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East Coast winter storm, February 13th-14th, imminent (Part II)


Typhoon Tip

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RGEM for the good folks who understand snow maps have variances but show trends and a publically  posted WXbell graphic

 

Snow maps do have variances, like how they are produced. WeatherBell happens to produce maps that show all snow for temps below freezing. Not so useful when mixing is a distinct possibility.

 

I'm not sure how the CMC produces it, so I can't really comment on its validity.

QPF is more useful, and even then that's a pretty poorly forecast variable.

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The trend with part 2 is hard east it seems.  But we'll have to see if that carries this evening.  Another shift like that and even I'm in the game at the end.

 

Harv going light...TBH that doesn't surprise me I think with the high retreating we torch quick with some of those earlier solutions.  The lowest levels will warm faster than we think and at the same time it's warming aloft...but that may all be moot after the 0z run.

 

Nail biter this time.

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God

the only thing confident at this late hour is still just whether something is going to happen or not.  But all these shifts ...left, right, up down, north south... however minute means major sensible differences.  

 

what a fercockta popscycle headache.   The models are like an unmanned fire hose spraying solutions all over the place

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I'll tell you what..wet snow cancel..it's 19.9/5 here right now..so figure it starts snowing and wetbulbs down to 15 or 16.. The first part of the storm is going to be powder..and will pile up quickly..

 

colder trends def gonna win out

 

 

It won't be that cold where the snow is forming so it won't be powder.

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The trend with part 2 is hard east it seems. But we'll have to see if that carries this evening. Another shift like that and even I'm in the game at the end.

Harv going light...TBH that doesn't surprise me I think with the high retreating we torch quick with some of those earlier solutions. The lowest levels will warm faster than we think and at the same time it's warming aloft...but that may all be moot after the 0z run.

Nail biter this time.

Yea Harv is like the Euro of OCM's. Tough to go against, but even we could be in line for something like 4-6" if the Euro has another 10-20 mile tick SE later tonight.

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From Alb discussion.  We usually watch the meso bands from a far.  Hope to witness one this time.  THU NIGHT...THEIR ARE SEVERAL SIGNALS IN THE GUIDANCE...ESPECIALLYFROM THE GFS/ECMWF OF AN INTENSE MESOSCALE SNOWBAND FORMING. THE CSTARRESEARCH DONE WITH THE UNIVERSITY AT ALBANY HAS SHOWN WITH THESEINTENSE BOMBS THAT MESOSCALE SNOWBANDS CAN FORM ON THE NW SIDE OFTHE H700/500 CLOSED CIRCULATION WITH INTENSE 2-D H850-700 FGEN.EVEN MORE IMPRESSIVE IS THAT A NW TO SE CROSS-SECTION THROUGH THECAPITAL REGION BTWN 00Z-06Z IS SHOWING TREMENDOUS UPWARD VERTICALMOTION COINCIDING WITH STEEPLY SLOPED FGEN...BENEATH AN AREA OFNEGATIVE EPV. THERE IS A POSSIBILITY OF A PIVOTING MESOSCALE SNOWBANDBASED ON THE LATEST CSTAR RESEARCH. THE DUAL JET STRUCTURE SETS UPAT NIGHT WITH A SECOND JET STREAK MOVING NEAR NEW ENGLAND...OURAREA WILL BE WEST OF THE UPPER JET AXIS/ LEFT FRONT QUAD/. PCPN EFFICIENCY LOOKS EXCELLENT WITH THE FAVORABLE DENDRITIC ZONEOF -10C TO -16C OVER THE AREA WITH THE POTENTIAL MESOSCALE SNOWBAND OR BANDS. SNOW RATES COULD REACH 3" OR SO AN HOUR...IF THISBAND FORMS. THE QUESTION WILL BE WHERE THE BAND SETS UP ACROSS THEREGION. THE CAPITAL REGION COULD GET INTO THIS BAND. RIGHTNOW...FROM THE CAPITAL REGION...SRN VT...AND THE ERNCATSKILLS...SOUTH AND EAST HAVE THE BEST CHC. A LOT COULDCHANGE...SINCE THIS IS 24-30 HRS OUT IN THE FCST. THE LOW DEEPENSTO ABOUT 980 HPA NEAR SE LONG ISLAND BY MIDNIGHT...AND AROUND 975HPA IN THE GULF OF MAINE BY 12Z/FRI. IT CLASSIFIES AS A SYNOPTICBOMB WITH THE 24 HPA FALL IN MSLP IN 24 HRS.

StormTotalSnowWebFcst.png

 

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God

the only thing confident at this late hour is still just whether something is going to happen or not.  But all these shifts ...left, right, up down, north south... however minute means major sensible differences.  

 

what a fercockta popscycle headache.   The models are like a unmanned fire hose

 

 

Yeah its been brutal. Some fairly small shifts in the details can mean a lot in sensible wx.

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OKX is pretty bullish, forecasting 10-14 around here.  I can't seem to upload the graphic without getting an error, but here's the link:

 

http://www.erh.noaa.gov/okx/stormtotalprecip.php

 

I've bought lift tickets to Mount Snow for Friday.  Should be epic if we can get there (driving up early Friday morning).

 

So, you can be one of the hundreds of CT cars joining the hundreds of NY and NJ cars that trapse through Shelburne on Friday nights.  :)

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God

the only thing confident at this late hour is still just whether something is going to happen or not.  But all these shifts ...left, right, up down, north south... however minute means major sensible differences.  

 

what a fercockta popscycle headache.   The models are like an unmanned fire hose spray solutions all over the place

Oy Vey!  Mets going to earn their keep over the next 48 hrs or so.

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