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Central PA/fringes of MD - December 2013 continued


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Interesting forecast discussion update from State College:

 

-- Changed Discussion --

CONDITIONS CONTINUE TO SET UP FOR A CLASSIC CENTRAL PA SNOW STORM
ON SATURDAY.

A STORM SYSTEM COMING OUT OF THE PANHANDLE AREA OF TEXAS WILL
MOVE TOWARD KY BY MID DAY SATURDAY BEFORE REDEVELOPING AND
BEGINNING TO BOMB AWAY ALONG THE MID ATLANTIC COAST. NEW NAM
SHOWS RAPID DEVELOPMENT OF INTENSE WARM ADVECTION AND UPWARD
VERTICAL MOTION FROM LATE MORNING THROUGH THE AFTERNOON HOURS
WHERE SNOWFALL RATES COULD EXCEED 2 INCHES PER HOUR FOR A TIME.
THE RAPID INTENSIFICATION OF THE LOW DRAWS A TONGUE OF MOIST
UNSTABLE AIR UP ALONG THE COASTAL PLANE WHERE STABILITY IS FCST TO
ERODE SIGNIFICANTLY...POSSIBLY BRINGING THAT RAREST OF WINTER
WONDERS...THUNDER SNOW. THE BEST PLACE FOR CONVECTION WILL BE OVER
FAR SERN PA INTO NJ


I TOYED WITH SNOWFALL GRAPHICS A BIT MAINLY OVER SERN AREAS WHERE
THE WARM AIR ALOFT SHOULD LIMIT SNOWFALL AMOUNTS A BIT...BUT EVEN
THERE SIGNIFICANT SNOW IS LIKLEY. IN GENERAL WE LOOK GOOD FOR A
WIDESPREAD 4-8 INCH SNOW WITH SOME HIGHER AMOUNTS POSSIBLE OVER
CENTRAL AND NORTHERN PA WHERE SNOW SHUD BE FLUFFIER.

PRECIP SHUD WIND DOWN RAPIDLY SAT EVENING AND BE OVER IN ALL BUT
NERN AREAS BY MIDNIGHT AS THE LOW REACHES OUR LATITUDE. NEW NAM
SHOWS SFC PRESSURE FALLS OF 25MB/6HR AS THE STORM MOVES UP INTO
THE GULF OF MAINE. BOMBOGENESIS!

-- End Changed Discussion --

 

 

 

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If the Canadian were to be realized that would be on heck of a storm for the LSV.  Would not be surprised to see double digit snow accumulations.  

 

The RGEM has been doing stellar this year. It was the only model that said a non event on Tuesday.

 

Look what it has now.  20MM+ that's .8"+ qpf

 

 

SN_000-048_0000.gif

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If the Canadian were to be realized that would be on heck of a storm for the LSV. Would not be surprised to see double digit snow accumulations.

Its plausible, but who knows? Last week I expected 2 inches on Sunday and had 7 in 3 hours. If there is that much instability etc who knows where the bands will set up. Many wild cards here.

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GFS looks a tad warmer than the NAM. Tomorrow night looks interesting on the NAM AND GFS for someone to get a lot of heavy snow in a very short period of time. Will that be along the Mason-Dixon Line? The pa turnpike? 422? 78? I just watched Cantores Harrisburg thunder snow to put me in the mood...

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GFS looks a tad warmer than the NAM. Tomorrow night looks interesting on the NAM AND GFS for someone to get a lot of heavy snow in a very short period of time. Will that be along the Mason-Dixon Line? The pa turnpike? 422? 78? I just watched Cantores Harrisburg thunder snow to put me in the mood...

 

If anyone from the weather channel would ever come around here, i'd go shoo them away with a broom. 

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