Subj : MESO: Mesoscale Discussion 0078
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Sat Feb 08 2025 23:24:43

ACUS11 KWNS 082324
SWOMCD
SPC MCD 082324=20
NYZ000-CTZ000-NJZ000-PAZ000-DEZ000-MDZ000-090330-

Mesoscale Discussion 0078
NWS Storm Prediction Center Norman OK
0524 PM CST Sat Feb 08 2025

Areas affected...far northern portions of the Mid-Atlantic and far
southern portions of New England

Concerning...Winter mixed precipitation=20

Valid 082324Z - 090330Z

SUMMARY...Snow should overspread the region in the next few hours.
With time, the snow should transition to sleet and even freezing
rain before ending later this evening/overnight.

DISCUSSION...An area of mixed winter precipitation continues across
western and central Pennsylvania this evening. This precipitation
area developed/is being maintained on the nose of strong low-level
warm-air advection across a deep layer. Over the next few hours this
warm-air advection and associated isentropic ascent will overspread
eastern Pennsylvania and much of New Jersey. Surface temperatures in
the upper-20Fs and low-30Fs, coupled with dewpoint temperatures in
the upper-teens and low-20Fs, yield wet-bulb temperatures below 32F.
Thermal profiles across the region will initially support all snow.
However, as the warm-air advection warms the low-levels, the maximum
temperature in the column should increase above 32F yielding sleet
and potentially eventually freezing rain before precipitation ends
from southwest to northeast.

...Marsh.. 02/08/2025

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!9vNBJ74_14ovHOJKNBlCLn0PKPhgT_DKo-7H-8W8jqK1e9-Kbpk6LDlicKGzfFcABuBFjCbvm=
GRftCqYKC47lGyvq-c$  for graphic product...

ATTN...WFO...OKX...PHI...BGM...CTP...LWX...

LAT...LON   39177553 39527647 40417671 41247631 41547565 41477463
            41017363 39987304 39137378 38907485 39177553=20


=3D =3D =3D
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