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February 8th-9th Potential Bomb Part III


earthlight

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The gfs is better but not great, the 6 to 10 would definitely verify, over a foot in the city and parts of LI get whacked.

Would not worry about it. #1, it's the 18z and #2 it is blatantly obvious the GFS is suffering crippling convective feedback issues that misrepresents the temperature profiles and total QPF. Count on QPF being higher than this and temperatures being colder but for sure count on all the local TV and radio stations to not say higher than 12 or at most 14 for NYC metro for tonight's early evening news.

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You are correct sorry for that.

 

But based on the latest models it should be for W./E. Monmouth on north thru Middlesex.

 

Rossi

C'mon man our Mt. Holly crew is one of the best around who know exactly what they are doing AND are nice enough to keep us in the loop by posting on this board. No need to second guess them.

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The GFS is at the low end of all the QPF guidance    the NAM , EURO , EURO ens  and SREF are all plus 2 . be careful

taking too much away from this . lets see who corrects at 0z

 

And being a tad warmer at the surface is a function of not being as robust . The others make this a bomb the GFS is less than that .

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Amazing discussion by Upton

 

 


.SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY/...GLOBALMODELS HAVE ALL COMING INTO OVERWHELMINGLY GOOD AGREEMENT FOR AMAJOR...IF NOT HISTORIC WINTER STORM ACROSS THE TRI-STATE AREAFRIDAY INTO SATURDAY. THE HEAVIEST SNOWS AND STRONGEST WINDS WILLFRIDAY NIGHT INTO EARLY SATURDAY MORNING.LOW PRESSURE ALONG THE MID ATLANTIC COAST ON FRIDAY AFTERNOON WILLUNDERGO MAJOR INTENSIFICATION AS THE LOW TRACKS TO THE SOUTH ANDEAST OF LONG ISLAND FRIDAY NIGHT. WHILE THERE LOOKS TO BE A BRIEFCHANGEOVER TO RAIN OR A WINTRY MIX AT THE COAST LATE FRIDAY MORNINGAND AFTERNOON...ALL PRECIPITATION WILL GO BACK TO SNOW BY EVENING.IN FACT...TRENDS IN THE MODELS HAVE BEEN COLDER...INCLUDING THE MOSTRECENT 18Z NAM WRF. A HEALTHY E/SE FLOW IN THE BOUNDARY LAYER LATETONIGHT INTO FRIDAY AFTERNOON WILL LIKELY BE SUFFICIENT ENOUGH TOBRING IN SOME WARMER AIR AT THE COAST. THE OFFSETTING FACTOR THOUGH ISTHE RAPIDLY DEEPENING LOW AND THE ISALLOBARIC COMPONENT OF THEWINDS...WHICH COULD ALLOW THE COLD AIR TO DRAIN SOUTH INTO THEFORECAST AREA EVEN FASTER THAN WHAT MODEL GUIDANCE SUGGESTS. INTHIS CASE...SNOWFALL TOTALS COULD BE EVEN HIGHER AT THE COAST IF ACHANGEOVER DOES NOT OCCUR. PREFERENCE WAS TOWARD THE COLDER ECMWFBASED ON GOOD RUN TO RUN CONTINUITY AND TRENDS IN OTHER MODELS.THE NAM WRF AND ECWMF ARE THE MOST AGGRESSIVE SOLUTIONS WITH SEVERALINCHES OF LIQUID ACROSS THE AREA.  THE GFS WHILE MORECONSERVATIVE...ALSO POINTS TO STRONG FRONTOGENESIS IN THE 85-70HLAYER WITH MID LEVEL DEFORMATION AND INSTABILITY ALOFT...ALLINGREDIENTS POINTING TOWARD SIGNIFICANT SNOW BANDING SOMEWHERE INSOUTHERN NEW ENGLAND. THIS SIGNATURE OFTEN INDICATES VERY HIGHSNOWFALL TOTALS ASSOCIATED WITH EAST COAST CYCLOGENESIS. INADDITION...WITH STORM CENTRAL PRESSURE SAT MORNING DROPPING TOAROUND 975 MB NEAR THE BENCHMARK...40N...70W...AND HIGH PRESSUREOVER EASTERN CANADA AROUND 1040 MB...WINDS WILL BE VERY STRONG.BLIZZARD CONDITIONS ARE LIKELY FROM NYC AND POINTS EAST...WITHSLIGHTLY LOWER WINDS TO THE WEST.AS FOR SNOWFALL ACCUMULATIONS...LOOKING FOR 10 TO 15 INCHES ALONGTHE COAST...12 TO 16 INCHES LOWER HUDSON VALLEY...AND 18 TO 24INCHES ACROSS CT. THERE COULD BE LOCALIZED HIGHER AMOUNTS WITHSTRONG SNOW BANDS.THUS...BLIZZARD WARNINGS HAVE BEEN ISSUED FROM NYC METRO ANDPOINTS EAST...WITH WINTER STORM WARNINGS TO THE NW. THE WORSTCONDITIONS WILL BE DURING THE NIGHTTIME FRIDAY AND EARLY MORNINGHOURS SATURDAY.
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