Subj : MESO: Mesoscale Discussion 0265
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Fri Mar 10 2023 18:43:53

ACUS11 KWNS 101843
SWOMCD
SPC MCD 101843=20
NYZ000-102145-

Mesoscale Discussion 0265
NWS Storm Prediction Center Norman OK
1243 PM CST Fri Mar 10 2023

Areas affected...portions of far western New York

Concerning...Heavy snow=20

Valid 101843Z - 102145Z

SUMMARY...Brief periods of heavy snow, including 1 inch/hour rates,
are possible over the next few hours in association with a broader
precipitation band.

DISCUSSION...Strong low-level warm-air/moisture advection is taking
place ahead and to the north of a surface low, currently positioned
over western Pennsylvania, which is poised to move east through the
afternoon. A band of heavy snow is already underway across far
western New York per latest surface observations. 850 mb
frontogenesis is evident along the Lake Erie/Ontario shorelines and
is serving as a source of convergence. As such, the enhanced lift of
relatively rich low-level moisture into an already saturated
dendritic growth zone should continue to support additional bouts of
heavy snow (1 inch/hour) for at least a few more hours across
western New York, as also suggested by 12Z HREF and the last few
runs of the HRRR.

...Squitieri.. 03/10/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!-wDRClwOEaXAKjXRkdy4M_tTP8PiPg1StfUClVlkWK07C0ofgGrX8p3mHU2T3I0Rd_pnz-JyR=
nmNRfwGZFJlCyleY-c$  for graphic product...

ATTN...WFO...BGM...BUF...

LAT...LON   42517933 43167892 43427791 43497672 43107623 42787624
            42497680 42277729 42167777 42207819 42517933=20


=3D =3D =3D
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