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Feb 8th-9th Do We Finally Get A Coastal?


dryslot

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Thursday will struggle to reach the mid 20s here ace. I'm likening us to BWI at that time.

 

 

Yeah the HP is like PDII for location except about 200-300 miles north. Its a very good spot to put New England over a great combo of cold and frontogensis

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He's a :weenie:

 

 

 

 

 

These are the statements we need to be careful about. A foot plus minimum is a pretty high bar to set. There are a lot of potential QPF amounts on the table, but this is how we set ourselves up for disappointment.

 

 

lol, Whats your take? I have some concerns

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He's a :weenie:

 

 

 

 

 

These are the statements we need to be careful about. A foot plus minimum is a pretty high bar to set. There are a lot of potential QPF amounts on the table, but this is how we set ourselves up for disappointment.

 

 

And You're the bun.

 

 

Are either or both of you on at GYX for this one?

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If the 0z suite continues to advertise this type of system it's literally mobilization time.  I find it difficult to believe that much QPF is coming, but if it does or close to it, it will simply overwhelm public works ability to keep roads clear.  It's the big one, the one that paralyzes the region. 

 

We shall see, but it's about as severe as you'll ever see modeled.

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I would think a foot + is on the table at a minimum.  Even if there is a cut back, I would be shocked it cut back to 8"

A lot has to go right to get a foot of snow.  What this storm has going for it is very high upward potential.  But a miss southeast or rain could clearly still limit snowfall.  I would put a reasonable baseline at 4", maybe 4-6" or so because every piece of guidance I've seen shows about this much.  They deliver the goods several different ways, which lends confidence to at least moderate snowfall.   I really like to see the high QPF values even without the direct coastal impact.  March 2001 can always happen though, so you can never count on snow for sure 3 days out. 

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If the 0z suite continues to advertise this type of system it's literally mobilization time. I find it difficult to believe that much QPF is coming, but if it does or close to it, it will simply overwhelm public works ability to keep roads clear. It's the big one, the one that paralyzes the region.

We shall see, but it's about as severe as you'll ever see modeled.

:weenie:

But yeah, public works will need to start prepping in a day or 2 if things hold serve. I expect a bit of a back down, but maybe not

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If the 0z suite continues to advertise this type of system it's literally mobilization time.  I find it difficult to believe that much QPF is coming, but if it does or close to it, it will simply overwhelm public works ability to keep roads clear.  It's the big one, the one that paralyzes the region. 

 

We shall see, but it's about as severe as you'll ever see modeled.

High QPF event seems likely.  Recent GGEM, NCEP, and UK runs have shown fairly wet solutions (.5" - 1.5") from primarily just the northern stream.  Ensemble plumes moist as well.  The uncertainty at this point seems to be, does this become historic.  How much impact does the developing coastal low center have, and how far inland does that impact extend?

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A lot has to go right to get a foot of snow.  What this storm has going for it is very high upward potential.  But a miss southeast or rain could clearly still limit snowfall.  I would put a reasonable baseline at 4", maybe 4-6" or so because every piece of guidance I've seen shows about this much.  They deliver the goods several different ways, which lends confidence to at least moderate snowfall.   I really like to see the high QPF values even without the direct coastal impact.  March 2001 can always happen though, so you can never count on snow for sure 3 days out. 

would you be comfortable with 4-7" or just 4-6"? 4-7" is like a 3-inch window there so maybe not exact enough, right? but then, 6" is 2" more than 4"...that's 50% more plowable snow.

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NCEP seems to put it about an equal chance...GGEM/UK vs the GFS/Euro

 

THE SECOND SOUTHERN STREAM WAVE (INITIALLY OVER THE PACIFIC) IS
THE MORE IMPORTANT OF THE TWO. THE NAM DEPICTION OF THIS WAVE IS
VERY POOR...AS IT IS SUBSTANTIALLY WEAKER AND MORE DIFFUSE THAN
THE GFS/ECMWF/UKMET AS THE WAVE TRACKS ACROSS NORTHERN MEXICO ON
WEDNESDAY AND INTO THE DEEP SOUTH ON THURSDAY. THE IMPORTANCE OF
THIS WAVE LIES IN ITS POTENTIAL PHASING WITH NRN STREAM ENERGY OFF
THE MID-ATLANTIC COASTLINE ON FRIDAY. BY THIS TIME THE NAM BECOMES
A SIGNIFICANT OUTLIER AS IT ONLY DEPICTS A VERY WEAK UPPER-LEVEL
WAVE AND A SURFACE LOW THAT IS SEVERELY SUPPRESSED RELATIVE TO ALL
OTHER GUIDANCE. THE GFS SOLUTION RESEMBLES THE ECMWF WITH THIS
ENERGY. AS A RESULT...THE GFS/ECMWF/UKMET ALL SPIN UP A SURFACE
LOW OFF THE MID-ATLANTIC COASTLINE. THE UKMET AND CMC ARE SOMEWHAT
LESS INTENSE WITH THE NRN STREAM ENERGY...WHICH RESULTS IN A LATER
AND SLIGHTLY FARTHER EAST SURFACE LOW DEVELOPMENT. GIVEN THE
CONSISTENCY OF THE 12Z ECMWF WITH MAINTAINING AN EARLIER
PHASING...WHICH WOULD RESULT IN A STRONGER SURFACE LOW CLOSER TO
THE COAST...THIS SOLUTION SEEMS TO CARRY ABOUT EQUAL POSSIBILITY
AS THE WEAKER UKMET/CMC SOLUTION
. AT THIS POINT...WILL RECOMMEND A
BLEND OF THE GFS/UKMET/ECMWF WITH THE 00Z ECMWF ENSEMBLE MEAN.
 

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