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Mid January Discussion


earthlight

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dude, not rare at all. Its a NE wind off the sound. We had winter stroms in the past where a NE wind off the sound would make LGA warmer than everyone else, including JFK.

11 degree spread over such a short distance in the winter is impressive, nothing impresses you eh?

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Ugly vortex over AK with transient ridging to our NE.

Yeah we def. aren't getting the PNA spike at the right time. That would be my concern with this system. It's hard to explain but when you loop through the 500mb height field on the guidance you can see it. The ridge on the west coast allows the pattern to buckle enough to get the mean trough towards the Central and Eastern US -- so that is a success. But it's so short lived, that by the time things get going..it is collapsing and the trough is able to kick east. You can compare the two images below to see it.

http://www.meteo.psu.edu/~gadomski/AVN_12z/f120.gif

http://www.meteo.psu.edu/~gadomski/AVN_12z/f150.gif

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Bloody Brilliant trough.

It is nice and would likely bring a nice shot of arctic air. But check out the individual ensembles -- none of them are remotely interesting. The first shortwave (the cutoff that ejects east) swings through just ahead of the "big" trough amplification...so it sweeps the baroclinic zone offshore...and we get nothing.

http://www.meteo.psu.edu/~gadomski/ENSPRSNE_12z/ensprsloopmref.html

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It is nice and would likely bring a nice shot of arctic air. But check out the individual ensembles -- none of them are remotely interesting. The first shortwave (the cutoff that ejects east) swings through just ahead of the "big" trough amplification...so it sweeps the baroclinic zone offshore...and we get nothing.

http://www.meteo.psu...rsloopmref.html

The canadian is in the phase camp - and the Euro isnt far behind .

Cold and dry is as possible as the phase scenerio . I dont bite yet either

but im goin to sleep on this one yet

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The canadian is in the phase camp - and the Euro isnt far behind .

Cold and dry is as possible as the phase scenerio . I dont bite yet either

but im goin to sleep on this one yet

The vast majority of the GEFS individual members look closer to the Canadian and other amplified models at 126 hours. It wouldn't surprise me to see the operational go that way as well. Unfortunately the cold air source stinks...the guidance lost the piece of confluence which they were keying in on yesterday. The way it is now, it's generally cold and dry...or warm and wet. If the storm comes back close to the coast, we'll likely be dealing with a cold rain away from the elevations..unless something changes in the upper air pattern.

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The vast majority of the GEFS individual members look closer to the Canadian and other amplified models at 126 hours. It wouldn't surprise me to see the operational go that way as well. Unfortunately the cold air source stinks...the guidance lost the piece of confluence which they were keying in on yesterday. The way it is now, it's generally cold and dry...or warm and wet. If the storm comes back close to the coast, we'll likely be dealing with a cold rain away from the elevations..unless something changes in the upper air pattern.

hurtful but true .

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Its not impressive at all, its just a local sea breeze. That spread can be 30 degrees in the Spring with 35 mph winds at JFK, now thats impressive.

Yeah. I dont see the big deal either. I have seen LGA at 85 degrees and JFk at 60 degrees in late spring.

In the summer also, we have seen LGA at 90 and JFK at 70 almost every year.

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Yeah. I dont see the big deal either. I have seen LGA at 85 degrees and JFk at 60 degrees in late spring.

In the summer also, we have seen LGA at 90 and JFK at 70 almost every year.

We also see the opposite in some storms with a strong NE wind, the early march storm from a few years ago is an example of that.

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There are 7 snowstorms or snow to rain storms out of the 12 GEFs members in the day 4-5 period. A few are moderate to heavy QPF events. Yes the airmass is marginal and the mid/upper levels less than ideal, but it makes for something interesting to track at least. Late January is the best time for marginal airmasses anyway.

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these vorts exist in the nomad regions of the world or over the pacific. The amount, timing, and strength will continue to change for days. I have a feeling we see the first vort trend weaker (the system anthony loves that is a rainer) and the second system, the northern stream system trends stronger.

In fact, the wave exists on the euro around 150 hours but gets its butt kicked and its ripped apart as it traverses the country.

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Temps soaring, 48/48 in the park, 50/48 in Newark.

The 48 dwpt is also the highest the park has seen this month. We'll probably break 50 there. The highest dew last year in Jan was 48.

And how 'bout that cold wedge? DCA is still at 37.

Atlanta gets some crazy cold wedges down the apps...there were times it was raining in ny, but the cold wedge kept it below freezing in the atlanta area and allowed for freezing rain, was pretty cool to see

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Temps soaring, 48/48 in the park, 50/48 in Newark.

The 48 dwpt is also the highest the park has seen this month. We'll probably break 50 there. The highest dew last year in Jan was 48.

And how 'bout that cold wedge? DCA is still at 37.

still 36 here in north jersey

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