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The NYC Banter Thread


Rib

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Absolutely. Thundersnow is definitely on the table with the level of dynamics we're talking about.

f39.gif

That's some of what's depicted as falling in the upper right image. If you look on the NCEP site at the H7 (700mb) level:

nam_700_036m.gif

look at the tightly packed red lines under the closed contour of the H7 low (over NE MD, NJ, SE PA)--that is omega, which is defined as "A term used to describe vertical motion in the atmosphere. The "omega equation" used in numerical weather models is composed of two terms, the "differential vorticity advection" term and the "thickness advection" term. Put more simply, omega is determined by the amount of spin (or large scale rotation) and warm (or cold) advection present in the atmosphere. On a weather forecast chart, high values of omega (or a strong omega field) relate to upward vertical motion (UVV) in the atmosphere. If this upward vertical motion is strong enough and in a sufficiently moist airmass, precipitation results."

This means that the air in these "high omega" areas is rapidly rising, and that convective potential is there. With a bombing low and being in the CCB, I would definitely think that convection and thunder is definitely possible under this deformation band, whereever it sets up.

Wow That deformation zone is right over top of wher I live in Swedesboro NJ (glouc county) :thumbsup:

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Wxsim forecast program off of the 18z runs of the GFS/NAM

Ligth snow by 130 pm temp 33.3

Mod snow by 3pm temp 32.0 (Snow by rush hour 1-2")

Heavy Snow by 530pm temp at 30.3

Heavy Snow thru around midnight

Total Snowfall 10" to 12"

Total snow on the ground Thursday AM - 15 to 17"

Current forecast has 2" more of snow early Saturday PM

The winter that keeps giving....won't stop!

I will actually miss this one as I am on a flight tomorrow AM to Ft. Lauderdale for business...I will of course be tracking etc. But I have a trained protege for snow measurements (My wife)

Sounds like a real nice storm. Brings back memories of Jan 1987, received 12" in that one and witnessed lightning and several hours of heavy snow

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