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January 2020 Mid/Long Term Discussion


nj2va
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6 hours ago, Amped said:

Appears to be rather transient though. Not liking the Pac look overall.  Going to be an warm period for the foreseeable future.

Despite the 00z gefs clocking in with probably a neutral epo that is a cold look in the extended. Neg temp anomalies it is currently depicting are probably even understated. 

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Just now, showmethesnow said:

Not hating the look the gefs is now throwing at us in the extended. Definitely a workable pattern as long as we stay on the right side of the boundary that will set up with that ridging in the se.

Agreed.  And Merry Xmas eve sir.  Make the casino pay you today!

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24 minutes ago, showmethesnow said:

Not hating the look the gefs is now throwing at us in the extended. Definitely a workable pattern as long as we stay on the right side of the boundary that will set up with that ridging in the se.

First week of Jan continues to look active on the GEFS with some cold around. As depicted it could be an interesting period. Fwiw, the snow means the past few runs have looked decent for the window beginning around Jan 3. Given the GFS propensity for overdoing cold in the LR,  not getting overly excited about it yet, and the EPS isn't as enthusiastic.

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19 minutes ago, BristowWx said:

Agreed.  And Merry Xmas eve sir.  Make the casino pay you today!

Know this is banter but what the hey. Merry Christmas to you as well.

  I am at the rocky gap casino in western md and it is freaking great. Slots have been paying out great. Casino is clean, hotel is very nice and the food is good. Already decided I will make this my destination if we can get a good weekend snowstorm this winter. 

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18 minutes ago, Wonderdog said:

Any love on the EURO in the extended  

Here is h5 for the first week of Jan from the 0z EPS run. I've seen better lol.

0z GEFS has a bit more ridging out west and normal h5 heights for the east coast for the same period, with lower height anomalies just to the NW over the GLs. Overall colder look.

1578441600-wiQZoIVhWQs.png

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Was waiting on this update, released today by http://www.bom.gov.au/climate/enso/#tabs=Overview

I am not an expert on this topic but I am surprised we have gone from 2.2 C. in mid-October to +0.6 C. as of December 24, 2019. Even further weakening is expected according to the various climate models. The + IOD threshold is  +0.4 C. Now the question is how soon will the atmosphere react,  so we can revert to a more conducive and assertive Pac forcing regime,  not all of these weak, multiple areas of convection that continues to throw off the various MJO models.  

New release-  issued December 24, 2019

Positive Indian Ocean Dipole weakens: 

The positive Indian Ocean Dipole (IOD) continues to weaken, while the El Niño–Southern Oscillation (ENSO) remains neutral.

The IOD value has fallen from a peak of +2.2 °C in mid-October, to the latest weekly value of +0.6 °C. Warmer than average waters persist near the Horn of Africa, but waters in the eastern Indian Ocean are now near-average. While the index is still above the positive IOD threshold of +0.4 °C, most international climate models surveyed by the Bureau indicate the positive IOD will dissipate in January. The rate of current weakening would suggest a return to neutral is likely by early January.

Positive IOD events in spring (as happened this year) are often associated with a more severe fire season for southeast Australia in the summer months.

In the tropical Pacific Ocean, while most indicators of the El Niño–Southern Oscillation are neutral, warmer than average sea surface temperatures in the far western tropical Pacific may be contributing to some changes in local weather patterns over the region. International climate models forecast ENSO-neutral until at least autumn 2020. When ENSO is neutral, it has limited influence on Australian and global climate.

 

ENSO Monitoring Graph

 

 

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This is a 7 day mean for the first week of Jan...A notable feature throughout the GFS and the GEFS is the trough east of HI.  Maybe this could send periodic shots of a west coast ridge even while the HLs are extremely hostile.  With the active flow and cold very nearby maybe we can get something to dig under us at the right time.  Hints of this on today's runs.  

3Vfa0WT.png

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50 minutes ago, poolz1 said:

This is a 7 day mean for the first week of Jan...A notable feature throughout the GFS and the GEFS is the trough east of HI.  Maybe this could send periodic shots of a west coast ridge even while the HLs are extremely hostile.  With the active flow and cold very nearby maybe we can get something to dig under us at the right time.  Hints of this on today's runs.  

Also of note, SE Canada maintains snow depth and the fantasy land GEFS does have a somewhat colder look for us originating from the extreme cold air mass pooling near Alaska and the NW territories and then SE towards the Tennessee Valley,  NE and the Northern Mid Atlantic.  

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EPS is looking much better down the line (not the same as looking good. Lol). Especially in the Atl. Also moves the tpv out of AK fairly quickly and is building an -epo ridge. Mid level temps are looking cold by d15 so some of the arctic air in AK is getting displaced into the mid latitudes. All in all I'll take the 12z eps run as a Christmas present. 

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38 minutes ago, Bob Chill said:

EPS is looking much better down the line (not the same as looking good. Lol). Especially in the Atl. Also moves the tpv out of AK fairly quickly and is building an -epo ridge. Mid level temps are looking cold by d15 so some of the arctic air in AK is getting displaced into the mid latitudes. All in all I'll take the 12z eps run as a Christmas present. 

yea i noticed d11-15...850 temps are pretty well below normal for us and a large part of the country

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47 minutes ago, Ji said:

yea i noticed d11-15...850 temps are pretty well below normal for us and a large part of the country

I believe models are converging on an unusual epac ridge axis that puts western canada into the deep freeze as the ridge axis runs along the coast. It's a weird pattern in general but hey, get canada into the deep freeze without a SE ridge and we'll get some cold. Get enough cold and it should accidentally snow

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1 hour ago, Bob Chill said:

I believe models are converging on an unusual epac ridge axis that puts western canada into the deep freeze as the ridge axis runs along the coast. It's a weird pattern in general but hey, get canada into the deep freeze without a SE ridge and we'll get some cold. Get enough cold and it should accidentally snow

I’m convinced nearly all of our snow is accidental.  So this fits the MA winter

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