ZCZC SPCSWOMCD ALL
ACUS11 KWNS 120523 
SPC MCD 120523 
VTZ000-NYZ000-120930-

Mesoscale Discussion 1879
NWS Storm Prediction Center Norman OK
1123 PM CST Sun Dec 11 2016

Areas affected...Portions of Upstate New York

Concerning...Heavy snow 

Valid 120523Z - 120930Z

SUMMARY...A band of moderate to occasionally heavy snow will
organize across portions of Upstate New York overnight, with local
snowfall rates upwards of one inch per hour.

DISCUSSION...As a southwesterly low-level jet strengthens over
central/eastern New York tonight, increasing isentropic ascent will
spread moderate snowfall eastward across the state. Guidance is
relatively consistent in suggesting an enhanced band of heavier snow
(within the broader shield of snowfall) organizing near the Mohawk
Valley during the early morning hours. Surface observations
illustrate a subtle trough within this region, perhaps indicative of
a corridor of enhanced warm-air advection and related ascent, which
would support higher snowfall rates (upwards of one inch per hour).
Towards 07-09Z, this band of moderate to locally heavy snowfall will
expand eastward towards the Hudson Valley.

..Picca/Cohen.. 12/12/2016

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...BTV...ALY...BGM...BUF...

LAT...LON   43627639 43227685 42757659 42717642 42567346 42767325
            43657333 43807347 43937377 44077503 44007603 43627639 

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