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Valentine's Day weekend storm discussion part 2


Sickman

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Upton update finally

THE LOW WAS MOVING EAST OF THE DELMARVA WHILE DEEPENING. THE LOW

CONTINUES TO TRACK EAST AND THEN NORTHEAST OVERNIGHT. LULL IN THE

PRECIPITATION ACROSS MUCH OF THE AREA AS ONE WEAK LOW MOVES OVER

CAPE COD WITH A WEAK MESO HIGH OVER LONG ISLAND. LOOKING MORE

LIKELY THAT THE HEAVIEST PRECIPITATION WILL BE JUST ALONG THE

COAST OR SOUTH OF LONG ISLAND INTO LATE TONIGHT. WITH SLIGHTLY

LESS QPF EXPECTED FROM 00Z TO 06Z LOWERED THE SNOW AMOUNTS ABOUT

AN INCH OR SO ACROSS THE LOWER HUDSON VALLEY INTO NORTHEASTER NEW

JERSEY AND INTO WESTERN LONG ISLAND.

WHILE THE MODELS ALL AGREE ON THE GENERAL TRACK OF THE SURFACE

AND UPPER LEVEL FEATURES WITH THIS STORM...THERE ARE STILL QUITE A

BIT OF DIVERGENCE IN THE DETAILS.

DO EXPECT QUITE A BIT OF LOCAL VARIABILITY IN SNOW FALL

AMOUNTS...WITH VARIATIONS OF 2-6 INCHES OVER A 10-20 MILE DISTANCE

QUITE POSSIBLE. THE SNOW FALL FORECAST WILL BE REFINED FURTHER

THIS EVENING AS THE PLACEMENT OF SNOW BANDS BECOMES MORE EVIDENT.

THE NAM/CMC AND TO A LESSER EXTENT THE ECMWF SUGGEST A PRECIPITATION

MINIMA WILL DEVELOP OVER CT/FAR EASTERN LONG ISLAND OVERNIGHT...WHILE

THE GFS/SREF HAVE THE HEAVIEST SNOW OVER THE SAME AREA. MESO-

SCALE MODELS DO LEAN TOWARDS THE NAM/CMC IN WANTING TO PLACE THE

TROWAL AND ITS ASSOCIATED SNOW BAND FROM CENTRAL-WESTERN LONG

ISLAND ON NW INTO EASTERN PORTIONS OF THE LOWER HUDSON VALLEY/SW

CT...WHILE THE GFS PLACES IT OVER CT/CENTRAL/EASTERN LONG

ISLAND...THE ECMWF S OF LONG ISLAND/NYC. NOTING THUNDER OVER

SW PA/N WV AHEAD OF THE UPPER LOW...HAVE A SLIGHT CHANCE FOR SOME

THUNDER SNOW AS WELL. NOT ENOUGH CONFIDENCE IN THIS OCCURRING

THOUGH TO PLACE IN THE FORECAST AT THIS TIME.

WHAT IS MORE CERTAIN IS THAT STRONG TO DAMAGING WINDS WILL OCCUR

WITH THIS STORM FROM LATE TONIGHT INTO SUNDAY. WITH AN EXPECTATION

OF SUSTAINED WINDS OF 40 MPH FOR AT LEAST AN HOUR AND/OR GUSTS TO

AT LEAST 60 MPH FROM MIDNIGHT TONIGHT TO 2 PM SUNDAY FOR

NYC/NASSAU COUNTY AND PORTIONS OF NE NJ...THIS IS IN ADDITION TO

THE EXPECTATION OF SIMILAR WINDS IN THE BLIZZARD WARNING AREA. IN

THE AREA UNDER THE WINTER STORM WARNING...AND THE REMAINDER OF THE

CWA NOT UNDER THE HIGH WIND WARNING/BLIZZARD WARNING EXPECT

SUSTAINED WINDS OF 20-35MPH AND GUSTS OF 50-55 MPH. HAVE THUS

CONTINUED TO REFLECT THIS IN THE WINTER STORM WARNING/WIND

ADVISORY PRODUCT AS APPLICABLE. IN ADDITION TO CAUSING BLOWING

SNOW AND REDUCING VISIBILITIES...THESE WINDS WILL LIKELY BRING

DOWN BRANCHES AND POWER LINES...AND POSSIBLY SOME TREES AS WELL IN

THE HIGH WIND WARNING/BLIZZARD WARNING AREAS. THIS WILL ADD POWER

OUTAGES AND BLOCKED ROADWAYS TO THE HAZARDS IMPACTING THE

AREA...BEYOND THE SNOW ITSELF.

TEMPERATURES WILL FALL INTO THE TEENS TONIGHT...AND RISE ONLY A

FEW DEGREES ON SUNDAY. AS THE WINDS INCREASE LATE TONIGHT...WIND

CHILLS WILL FALL OF TO FROM AROUND ZERO TO 10 BELOW...AND REMAIN

NEAR THESE LEVELS THROUGH MOST OF THE DAY ON SUNDAY.

-- End Changed Discussion --

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2z RAP hardly a thing of beauty...but it is an improvement over the 0z & 1z runs...and does bring some snows up over the Island overnight.  

 

3z RAP looks worse than the 2z RAP; I think that wraps it up. 

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Models to trust under 48 hours: RGEM RAP HRRR. All did well today, we just didn't wanna believe them. Closet global model was GGEM. GFS made a big big loss. This storm is basically over in an hour or two. Onto Tuesday into Wednesday

I don't understand why people are basically saying to write off this storm and move on when we have a major wind event on our doorsteps.
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