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Post super bowl storm Model discussion


UlsterCountySnowZ

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Another Upton update but I think only the very top was updated

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LIGHT SNOW/FLURRIES WILL CONTINUE TO OVERSPREAD THE AREA FROM THE

SW OVER THE NEXT FEW HOURS. A STEADIER SNOW WILL DEVELOP ACROSS

THE AREA AFTER MIDNIGHT. ONLY MINOR ADJUSTMENTS MADE TO FORECAST

TO ACCOUNT FOR ONGOING CONDITIONS.

MODELS IN GOOD AGREEMENT WITH LOW PRESSURE TAKING SHAPE OVER THE

MID MISSISSIPPI RIVER VALLEY THIS AFTERNOON...TRACKING THROUGH THE

OHIO VALLEY TONIGHT...AND BEGINNING TO REDEVELOP JUST SOUTH OF THE

TRI- STATE MONDAY MORNING.

INCREASING AND LOWERING CLOUDS THIS EVENING...WITH GRADUALLY

INCREASING CHANCES OF LIGHT SNOW FROM W TO E TONIGHT.

TEMPS GENERALLY STEADY IN LOWER 30S-35 ALONG THE COAST FOR MOST OF

THE NIGHT...THEN WETBULBING TO FREEZING WITH START OF HEAVY

SNOW...THEN RISING ABOVE FREEZING LATE ACROSS IMMEDIATE SOUTH AND

EASTERN COASTAL AREAS TO ABOVE FREEZING TOWARDS DAYBREAK. JUST

INTERIOR OF THE IMMEDIATE COAST...ACROSS INTERIOR NE NJ...LOWER

HUDSON VALLEY...AND SOUTHERN CT...TEMPS SHOULD FALL INTO THE TEENS

AND 20S WITH EVAPORATIONAL COOLING ONCE SNOW STARTS AND HOLD

THERE INTO DAYBREAK.

BASED ON APPROACHING COUPLED JET STRUCTURE...TIGHT LOW/MID-LEVEL

THERMAL STRUCTURE...AND 60-70 KT LLJ FEEDING STRONG GULF MOISTURE

FEED OF 2-3 STD PWATS UP OVER THE REGION LATE TONIGHT...EXPECTING

HEAVY SNOW INITIALLY TO DEVELOP ACROSS THE REGION FROM W TO E AFTER

2 TO 4 AM. SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR POSSIBLE.

THIS IS SUPPORTED BY HIGH PROB OF 1" PER HOUR SNOWFALL RATES IN

THE SREF.

A QUICK 2 TO 5 ALONG THE CITY/COAST IS THE MOST LIKELY

(HIGHEST AMOUNTS ACROSS NORTHERN PERIPHERIES WITH LOCALLY 6

INCHES) BEFORE ANY CHANGEOVER TOWARDS DAYBREAK. A GENERAL 4 TO 8

INCHES OF SNOW BY DAYBREAK ACROSS INTERIOR NE NJ...LOWER HUDSON

VALLEY...AND SW CT. 3 TO 5 INCHES ACROSS SE CT. THESE RANGES HAVE

THE POTENTIAL TO BE SHIFTED UP OR DOWN BY 1-2 INCHES...BECAUSE A 1

HOUR DIFFERENCE IN TIMING OF CHANGEOVER WILL MEAN THE DIFFERENCE

IN ALMOST 2 INCHES OF SNOW FROM THE TOTAL! THIS VARIABILITY ISSUE

IS ILLUSTRATED WELL BY THE 10 AND 90 PERCENTILE SNOW TOTAL GRAPHICS

ON OUR WEB PAGE.

FOR THE NYC/NJ METRO AND COAST...ALMOST ALL OF THE SNOWFALL FOR THE

EVENING WILL BE SEEN IN THE EARLY MORNING HOURS. THE EARLY

MORNING COMMUTE WILL BE HEAVILY IMPACTED FOR THE ENTIRE AREA.

THEREAFTER...THE FORECAST CHALLENGE REMAINS IN HOW QUICKLY AND FAR

NORTH WARM AIR RIDES IN ALOFT AS WE APPROACH DAYBREAK MONDAY

MORNING...AND WHERE A COASTAL FRONT SETS UP DEMARCATING A TIGHT

GRADIENT BETWEEN SE WINDS AND 40 DEGREE TEMPS TO THE SE AND

ENE/NE WINDS TO THE NORTH WITH SUB-FREEING TEMPS.

-- End Changed Discussion --

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Hang on to whatever you need to.  I like the HRRR for my fantasies too.

In this case, I don't think 4-6" of snow is out of the question. There is a heavy snow band working its way into the area now which is expanding. This could drop an inch or two, and behind it before the mix and changeover, snow should be heavy throughout the early morning hours. I do believe that much of the area (including the city and NNJ plus parts of LI) could possibly reach the 6 inches.....With immediate northern suburbs over 7"

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In this case, I don't think 4-6" of snow is out of the question. There is a heavy snow band working its way into the area now which is expanding. This could drop an inch or two, and behind it before the mix and changeover, snow should be heavy throughout the early morning hours. I do believe that much of the area (including the city and NNJ plus parts of LI) could possibly reach the 6 inches.....With immediate northern suburbs over 7"

So far there's been no warm push to the south of us... Interesting... Just read what Paul Kocin had to say...

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