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Dec 8th - 9th (2nd wave/winter storm discussion)


Zelocita Weather

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The GEM And NAM Both indicate precipitation reaching roughly the NYC or I 78 corridor by 00-02Z Sunday evening...the GFS continues to say it won't happen til 08z. 

Do you think the precip is going to come in earlier than modeled? If that happens, there will be more wintry weather.

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Forecast high for the KSWF area is 49. Current temp is 41.7. Upton's AFD mentions temps will hold steady and fall off later this afternoon. Temps. might bust on the low side today.

 

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW YORK NY
1200 PM EST FRI DEC 6 2013

.SYNOPSIS...
LOW PRESSURE MOVES EAST ALONG A STALLED FRONT TO OUR SOUTH
OVERNIGHT. COLD HIGH PRESSURE BUILDING IN FOR THE WEEKEND. LOW
PRESSURE APPROACHES SUNDAY NIGHT AND IMPACTS THE NORTHEAST
THROUGH THE FIRST HALF OF NEXT WEEK WITH HIGH PRESSURE BUILDING IN
FOR THE SECOND HALF.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
THE GOES WATER VAPOR IMAGERY TELLS THE PICTURE WITH A RIVER OF
MOISTURE FROM THE CENTRAL PACIFIC TO NEWFOUNDLAND.

SFC COLD FRONT SEEN ON RADAR AND IN THE OBS APPROACHING OCEAN CITY
AS OF 1630Z. LATEST HRRR AND RADAR CONTINUES TO SUPPORTS LIGHT RA
ENDING FOR A BRIEF PERIOD EARLY THIS AFTERNOON FROM WEST TO EAST
THEN REDEVELOPING THIS AFTERNOON AS WAVE OF WEAK LOW PRESSURE
RIDE ALONG THE FRONT.

TEMPS STEADY UNTIL 3-4 PM...THEN START A SLOW FALL IN THE COLD
ADVECTION.

&&

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Forecast high for the KSWF area is 49. Current temp is 41.7. Upton's AFD mentions temps will hold steady and fall off later this afternoon. Temps. might bust on the low side today.

 

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE NEW YORK NY

1200 PM EST FRI DEC 6 2013

.SYNOPSIS...

LOW PRESSURE MOVES EAST ALONG A STALLED FRONT TO OUR SOUTH

OVERNIGHT. COLD HIGH PRESSURE BUILDING IN FOR THE WEEKEND. LOW

PRESSURE APPROACHES SUNDAY NIGHT AND IMPACTS THE NORTHEAST

THROUGH THE FIRST HALF OF NEXT WEEK WITH HIGH PRESSURE BUILDING IN

FOR THE SECOND HALF.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...

THE GOES WATER VAPOR IMAGERY TELLS THE PICTURE WITH A RIVER OF

MOISTURE FROM THE CENTRAL PACIFIC TO NEWFOUNDLAND.

SFC COLD FRONT SEEN ON RADAR AND IN THE OBS APPROACHING OCEAN CITY

AS OF 1630Z. LATEST HRRR AND RADAR CONTINUES TO SUPPORTS LIGHT RA

ENDING FOR A BRIEF PERIOD EARLY THIS AFTERNOON FROM WEST TO EAST

THEN REDEVELOPING THIS AFTERNOON AS WAVE OF WEAK LOW PRESSURE

RIDE ALONG THE FRONT.

TEMPS STEADY UNTIL 3-4 PM...THEN START A SLOW FALL IN THE COLD

ADVECTION.

&&

highs occured in the early monrning hours everywhere

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Agreed... Latest GGEM shows a light snow event followed by quick overrunning rain...unless ur far north or west

 

The GGEM had some winter precip but it was more in the form of ip/zr for our region... Both 12z GFS & NAM show a healthy amount of snow for our region tonight..  Would not be surprised to see some 6" amounts pop up in the county..

 

Starting to look like the GFS had the right idea all along for the 2nd wave..

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The GGEM had some winter precip but it was more in the form of ip/zr for our region... Both 12z GFS & NAM show a healthy amount of snow for our region tonight.. Would not be surprised to see some 6" amounts pop up in the county..

Starting to look like the GFS had the right idea all along for the 2nd wave..

Yea I had been saying I think tonight's event was being downplayed for Orange County and areas north and west.. However It seems like Sundays wave will be a messy light mix.. Quick moving too

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Sunday into Monday 

 

12 Z ECM Data and Summary 

HR 60 Light precipitation across central and southern PA not yet in E C PA ..540 line goes thru central Pa in a west to east type fashion

Hr 66 Light QPF all of PA and NJ 540 line up in N PA 546 + thickness NW burbs of PHL 

Alright this run is once again coming in wetter indicating that last night was a hiccup run 

Hr 72 540 line in SC NY Thicknesses elsewhere are 546-552 .. Heavy QPF is South central PA into southeast PA into Central NJ and south . light to moderate in East Central PA and light in NE PA 

Hr 78 L Pressure tucked S of LI and light QPF across the area . Thicknesses same as prior

Heavy QPF never gets into NY state or NE PA it is all verbatim light QPF 

Temperatures 

Hr 60 twenties everywhere except along the coast in Jersey low to mid 30s

Hr 66 20s everywhere but SE PA lower 30s and NJ is in the 30s to southern lower 40s 
Hr 72 20s in NE PA east central PA mid 30s ..SE Pa Mid 30s and in Jersey from about central south it is in the 40s 

Hr 78 Everyone is above freezing with mid 30s in NE PA East central and SE PA upper 30s to lower 40s ..LI and central NJ south in the 40s

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North and west people might want to keep an eye on the Upstate NY and PA thread tonight. The models have gotten colder with time on the wave tonight and if the snow really makes it down well into central PA, that's a very good sign for NW NJ/SE NY/Hudson Valley to have maybe some decent accumulating snow.

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North and west people might want to keep an eye on the Upstate NY and PA thread tonight. The models have gotten colder with time on the wave tonight and if the snow really makes it down well into central PA, that's a very good sign for NW NJ/SE NY/Hudson Valley to have maybe some decent accumulating snow.

It has been colder than forecasted all day here in the great NW... Wish the flakes weren't overnight!

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