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January 2018 Discussions & Observations Thread


Rtd208

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40 minutes ago, bluewave said:

The big weather swings and extremes continue. This is currently the strongest SE ridge or WAR on record for the month of January on the OKX sounding.

 

5a58aada4dece_Screenshot2018-01-12at7_27_53AM.png.1609781f4be98476ddaca3a950545c69.png

eps_z500a_eastcoastus_0.thumb.png.35eb74b00bbb642f5b561156cb46a043.png

Good observation.  With some colder air trapped near surface and no sun, even the fact that 850mb. T's are near a record too at 10C, the 2M is not going to record levels of 70degs.  

I would not even think of checking for these numbers while stuck here in a dense fog at a variable T of 48-52.

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12 minutes ago, CIK62 said:

Good observation.  With some colder air trapped near surface and no sun, even the fact that 850mb. T's are near a record too at 10C, the 2M is not going to record levels of 70degs.  

I would not even think of checking for these numbers while stuck here in a dense fog at a variable T of 48-52.

Stations around the area are already near 60 degrees with clouds, rain, and fog. If we had something resembling full sun today, then we would have made a run on 70 degrees. That Jan 07 record of 72 degrees in NYC would have been in play especially if we were starting with bare ground instead of melting snow pack.

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1 minute ago, bluewave said:

Stations around the area are already near 60 degrees with clouds, rain, and fog. If we had something resembling full sun today, then we would have made a run on 70 degrees.

More impressive is how far North the warm air is stretching. Typically these get hung up near SNE, however Albany and Boston should both reach lower 60's.

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1 minute ago, bluewave said:

Stations around the area are already near 60 degrees with clouds, rain, and fog. If we had something resembling full sun today, then we would have made a run on 70 degrees.

Well since we've hit 70 in the entire month of January maybe three times? in 150 years, Thank God there's no sun. Those are records I'd rather not break.

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3 minutes ago, NJwx85 said:

More impressive is how far North the warm air is stretching. Typically these get hung up near SNE, however Albany and Boston should both reach lower 60's.

60+ degree temperature swing since last weekend when were near or below 0 in spots.

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there is likely to be a january and potential meteorological winter record pwat at okx at 00z, as long as convection doesn't interfere with the balloon launch.  mhx set their january record pwat at 12z - 1.77".  the january record at okx is 1.59" and the dec-feb record is 1.66" on dec 12 as shown below.  most guidance peaks at 1.65-1.70" today/tonight.

5a58c2b339d8a_ScreenShot2018-01-12at9_12_35AM.thumb.png.0978163637e0ee87701217f5cee9f98c.png 

the upper low east of florida got squashed by that monster ridge, but numerous vorts have shot out of it and are headed our way this afternoon in collocation with that moisture plume njwx85 showed.  radar imagery from eastern va to nc shows several of these circulations.  there will almost certainly be tropical downpours this afternoon and evening throughout the tri-state...city included. instability has two maxima - one this afternoon/evening and a more impressive one in the pre-dawn hours of saturday. i think that's the best shot for lightning, tho the risk is non-zero ~2-7PM.

 

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45 minutes ago, NJwx85 said:

Amazing abundance of deep moisture surging Northward from the Caribbean

tran_sf.gif?1515765813912

In addition to the record level PWAT's, the January dewpoint record at OKX is 58 degrees. Probably closer to 60 at EWR. The record tropical moisture feed is coming around the record ridge to our east. So very heavy downpour potential combined with the snowmelt will raise the flood risk.

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This extreme to record warmth around the 2nd week of January has become a thing here since 2012. Pretty impressive continuation of the pattern this year considering the 2nd coldest first week of January on record.

Newark high temperatures:

1-12-18....62 so far

1-12-17....67R

1-13-17....61

1-10-16....65R

1-11-14...61

1-14-13..58

1-7-12...64R

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3 minutes ago, hudsonvalley21 said:

The Delaware River could have some ice jam issues later.

I was wondering about that but haven't had time to look into it with this system.  I know ice jams have done some serious damage in the Port Jervis area in the past.

http://www.nytimes.com/1981/02/13/nyregion/delaware-floods-port-jervis-area-and-3000-flee.html

 

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