...11" of snow 1/21...21 max 1/28...

2014-15......-1.462.....03/19/15...4.5" of snow March 20th...

.........................................................................................................................

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January 1966 [strong nino] featured the AO bottoming out around -5 standard deviations, and January 1958 [strong nino] reached a minimum of around -4 SD. Both were good analogs for this winter (1958 much more so than 1966). If the pattern progresses as expected, we will maintain high latitude blocking in the means for the remainder of winter.

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More time ?

Verifications since July ,

Basin wide Nino . You opposed and argued east based NINO all summer .

Record R 4 . You said 1.2 would boil

- EPO . J - M You said that warm water would get erased .

D/L forcing . J-M You said it would not matter , the NINO would overwhelm

AN Nov/Dec - I AM SURE YOU LOVED THIS - BECAUSE IT WAS A WARM FORECAST

Verifications since mid/late Dec .

Pattern flip Jan 1 You said no pattern flip until Feb

Jan 1 - 6 BN . Not sure what your opinion was here , but I guess I know

Next calls - Next 3 days are AN followed by BN Jan 11 - 18 .

Feb will go the way of the Euro seasonal , cough cough I mean the CFS .

vs East based and 1998 winter time snowless/torch . I just don`t get arguing in the face of all the guidance . It does not make any sense .

Silliness. Are we out of the epic December torch pattern? Duh. I never said we weren't. Are we in a sustained long term cold and snow pattern? Nope
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