Subj : MESO: Mesoscale Discussion 0548
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Mon Apr 17 2023 03:46:13

ACUS11 KWNS 170346
SWOMCD
SPC MCD 170345=20
MIZ000-WIZ000-170945-

Mesoscale Discussion 0548
NWS Storm Prediction Center Norman OK
1045 PM CDT Sun Apr 16 2023

Areas affected...portions of western and central Wisconsin into far
western Upper Michigan

Concerning...Heavy snow=20

Valid 170345Z - 170945Z

SUMMARY...Heavy snow is expected to increase through the night
across portions of western Wisconsin and Upper Michigan. 1-2
inch/hour snowfall rates are possible, especially in the 05-09Z
(12-4 AM CDT) time frame.

DISCUSSION...Mainly moderate snowfall rates have been observed
across portions of western WI over the past several hours as an 850
mb low meanders over the western Great Lakes. The 850 mb low is
expected to intensify just after Midnight CDT, resulting in
increased frontogenesis, which could increase ascent within a
near-saturated -12 to -17C dendritic growth zone. The latest
high-resolution model guidance depicts the enhanced frontogenesis
and associated heavy snow within a primary band across western
Wisconsin into extreme northern Michigan. Timing for the heaviest
snow (i.e. 1-2 inch/hr rates) appears to be 05-09Z.

...Squitieri.. 04/17/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!8V-a63SdbTFoBB8_-wvFWT_nJPP-ANJUQWtqPlNLoZc-r4aAAERe9Pmyig54Zf2pq_tx0jjmZ=
i2Ukk6o3QGz_GPJhn4$  for graphic product...

ATTN...WFO...MQT...GRB...DLH...ARX...MPX...

LAT...LON   43759031 43719043 43699088 43769115 44019142 44469166
            45079154 45919127 46359097 46689044 46808992 46788944
            46588919 46298907 45778931 45188971 44618987 44138999
            43759031=20


=3D =3D =3D
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