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January 2018 Model Discussion Thread


bluewave

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  On 12/30/2017 at 11:16 PM, UlsterCountySnowZ said:

Looks like a decent jump east to my eyes

C74FE51B-E28B-4907-9964-0A24FFBF06D7.gif

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this is an optical illusion caused by a deeper system look at the pressure drops as compared to the earlier run - more wrapped up and outer portion nudged west - also its more important at this stage of the game to pay more attention to 500mb and not the surface features as they will be jumping all over the place

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  On 12/30/2017 at 11:07 PM, UlsterCountySnowZ said:

Our upper level low 

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Would this be considered a bonafide triple phaser like March 1993?  If so this might be the one case where a triple phaser is needed to take the classic track, usually triple phasers at our latitude cut or hug.  But with the pattern we have right now, a triple phaser could take a BM track.

Thinking of that 940mb monster the Euro showed a few days ago.

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  On 12/30/2017 at 11:46 PM, Paragon said:

Would this be considered a bonafide triple phaser like March 1993?  If so this might be the one case where a triple phaser is needed to take the classic track, usually triple phasers at our latitude cut or hug.  But with the pattern we have right now, a triple phaser could take a BM track.

Thinking of that 940mb monster the Euro showed a few days ago.

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The issue is how far out ahead the southern stream is getting and spawning the low out at sea. We want that to slow down so the low doesn’t form so far out. The northern stream diving in will try to tug it in but it’ll be easier if the streams can phase sooner. 

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  On 12/30/2017 at 11:41 PM, Cobalt said:
Doesn't the NAVGEM have a tendency to suppress storms? Seems like the GFS and NAVGEM are usually in that camp
Actually.. Navgem is very useful. It has a very progressive bias. When Navgem is west of other models... Look for a correction west with the other models.
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  On 12/31/2017 at 12:12 AM, USCG RS said:
  On 12/30/2017 at 11:41 PM, Cobalt said:
Doesn't the NAVGEM have a tendency to suppress storms? Seems like the GFS and NAVGEM are usually in that camp
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Actually.. Navgem is very useful. It has a very progressive bias. When Navgem is west of other models... Look for a correction west with the other models.

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It used to have a progressive bias.  I'm not so sure anymore.   I really don't have any idea.  People love saying it though.  

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