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Feb 3rd event


Brian5671

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Precip shield and center at 18z at 66 hrs are 100 miles north than at 72 he's at 12z.

1st step in the nam moving N

The SREF Canadian and Euro have this. I expect the nam and gfs to join soon enough

They look to be converging. The Euro went south some...the nam north some. The GGEM might be a good compromise. (I usually don't like following the GGEM or NAM in any situation)
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They look to be converging. The Euro went south some...the nam north some. The GGEM might be a good compromise. (I usually don't like following the GGEM or NAM in any situation)

 

Agree

 

given that the Euro has basically held serve on this one, expect the nam and others to inch north in subsequent runs

 

Euro went from around .7" for the area at 0z to about .4" at 12z. It moved south a bit. GGEM solution, a middle ground, would be the most likely scenario.

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Agree

 

 

Euro went from around .7" for the area at 0z to about .4" at 12z. It moved south a bit. GGEM solution, a middle ground, would be the most likely scenario.

 

GGEM is barely .10" for NYC.

That isn't a middle ground.

The middle ground right now are the 15z srefs, which have .21" for LGA.

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GGEM is barely .10" for NYC.

That isn't a middle ground.

The middle ground right now are the 15z srefs, which have .21" for LGA.

 

Based on the map just posted by +SNfreak21 there's definitely more than .1" for NYC. And if the GGEM really doesn't have more than 0.1", then I'm surprised the Euro has that much more.

 

By middle ground I mean the avg. of all the models.

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Based on the map just posted by +SNfreak21 there's definitely more than .1" for NYC. And if the GGEM really doesn't have more than 0.1", then I'm surprised the Euro has that much more.

By middle ground I mean the avg. of all the models.

It is around .1 if you convert mm to inches. But it looks like a decent middle ground to me as of now. I can't argue going with the serfs either though.

.1-.25 looks like a decent forecast for now for nyc metro

Edit: im blind and they need a new color scheme. It's closer to .15

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It is around .1 if you convert mm to inches. But it looks like a decent middle ground to me as of now. I can't argue going with the serfs either though.

.1-.25 looks like a decent forecast for now for nyc metro

 

GGEM is about .13-.15" for NYC.

 

.1-.25" is reasonable, think the Euro is too much.

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given that the Euro has basically held serve on this one, expect the nam and others to inch north in subsequent runs

euro shifted south a lot from 0z so not sure about the holding serve part. I am in the same boat here wanting a more north solution but even worse being due west of NYC in central pa. But when only one model has sig precip north I don't want to see it start trending south at all. A compromise solution seems likely and that prob means another Philly hit and miss up here.
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Mount holly

ANOTHER HIGH PRESSURE SYSTEM TRIES TO SQUEEZE IN ON MONDAY AS THE

FRONT CONTINUES TO SAG SOUTHWARD. THIS IS WHEN THE FUN BEGINS... THE

QUESTION BECOMES HOW FAST CAN WE COOL THE COLUMN, OR MAINLY THE

BOUNDARY LAYER, AND HOW FAR NORTH DOES THE NEXT MID-LEVEL WAVE TRACK

ALONG THE COLD FRONT. THE GFS AND NAM (THE AMERICANS) HAVE TRENDED A

BIT WEAKER WITH THE SURFACE WAVE AND SLIGHTLY FURTHER SOUTH KEEPING

A BULK OF THE QPF AND ENERGY ACROSS OUR DELMARVA/SOUTHERN NJ ZONES.

THE OTHER GUIDANCE (THE NON-AMERICANS) HAVE A DEEPER BETTER DEFINED SURFACE

LOW AND BRING THE LOW FURTHER NORTH ALLOWING FOR MORE QPF AND BETTER

FORCING ACROSS MUCH OF THE REGION. BEING THAT THE OLYMPICS ARE STILL

A WEEK AWAY IT IS OK TO NOT ROOT FOR THE AMERICANS IN THIS SINCE.

