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1/18 - 1/19 Potential Coastal Storm


NEG NAO

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http://www.hpc.ncep.noaa.gov/medr/nav_conus_pmsl.php?fday=4&fcolor=wbg

tip for the late night model huggers

-trade secret-

The WPC has viewed the 0Z suite of models (GFS -Euro)

------ before this updated map was created

and represents what their (pro forecasters) team

feels is the best blend and trends from that guidance

all the layers not just the op runs..... surface reflections

do a spot check for yourself

and save yourself some sleep

dm

9khwbg_conus.gif

This is most likely a rain storm for most of the area. I don't think anyone would disagree with that. The NW folks should keep an eye out though.

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Nothing you posted provided a link to them stating they get access to a model 3 hours before it runs. Sorry, im not "trusting" you, this is a science forum, so post appropriately, with the information to back up your assertions, or dont post them at all.

What is 0Z UTC

 7:00pm EST 

yes???

 

the have the maps posted (issued)at 0254UTZ

three hours from the cycle start

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The sunday storm is probably rain for the coast . As John pointed out a day ago most of the precip falls in the warm sector and the surface is just too warm on the coastal plain.

Like most storms this year snow should be confined to our NW suburbs as they prob change over towards the end.

Be patient the one we want could b 8 days away.

Sunday would b hard to pull off . Anything can happen but snow is not modeled for the city east as of now so I am not expecting any

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The 12z GFS is a tick east of 06z and a tick colder, but most if not all of the precip falls in the warm sector. Now the Euro is pretty much by itself.

as soon as the precip arrives on the 12Z GFS ( the new improved update ???)the 540 line crashes towards the coast - precip get no further west then extreme eastern PA - this needs to be watched in future runs to see how much cold air can get wrapped up in this system in the metro - lets see if the Euro starts moving towards the majority of the guidance

 

http://www.tropicaltidbits.com/analysis/models/navm.html?model=gfs&region=us&pkg=mslp_pcpn_frzn&runtime=2015011512&fh=60&xpos=0&ypos=1100

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as soon as the precip arrives on the 12Z GFS ( the new improved update ???)the 540 line crashes towards the coast - precip get no further west then extreme eastern PA - this needs to be watched in future runs to see how much cold air can get wrapped up in this system in the metro - lets see if the Euro starts moving towards the majority of the guidance

 

http://www.tropicaltidbits.com/analysis/models/navm.html?model=gfs&region=us&pkg=mslp_pcpn_frzn&runtime=2015011512&fh=60&xpos=0&ypos=1100

I think this is all or nothing meaning all rain or cirrus clouds.

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I think this is all or nothing meaning all rain or cirrus clouds.

not many systems that pass east of the metro with the 540 line east of NYC on January 19th with  precip falling over the area is all rain - some part of the metro is going to see at least some  frozen according to the 12Z GFS........details have to be worked out

 

http://www.tropicaltidbits.com/analysis/models/navm.html?model=gfs&region=us&pkg=mslp_pcpn_frzn&runtime=2015011512&fh=60&xpos=0&ypos=1100

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not many systems that pass east of the metro with the 540 line east of NYC on January 19th with  precip falling over the area is all rain - some part of the metro is going to see at least some  frozen according to the 12Z GFS........details have to be worked out

 

http://www.tropicaltidbits.com/analysis/models/navm.html?model=gfs&region=us&pkg=mslp_pcpn_frzn&runtime=2015011512&fh=60&xpos=0&ypos=1100

If you notice very little precip falls West of the storm center, most of it is confined to the north of the surface low.

 

It's a progressive pattern and this is almost like a wave developing on a cold front.

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If you notice very little precip falls West of the storm center, most of it is confined to the north of the surface low.

 

It's a progressive pattern and this is almost like a wave developing on a cold front.

The Canadian is also in this camp, will be interesting to see if the euro follows

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Surface temps are in the mid-upper 30's during the height of the event but the rest of the column is cold. Would think we could possibly wet bulb enough to get the job done.

like I said in my previous post there will be at least a mixture somewhere in the metro if GFS and now  Euro verify BUT the Canadian only has precip making it as far west as the jersey shore and NYC and points east

 

http://www.tropicaltidbits.com/analysis/models/navm.html?model=gem&region=us&pkg=mslp_pcpn_frzn&runtime=2015011512&fh=6&xpos=0&ypos=200

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