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Thanksgiving Week Nor'easter Discussion


Zelocita Weather

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Pretty good agreement between the ensemble mean and the OP on a juicy system.

This would be the first one inch or greater event at NYC since 9-22 if it verified.

I wonder what the longest streak between once inch events at NYC is?

 

attachicon.gifMSLP_North32America_144.gif

Somewhat of a consensus now, thank god. Hopefully the GFS caves soon.

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Upton:

 

MODELS ARE STILL IN DISAGREEMENT REGARDING THE DEVELOPMENT AND TRACK
OF LOW PRESSURE FORMING TO OUR SOUTH AND POSSIBLY COMING CLOSE
ENOUGH TO US TO BRING SOME PRECIP OUR WAY...PERHAPS AS EARLY AS
DURING THE DAY ON TUESDAY...BUT MORE LIKELY ON WEDNESDAY. FORECAST
TELECONNECTION PARAMETERS WOULD SEEM TO SUPPORT A MORE PROGRESSIVE
STORM SYSTEM WITH A LACK OF DOWNSTREAM BLOCKING. THE 12Z
ECMWF...WHICH MANAGES TO PHASE THE NORTHERN AND SOUTHERN STREAM
ENERGIES...DOES SO A LITTLE LATE IN THE GAME FOR A FAIRLY LONG
LASTING HIGH QPF EVENT THAT IT DEPICTS OVER HERE. WITH THIS
SAID...IT HAS BEEN MORE CONSISTENT WITH ITS ENSEMBLE MEAN VS THE
GFS. CANNOT COMPLETELY DISCOUNT IT AT THIS TIME. PREFERENCE IS GO
SOMEWHERE ALONG THE LINES OF A WPC/12Z GFS MEAN BLEND REGARDING THE
TRACK AND TIMING OF THE STORM. THIS WOULD MEAN LOW CHANCES OF MIXED
PRECIP DURING THE DAY ON TUESDAY WITH CHC POPS FOR TUESDAY NIGHT AND
WEDNESDAY. WILL KEEP PRECIP TYPE SIMPLE THIS FAR OUT...SO GENERALLY
A MIX OF RAIN AND SNOW ACROSS THE AREA...BUT FAVORING RAIN FOR THE
CITY AND COASTAL SECTIONS...AND MORE OF A MIX WELL INLAND.

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I don't think there is a chance anymore of a major snowstorm along 1 -95 - as mentioned in your article  most Mets are discounting that chance BUT there is still the possibility of either it starting as snow OR ending as snow or both ....

Agree, climo is against it as is the lack of blocking, but nothing will be ruled out until tomorrow or Sat after the 12z runs...

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if it's like Thanksgiving 1971 north of the city will get clobbered...the city warmed up enough for no snow at all...A similar storm came in February that year and was snow to rain ending as snow...At this point in time it's wait and see...It doesn't matter how cold it gets before the storm if the storm track is to close to the coast or to the west at worse...

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Agree, climo is against it as is the lack of blocking, but nothing will be ruled out until tomorrow or Sat after the 12z runs...

Fwiw euro ens had 20 of 50 members showing 2 inches or more (of snow) for Hartford area according to met/mod "Ct rain" some w considerably more. Not sure what was shown further SW toward nw nyc burbs but still could be interesting. Thread the needle on the phase, and pray for a slower southern stream in future runs.

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I would not rule out what the gfs is showing. The gfs has schooled the euro earlier this season, remember the coastal weeks back. Euro showed a huge hit and the gfs was a miss and the gfs ended up being right.

Wasn't the gefs with the gfs then though?

 

Edit: Also the Euro had no support form its ensemble members then too.

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Wasn't the gefs with the gfs then though?

 

Edit: Also the Euro had no support form its ensemble members then too.

How many operational Euro runs have showed the scenario it now shows, a track right on or just west of the coastline? Answer-ONE. I would want to see at least three consecutive runs of consistency in the current track on the operational Euro. If the Euro continues jumping back and forth, or trending back OTS, I would tend to disregard the current operational run or the current ensembles.

WX/PT

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