THE OVERALL TREND THIS ENTIRE WINTER HAS BEEN FOR A STRONGER THAN

FORECASTED SYSTEM THAT TENDS TO TRACK/PROGRESS MORE TOWARDS THE

NORTH-NORTHWEST ONCE WE GET WITHIN 3-4 DAYS OF AN EVENT. THAT BEING

SAID IT SEEMS THAT THE UKMET/NH-GEM/EURO HAVE BEEN DOING A PRETTY

GOOD JOB HANDLING THIS SYSTEM. DID NOT FORECAST THE AMOUNT OF QPF

THAT THEY ARE SPITTING OUT JUST YET AS WE STILL HAVE PLENTY OF TIME

TO REFINE THIS BUT WITH TEMPERATURES FORECASTED TO BE DROPPING

THROUGHOUT THE DAY ON MONDAY WE ARE LOOKING A DECENT SNOWFALL EVENT.

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The southern stream s/w is a little sharper this run.  With a southerly flow straight out of the Gulf, this doesn't have to be that dynamic to get a plowable event.  Another tick or two stronger by 36hrs or 42hours and the precip shield would come 100 miles north.  Good step from the GFS.  Although it's more likely a move towards consensus as opposed to a sustained north trend.

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Mount holly

ANOTHER HIGH PRESSURE SYSTEM TRIES TO SQUEEZE IN ON MONDAY AS THE

FRONT CONTINUES TO SAG SOUTHWARD. THIS IS WHEN THE FUN BEGINS... THE

QUESTION BECOMES HOW FAST CAN WE COOL THE COLUMN, OR MAINLY THE

BOUNDARY LAYER, AND HOW FAR NORTH DOES THE NEXT MID-LEVEL WAVE TRACK

ALONG THE COLD FRONT. THE GFS AND NAM (THE AMERICANS) HAVE TRENDED A

BIT WEAKER WITH THE SURFACE WAVE AND SLIGHTLY FURTHER SOUTH KEEPING

A BULK OF THE QPF AND ENERGY ACROSS OUR DELMARVA/SOUTHERN NJ ZONES.

THE OTHER GUIDANCE (THE NON-AMERICANS) HAVE A DEEPER BETTER DEFINED SURFACE

LOW AND BRING THE LOW FURTHER NORTH ALLOWING FOR MORE QPF AND BETTER

FORCING ACROSS MUCH OF THE REGION. BEING THAT THE OLYMPICS ARE STILL

A WEEK AWAY IT IS OK TO NOT ROOT FOR THE AMERICANS IN THIS SINCE.

THE OVERALL TREND THIS ENTIRE WINTER HAS BEEN FOR A STRONGER THAN

FORECASTED SYSTEM THAT TENDS TO TRACK/PROGRESS MORE TOWARDS THE

NORTH-NORTHWEST ONCE WE GET WITHIN 3-4 DAYS OF AN EVENT. THAT BEING

SAID IT SEEMS THAT THE UKMET/NH-GEM/EURO HAVE BEEN DOING A PRETTY

GOOD JOB HANDLING THIS SYSTEM. DID NOT FORECAST THE AMOUNT OF QPF

THAT THEY ARE SPITTING OUT JUST YET AS WE STILL HAVE PLENTY OF TIME

TO REFINE THIS BUT WITH TEMPERATURES FORECASTED TO BE DROPPING

THROUGHOUT THE DAY ON MONDAY WE ARE LOOKING A DECENT SNOWFALL EVENT.

Mt. Holly only has a 30 percent chance of snow for monday in central NJ zones - so they are taking a really conservative approach 

 

http://kamala.cod.edu/nj/latest.fpus51.KPHI.html

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American model suite trending north this afternoon.  The guidance has been too weak with vorts all winter (12/8, 1/2, 1/21, 1/25, 1/29) up until show time.  Only difference this time is the Euro has latched on early (because its in the subtropical stream?)  Writing is on the wall, models will trend stronger and further north all weekend...3 to 6 event area wide

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The 18Z RGEM which goes out 54 hours looks almost identical to the NAM/GFS through 54 hours, it is wetter and maybe 75-100 miles NW over AR/MO/KY but overall the difference clearly is becoming what occurs after 60 hours or so, the GFS/NAM overall want to shear and dampen the system out while the other models do not.

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The southern stream s/w is a little sharper this run.  With a southerly flow straight out of the Gulf, this doesn't have to be that dynamic to get a plowable event.  Another tick or two stronger by 36hrs or 42hours and the precip shield would come 100 miles north.  Good step from the GFS.  Although it's more likely a move towards consensus as opposed to a sustained north trend.

 

Love your analysis in these threads.  Are you giving thoughts from an Albany perspective or a NYC area perspective?  You guys should cash in nicely on Wednesday I would think.

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