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January 29/30 Clipper


HoarfrostHubb

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Looks like a sharp cutoff towards my area and points west. I'm in 6-8" range. Any chance higher totals will move west a bit?

 

 

This is just insane. Did it have the heavy precip back this far? Or am I getting close to the edge? If this works out, it could be the deepest snow at my house since I moved here, 6 years ago. And I have had some good winters!

 

Looks like 1.00"+ back to both of you

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Wow. BOX extended 4-6" band right into BOS with the update.

 

If temps don't spoil the party it should verify warning in coastal EMA, NEMA.  Here we may be too warm, I don't know haven't looked.

RGEM looked really good to me, NAM, GFS, and models still bouncing around with the concept of a far SW tuck on the low.  Yeah I know ask NYC how that works out, but this is a totally diffrent setup.  I should have enough QPF fall here for 4-8" anyway.  Just don't think it'll be all snow yet.

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Mid-day BOX AFD update

 

 

 

.SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY NIGHT/...
UPDATE AS OF 1135 AM...

HAVE EXPANDED THE WINTER WEATHER ADVISORY SOUTHWARD TO INCLUDE
NORFOLK...SUFFOLK...AND MUCH OF PLYMOUTH COUNTIES FOR FRI AND FRI
NIGHT. NEW MODEL INFORMATION SHOWS THAT THE STORM WILL BE
REDEVELOPING SOUTH OF CAPE COD AND INTENSIFYING OVER THE GULF OF
MAINE. FORECAST PRECIPITATION AMOUNTS...IN THE FORM OF
SNOW...SHOULD REACH 3 TO 4 OR AN OUTSIDE CHANCE OF 5 INCHES IN
THESE AREAS BY THE TIME THE SNOW ENDS EARLY SAT MORNING.
TRICKY BECAUSE THE AMOUNTS ARE SPREAD OUT OVER A RELATIVELY LONG
DURATION... BUT GIVEN THE BIG SNOWFALL WE JUST HAD...THE IMPACTS
OF ADDITIONAL SNOW COULD BE IMPORTANT...THUS WENT WITH THE
ADVISORY. WE ARE ALSO WATCHING THE POTENTIAL FOR AS MUCH AS 8
INCHES IN FAR NORTHEAST MA...MAINLY ESSEX COUNTY... WHICH COULD
REQUIRE A WARNING. WILL ASSESS THIS DURING THE AFTERNOON.

PREVIOUS DISCUSSION...

TONIGHT AND FRIDAY...
DIGGING SHORTWAVE FROM THE UPPER LAKES WILL MOVE SE AND PHASE
WITH ANOTHER IMPULSE MOVING OUT OF THE OHIO VALLEY TO FORM A NEG
TILT TROF ALONG THE NEW ENG COAST ON FRI. PRIMARY LOW LIFTS NE
INTO NORTHERN NY TONIGHT WHILE SECONDARY LOW DEVELOPS NEAR THE SNE
COAST FRI ASSOCD WITH THE MID LEVEL SHORTWAVE AND HEIGHT FALLS
MOVING TO THE COAST. ECMWF IS FURTHEST SOUTH WITH THE SECONDARY
LOW AND AS A RESULT HAS MORE QPF THAN THE OTHER MODELS. THE TRACK
OF THE 700 MB LOW WILL BE CRITICAL TO WHERE HEAVIER SNOWFALL SETS
UP.

DEEPENING MOISTURE AND INCREASING MID LEVEL LIFT WILL RESULT IN A
PERIOD OF SNOW DEVELOPING ACROSS SNE LATER TONIGHT INTO FRI.
HOWEVER...SOUTHERLY FLOW AHEAD OF THE PRIMARY LOW WILL LIKELY WARM
THE BOUNDARY LAYER ENOUGH FOR A MIX OR CHANGEOVER TO RAIN LATE
TONIGHT INTO FRIDAY ALONG THE IMMEDIATE S COAST AND ESPECIALLY
CAPE/ISLANDS.

THE 700 MB LOW TRACKS ACROSS SNE WHICH SUGGESTS HEAVIER SNOW WILL
SET UP ACROSS NORTHERN AREAS...MAINLY N OF THE MASS PIKE WITH
LIGHTER SNOW TO THE SOUTH. THROUGH FRIDAY...GENERALLY LOOKING AT
2-3 INCHES NORTH OF THE PIKE WITH 1-2 INCHES TO THE
SOUTH...EXCEPT LESS THAN AN INCH NEAR THE SOUTH COAST.

EXPECT GRADUAL IMPROVING CONDITIONS IN THE CT VALLEY DURING THE
AFTERNOON...WITH GUSTY NW WINDS DEVELOPING BY LATE IN THE DAY.

FRIDAY NIGHT...
MID LEVEL TROF CLOSES OFF JUST SOUTH OF THE SNE COAST AS COASTAL
LOW INTENSIFIES IN THE GULF OF MAINE. AS MENTIONED ABOVE...ECMWF
IS FURTHEST S WITH THE SFC LOW AND THUS IS MOST BULLISH ON BRINING
A PERIOD OF HEAVIER SNOW...MAINLY TO N/NE MA. WE USED A MULTI
MODEL BLEND OF QPF AS A BASIS FOR SNOW ACCUM. MODELS ARE IN
AGREEMENT THE MID LEVEL LOW MOVES INTO THE GULF OF MAINE WITH A
BAND OF SNOW IN THE COMMA HEAD ROTATING INTO THE EASTERN HALF OF
SNE. EXPECT AN ADDITIONAL INCH OR 2 FOR CENTRAL AND E MA...WITH
LOCALLY HIGHER AMOUNTS POSSIBLE ACROSS NE MA. WILL HAVE TO WATCH
THIS AREA FOR THE POTENTIAL OF HIGHER ACCUM PER ECMWF.

WE DECIDED ON A WINTER WEATHER ADVISORY FOR AREAS NORTH OF THE
MASS PIKE IN N/NE MA WHERE HEAVIEST SNOW EXPECTED...FOR THE PERIOD
FROM MIDNIGHT TONIGHT TO FRI NIGHT. CURRENT THINKING IS TOTAL
ACCUM THROUGH FRI NIGHT WILL BE 4-6 INCHES N/NE MA WITH LOCALLY
HIGHER AMOUNTS POSSIBLE. LOW PROB THAT WARNING WILL BE NEEDED FOR
NE MA PER ECMWF...BUT CONFIDENCE NOT HIGH ENOUGH SO WE OPTED FOR
AN ADVISORY.

TURNING MUCH COLDER FRI NIGHT AS GUSTY NW WINDS DEVELOP WITH
DEEPENING LOW PRES IN THE GULF OF MAINE. DANGEROUSLY COLD WIND
CHILLS OF 10 TO 20 BELOW ZERO IN HIGHER TERRAIN OF CENTRAL AND W
MA...WITH 5 TO 10 BELOW IN THE COASTAL PLAIN. WIND CHILL
ADVISORIES WILL LIKELY BE NEEDED FOR HIGHER TERRAIN IN CENTRAL
AND W MA.
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